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ASUS B850M MAX GAMING WIFI vs ASUS PRIME B850-PLUS WIFI

Real specs. Clear sources.Exact models · UK & US buying links

Compared products

YOUR FIRST CHOICE

ASUS B850M MAX GAMING WIFI

B850M MAX GAMING WIFI · AM5 · Micro-ATX · ASUS UK specification

Full product profile Official image

Exact model & source notes

A micro-ATX AM5 motherboard with AMD B850: four DDR5 slots rated up to DDR5-8000+ (OC), a PCIe 5.0 x16 slot plus three x1-mode slots, three M.2 slots (one PCIe 5.0 x4), four SATA ports, Realtek 1 Gb Ethernet and Wi-Fi 6.

Specifications checked 27 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

WHICH SUITS YOU?

Choose the B850M MAX GAMING WIFI for

A Micro-ATX board

Choose the PRIME B850-PLUS WIFI for

An ATX board

Built from verified specifications that differ. Not a rating or a recommendation.

See the 8 verified differences

THE CONTENDER

ASUS PRIME B850-PLUS WIFI

PRIME B850-PLUS WIFI · AM5 · ATX · ASUS US specification

Full product profile Official image

Exact model & source notes

An ATX AM5 motherboard with AMD B850: four DDR5 slots rated up to DDR5-8000+ (OC), a PCIe 5.0 x16 graphics slot plus three chipset slots, three M.2 slots (one PCIe 5.0 x4), Realtek 2.5 Gb Ethernet and Wi-Fi 6E.

Specifications checked 27 Sept 2026.

Amazon links open search results. Check the exact variant, current price and availability with the retailer.

Manufacturer specifications

B850M MAX GAMING WIFI UK & US retailers

UK & US price history: no verified listing yet

PRIME B850-PLUS WIFI UK & US retailers

UK & US price history: no verified listing yet

Search links open retailer results, not a matched listing; eBay listings are checked daily. As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, we may be compensated if you make a purchase.

THE DIFFERENCES, MADE VISIBLE

Visual facts

Differences first. Select a topic for its graphic, sources and conditions.

How to read this comparison

Manufacturer facts for the exact models shown. Not a quality rating or a test result.
“Different” means the known values differ, not that one is better.
Missing or conflicting evidence is marked and never counts as a difference. Source chips hold each fact’s sources and conditions.

SPECIFICATIONS SIDE BY SIDE8 topics

SELECTED TOPIC

01 / 08

Form factor

Check the exact configuration and source conditions for your use.

ASUS B850M MAX GAMING WIFIMicro-ATX; 244 × 244 mm

Manufacturer specification · Check case mounting positions and connector clearance.

Source 1

ASUS PRIME B850-PLUS WIFIATX; 305 × 244 mm

Manufacturer specification · Check case mounting positions and connector clearance.

Source 1

Explore the full specifications

Plan the complete platform. Check the exact CPU-support list, required BIOS and memory validation before buying. PCIe generations and lane allocations can change with the processor. A socket match or slot count is not a guarantee that every component works together at its highest advertised setting.

WHAT CHANGES BETWEEN THEM?

Key differences

Full specifications ↓

8 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. Missing information stays separate.

Form factor

In Visual facts

ASUS B850M MAX GAMING WIFIMicro-ATX; 244 × 244 mm

ASUS PRIME B850-PLUS WIFIATX; 305 × 244 mm

Sources

ASUS B850M MAX GAMING WIFI

Manufacturer specification · Check case mounting positions and connector clearance.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · Check case mounting positions and connector clearance.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Check the exact configuration and source conditions for your use.

Expansion slots and electrical links

In Visual facts

ASUS B850M MAX GAMING WIFI1 × PCIe 5.0 x16; 3 × PCIe 4.0 x16-length (x1 mode)

ASUS PRIME B850-PLUS WIFI1 × PCIe 5.0 x16; 1 × PCIe 4.0 x16 (x4 mode); 2 × PCIe 3.0 x16 (x1 mode)

Sources

ASUS B850M MAX GAMING WIFI

ASUS lists all four slots under the Ryzen processor headings. · Manufacturer specification · With Ryzen 8000 the first slot runs PCIe 4.0 x8/x4. The three other slots are x16-length but run in x1 mode. See ASUS's PCIe bifurcation table.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

The PCIe 5.0 x16 slot is listed under the Ryzen processor; the other three under the B850 chipset. · Manufacturer specification · With Ryzen 8000 the first slot runs PCIe 4.0 x8/x4. Using either PCIe 3.0 slot disables SATA6G_1/2. See ASUS's PCIe bifurcation table.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Check the exact configuration and source conditions for your use.

Network interfaces

In Visual facts

ASUS B850M MAX GAMING WIFIRealtek 1 Gb Ethernet; Wi-Fi 6 (1x1); Bluetooth 5.4

ASUS PRIME B850-PLUS WIFIRealtek 2.5 Gb Ethernet; Wi-Fi 6E; Bluetooth 5.3

Sources

ASUS B850M MAX GAMING WIFI

Manufacturer specification · Wi-Fi 6 on 2.4/5 GHz only (no 6 GHz band). Bluetooth versions may vary by module.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · ASUS says the Wi-Fi 6E 6 GHz band is supported only in Windows 11 or later and depends on local regulations; Bluetooth versions may vary by module.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Check the exact configuration and source conditions for your use.

Listed Bluetooth version

In Visual facts

ASUS B850M MAX GAMING WIFI5.4

ASUS PRIME B850-PLUS WIFI5.3

Sources

ASUS B850M MAX GAMING WIFI

Manufacturer specification · The manufacturer notes that the Bluetooth version can depend on the installed wireless module.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · The manufacturer notes that the Bluetooth version can depend on the installed wireless module.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Check the exact configuration and source conditions for your use.

Wired Ethernet

In Visual facts

ASUS B850M MAX GAMING WIFIRealtek 1 Gb Ethernet

ASUS PRIME B850-PLUS WIFIRealtek 2.5 Gb Ethernet

Sources

ASUS B850M MAX GAMING WIFI

Manufacturer specification · Link-rate capability; real throughput depends on the connected network, cabling and workload. ASUS also lists LANGuard.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · Link-rate capability; real throughput depends on the connected network, cabling and workload. ASUS also lists ASUS LANGuard.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Check the exact configuration and source conditions for your use.

Internal USB connections

In Visual facts

ASUS B850M MAX GAMING WIFI1 × USB 5 Gb/s (Type-C); 4 × USB 5 Gb/s (2 headers); 4 × USB 2.0 (2 headers)

ASUS PRIME B850-PLUS WIFI1 × USB 5 Gb/s (Type-C); 2 × USB 5 Gb/s (1 header); 6 × USB 2.0 (3 headers)

Sources

ASUS B850M MAX GAMING WIFI

Manufacturer specification · Internal headers need compatible case ports or accessories. ASUS lists USB Type-C power delivery output of max. 5 V/3 A.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · Internal headers need compatible case ports or accessories. ASUS lists USB Type-C power delivery output of max. 5 V/3 A.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Check the exact configuration and source conditions for your use.

Show 2 more verified differences

Rear connections

In Visual facts

ASUS B850M MAX GAMING WIFI2 × USB 10 Gb/s (1 Type-A + 1 Type-C); 2 × USB 5 Gb/s (Type-A); 5 × USB 2.0 (Type-A); 1 × DisplayPort; 1 × HDMI; Wi-Fi module; 1 × Realtek 1 Gb Ethernet; 3 × audio jacks; BIOS FlashBack button

ASUS PRIME B850-PLUS WIFI4 × USB 10 Gb/s (3 Type-A + 1 Type-C); 2 × USB 5 Gb/s (Type-A); 2 × USB 2.0 (Type-A); 1 × DisplayPort; 1 × HDMI; Wi-Fi module; 1 × Realtek 2.5 Gb Ethernet; 3 × audio jacks; BIOS FlashBack button

Sources

ASUS B850M MAX GAMING WIFI

Manufacturer specification · Connector count and listed modes describe the rear panel. Display output depends on the CPU's integrated graphics.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · Connector count and listed modes describe the rear panel. Display output depends on the CPU's integrated graphics.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Check the exact configuration and source conditions for your use.

M.2 drive installation aids

ASUS B850M MAX GAMING WIFIM.2 screw packages (2)

ASUS PRIME B850-PLUS WIFIM.2 screw packages (3)

Sources

ASUS B850M MAX GAMING WIFI

Manufacturer specification · ASUS lists two screw packages for M.2 SSDs and no tool-free M.2 latch or M.2 heatsink for this board.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · ASUS lists three screw packages for M.2 SSDs and a flexible M.2 heatsink, and no tool-free M.2 latch for this board.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Check the exact configuration and source conditions for your use.

Configuration & compatibility details (1)

Specification market

ASUS B850M MAX GAMING WIFIASUS UK documentation

ASUS PRIME B850-PLUS WIFIASUS US documentation

Sources

ASUS B850M MAX GAMING WIFI

Manufacturer specification · UK and US buying links are searches, not proof of stock, identical regional wireless modules, bundles or warranty. Confirm the exact model and part identifier with the retailer.

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · The ASUS UK product page lists the same model; its UK specification page returned no specification text to a plain request on 27 September 2026. UK and US buying links are searches, not proof of stock, identical regional wireless modules, bundles or warranty.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

These descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.

Missing or non-comparable evidence (5)

Rear Clear CMOS button

ASUS B850M MAX GAMING WIFINot verified

ASUS PRIME B850-PLUS WIFINot verified

Sources

ASUS B850M MAX GAMING WIFI

ASUS's complete back-panel list has no Clear CMOS button; it lists an internal Clear CMOS header instead. Omission is recorded as unconfirmed rather than a sourced absence. · Manufacturer specification

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Expansion/storage lane sharing

ASUS B850M MAX GAMING WIFINot verified

ASUS PRIME B850-PLUS WIFISATA6G_1/2 are disabled when PCIEX16(G3)_1 or PCIEX16(G3)_2 is in use

Sources

ASUS B850M MAX GAMING WIFI

No source recorded for this side.

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · Read the simultaneous-use restriction rather than assuming all four SATA ports stay available with every slot populated.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

NVMe RAID modes

ASUS B850M MAX GAMING WIFINot verified

ASUS PRIME B850-PLUS WIFINot verified

Sources

ASUS B850M MAX GAMING WIFI

ASUS lists AMD RAIDXpert2 levels per CPU family (Ryzen 9000: 0/1/5/10; 8000: 0/1; 7000: 0/1/10) without stating which apply to NVMe versus SATA devices. · Manufacturer specification

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

ASUS lists AMD RAIDXpert2 levels per CPU family (Ryzen 9000: 0/1/5/10; 8000: 0/1; 7000: 0/1/10) without stating which apply to NVMe versus SATA devices. · Manufacturer specification

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

SATA RAID modes

ASUS B850M MAX GAMING WIFINot verified

ASUS PRIME B850-PLUS WIFINot verified

Sources

ASUS B850M MAX GAMING WIFI

ASUS lists AMD RAIDXpert2 levels per CPU family (Ryzen 9000: 0/1/5/10; 8000: 0/1; 7000: 0/1/10) without stating which apply to SATA versus NVMe devices. · Manufacturer specification

ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)

ASUS PRIME B850-PLUS WIFI

ASUS lists AMD RAIDXpert2 levels per CPU family (Ryzen 9000: 0/1/5/10; 8000: 0/1; 7000: 0/1/10) without stating which apply to SATA versus NVMe devices. · Manufacturer specification

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Thunderbolt (USB4) add-in card header

ASUS B850M MAX GAMING WIFINot verified

ASUS PRIME B850-PLUS WIFIYes

Sources

ASUS B850M MAX GAMING WIFI

No source recorded for this side.

ASUS PRIME B850-PLUS WIFI

Manufacturer specification · A header for a compatible Thunderbolt/USB4 add-in card; no USB4 port is built into the rear panel.

ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)

Evidence is missing or conflicting on at least one side. This is not a verified difference.

22 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

ASUS B850M MAX GAMING WIFI

What it brings

A PCIe 5.0 x16 graphics slot and a PCIe 5.0 x4 M.2 slot, with three further x16-length slots running at x1 and four SATA ports.
Manufacturer source
Rear DisplayPort and HDMI outputs, a rear 10 Gb/s USB-C port, a BIOS FlashBack button and an SPI TPM header.
Manufacturer source
Accepts ECC as well as non-ECC unbuffered DDR5 up to 8000+ MT/s (OC), supports CPUs up to 170 W, and ASUS lists Windows 10 64-bit as well as Windows 11.
Manufacturer source

What to check

Networking is 1 Gb Ethernet and 1x1 Wi-Fi 6 on 2.4/5 GHz only, rather than 2.5 Gb or faster wired and Wi-Fi 6E/7.
Manufacturer source
Five of the nine rear USB ports are USB 2.0, the third M.2 slot is PCIe 4.0 x2, and there is no M.2 heatsink, USB4 or rear Clear CMOS button listed.
Manufacturer source

ASUS PRIME B850-PLUS WIFI

What it brings

Four expansion slots (PCIe 5.0 x16, PCIe 4.0 x4-mode and two PCIe 3.0 x1-mode) and a PCIe 5.0 x4 M.2 slot among three M.2 slots.
Manufacturer source
Rear DisplayPort and HDMI outputs, four 10 Gb/s USB ports including a USB-C, a BIOS FlashBack button, and Thunderbolt (USB4) and SPI TPM headers.
Manufacturer source
Accepts ECC as well as non-ECC unbuffered DDR5 up to 8000+ MT/s (OC), supports CPUs up to 170 W, and ASUS lists Windows 10 64-bit as well as Windows 11.
Manufacturer source

What to check

Using either PCIe 3.0 slot disables two of the four SATA ports, and the chipset M.2_3 slot is limited to PCIe 4.0 x2.
Manufacturer source
Wi-Fi 6E and Bluetooth 5.3 rather than Wi-Fi 7, eight rear USB ports with no USB4, a back-panel list with no Clear CMOS button (ASUS lists an internal Clear CMOS header), and an unnamed Realtek audio codec.
Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

36 of 36 specifications Sources in each row

Source-backed specifications for ASUS B850M MAX GAMING WIFI and ASUS PRIME B850-PLUS WIFI
Specification	ASUS B850M MAX GAMING WIFI	ASUS PRIME B850-PLUS WIFI

CPU socket Sources ASUS B850M MAX GAMING WIFI Manufacturer specification ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	AM5	AM5
Chipset Sources ASUS B850M MAX GAMING WIFI Manufacturer specification ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	AMD B850	AMD B850
Form factorDifferent Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Check case mounting positions and connector clearance. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Check case mounting positions and connector clearance. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Micro-ATX; 244 × 244 mm	ATX; 305 × 244 mm
CPU support / BIOS source Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · ASUS lists support for CPUs up to 170 W. Check ASUS's exact CPU support list and its required BIOS; family support does not confirm the firmware installed on a retail board. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · ASUS lists support for CPUs up to 170 W. Check ASUS's exact CPU support list and its required BIOS; family support does not confirm the firmware installed on a retail board. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	AMD Ryzen 9000 / 8000 / 7000 Series	AMD Ryzen 9000 / 8000 / 7000 Series
Firmware storage Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Flash-ROM capacity does not identify the BIOS version installed on a retail board. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Flash-ROM capacity does not identify the BIOS version installed on a retail board. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	256 Mb Flash ROM, UEFI AMI BIOS	256 Mb Flash ROM, UEFI AMI BIOS
Listed operating systems Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Individual features and drivers can have newer operating-system requirements. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Individual features and drivers can have newer operating-system requirements; ASUS limits Wi-Fi 6E 6 GHz operation to Windows 11 or later. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Windows 11; Windows 10 64-bit	Windows 11; Windows 10 64-bit
Rear Flash BIOS button Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · ASUS BIOS FlashBack button. Use the exact model firmware and follow ASUS's BIOS FlashBack instructions. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · ASUS BIOS FlashBack button. Use the exact model firmware and follow ASUS's BIOS FlashBack instructions. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Yes	Yes
Advertised voltage regulation Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · ASUS does not publish per-stage current ratings for this board on the checked pages. Not a measured VRM temperature or overclocking result. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK)ASUS B850M MAX GAMING WIFI — exact-model product and gallery (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · ASUS does not publish per-stage current ratings for this board on the checked pages. Not a measured VRM temperature or overclocking result. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)ASUS PRIME B850-PLUS WIFI — exact-model product and gallery (ASUS UK)	8 + 2 + 1 phase digital power design (DIGI+ VRM)	8 + 2 + 1 phase digital power design (DIGI+ VRM)

Memory type, slots and limit Sources ASUS B850M MAX GAMING WIFI ASUS lists up to 8000+ MT/s (OC) with Ryzen 9000, 8000 and 7000 processors and AEMP. · Manufacturer specification · Supported capacity, module population and profile speeds depend on the exact CPU, installed BIOS and validated memory kit. Profile support does not guarantee an overclock. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI ASUS lists up to 8000+ MT/s (OC) with Ryzen 9000, 8000 and 7000 processors and AEMP. · Manufacturer specification · Supported capacity, module population and profile speeds depend on the exact CPU, installed BIOS and validated memory kit. Profile support does not guarantee an overclock. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	4 DDR5 DIMM slots; dual channel; up to 256 GB; up to DDR5-8000+ (OC); AMD EXPO; ECC and non-ECC unbuffered	4 DDR5 DIMM slots; dual channel; up to 256 GB; up to DDR5-8000+ (OC); AMD EXPO; ECC and non-ECC unbuffered
Maximum listed memory Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Manufacturer capacity ceiling; check CPU support, BIOS and the validated DIMM population. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Manufacturer capacity ceiling; check CPU support, BIOS and the validated DIMM population. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	256 GB	256 GB
DIMM slots Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Physical DDR5 module positions; this count is not a guarantee of capacity or profile speed. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Physical DDR5 module positions; this count is not a guarantee of capacity or profile speed. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	4	4
Listed memory overclocking profiles Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · These are manufacturer-listed overclocking configurations, not guaranteed stock transfer rates or tested performance. CPU family and DIMM layout remain material. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · These are manufacturer-listed overclocking configurations, not guaranteed stock transfer rates or tested performance. CPU family and DIMM layout remain material. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Ryzen 9000, 8000, 7000: up to 8000+ MT/s (OC)	Ryzen 9000, 8000, 7000: up to 8000+ MT/s (OC)

Storage interfaces Sources ASUS B850M MAX GAMING WIFI M.2_1 (2280, PCIe 5.0 x4) is listed under the Ryzen processor; M.2_2 (PCIe 4.0 x4) and M.2_3 (PCIe 4.0 x2) under the B850 chipset, both accepting 2242/2260/2280. · Manufacturer specification · With Ryzen 8000, M.2_1 runs PCIe 4.0 x4. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI M.2_1 (PCIe 5.0 x4) and M.2_2 (PCIe 4.0 x4) are listed under the Ryzen processor and accept 2280 drives; M.2_3 (PCIe 4.0 x2) is listed under the B850 chipset and accepts 2242/2260/2280/22110. · Manufacturer specification · SATA6G_1/2 are disabled when either PCIe 3.0 x1-mode slot is in use. With Ryzen 8000, M.2_1 runs PCIe 4.0 x4 and M.2_2 PCIe 4.0 x4/x2. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	1 × M.2 PCIe 5.0 x4; 1 × M.2 PCIe 4.0 x4; 1 × M.2 PCIe 4.0 x2; 4 × SATA 6 Gb/s	1 × M.2 PCIe 5.0 x4; 1 × M.2 PCIe 4.0 x4; 1 × M.2 PCIe 4.0 x2; 4 × SATA 6 Gb/s
M.2 storage positions Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · M.2_3 is a PCIe 4.0 x2 slot. With Ryzen 8000 the CPU-attached M.2_1 runs PCIe 4.0 x4. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · M.2_3 is a PCIe 4.0 x2 slot. Ryzen 8000 processors change the CPU-attached M.2 links. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	3	3
SATA storage ports Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · SATA 6 Gb/s; check the source for lane sharing and drive power requirements. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · SATA 6 Gb/s. SATA6G_1/2 are disabled when either PCIEX16(G3) slot is in use. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	4	4
M.2 drive installation aidsDifferent Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · ASUS lists two screw packages for M.2 SSDs and no tool-free M.2 latch or M.2 heatsink for this board. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · ASUS lists three screw packages for M.2 SSDs and a flexible M.2 heatsink, and no tool-free M.2 latch for this board. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	M.2 screw packages (2)	M.2 screw packages (3)

Expansion slots and electrical linksDifferent Sources ASUS B850M MAX GAMING WIFI ASUS lists all four slots under the Ryzen processor headings. · Manufacturer specification · With Ryzen 8000 the first slot runs PCIe 4.0 x8/x4. The three other slots are x16-length but run in x1 mode. See ASUS's PCIe bifurcation table. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI The PCIe 5.0 x16 slot is listed under the Ryzen processor; the other three under the B850 chipset. · Manufacturer specification · With Ryzen 8000 the first slot runs PCIe 4.0 x8/x4. Using either PCIe 3.0 slot disables SATA6G_1/2. See ASUS's PCIe bifurcation table. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	1 × PCIe 5.0 x16; 3 × PCIe 4.0 x16-length (x1 mode)	1 × PCIe 5.0 x16; 1 × PCIe 4.0 x16 (x4 mode); 2 × PCIe 3.0 x16 (x1 mode)
Expansion/storage lane sharing Sources ASUS B850M MAX GAMING WIFI No source recorded. ASUS PRIME B850-PLUS WIFI Manufacturer specification · Read the simultaneous-use restriction rather than assuming all four SATA ports stay available with every slot populated. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Not provided	SATA6G_1/2 are disabled when PCIEX16(G3)_1 or PCIEX16(G3)_2 is in use

Rear connectionsDifferent Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Connector count and listed modes describe the rear panel. Display output depends on the CPU's integrated graphics. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Connector count and listed modes describe the rear panel. Display output depends on the CPU's integrated graphics. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	2 × USB 10 Gb/s (1 Type-A + 1 Type-C); 2 × USB 5 Gb/s (Type-A); 5 × USB 2.0 (Type-A); 1 × DisplayPort; 1 × HDMI; Wi-Fi module; 1 × Realtek 1 Gb Ethernet; 3 × audio jacks; BIOS FlashBack button	4 × USB 10 Gb/s (3 Type-A + 1 Type-C); 2 × USB 5 Gb/s (Type-A); 2 × USB 2.0 (Type-A); 1 × DisplayPort; 1 × HDMI; Wi-Fi module; 1 × Realtek 2.5 Gb Ethernet; 3 × audio jacks; BIOS FlashBack button
Internal USB connectionsDifferent Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Internal headers need compatible case ports or accessories. ASUS lists USB Type-C power delivery output of max. 5 V/3 A. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Internal headers need compatible case ports or accessories. ASUS lists USB Type-C power delivery output of max. 5 V/3 A. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	1 × USB 5 Gb/s (Type-C); 4 × USB 5 Gb/s (2 headers); 4 × USB 2.0 (2 headers)	1 × USB 5 Gb/s (Type-C); 2 × USB 5 Gb/s (1 header); 6 × USB 2.0 (3 headers)
Integrated-graphics display connections Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Requires a processor with integrated graphics; see AMD CPU specifications. Not measured display performance. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Requires a processor with integrated graphics; see AMD CPU specifications. Not measured display performance. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	DisplayPort 1.4: up to 8K 30 Hz; HDMI 2.1: 4K 60 Hz	DisplayPort 1.4: up to 8K 30 Hz; HDMI 2.1: 4K 60 Hz
Audio hardware Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · ASUS says 7.1 output needs a chassis HD audio front-panel module. A codec description is not an independent sound-quality measurement. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · ASUS says 7.1 output needs a chassis HD audio front-panel module. A codec description is not an independent sound-quality measurement. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Realtek 7.1-channel HD audio codec (model not stated); up to 24-bit/192 kHz playback	Realtek 7.1-channel HD audio codec (model not stated); up to 24-bit/192 kHz playback
Rear USB4 support Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · ASUS's complete rear USB list (9 ports) has no USB4 port; the fastest rear ports are USB 10 Gb/s. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · ASUS's complete rear USB list (8 ports) has no USB4 port. The board has a Thunderbolt (USB4) header for a compatible add-in card. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	No	No
Thunderbolt (USB4) add-in card header Sources ASUS B850M MAX GAMING WIFI No source recorded. ASUS PRIME B850-PLUS WIFI Manufacturer specification · A header for a compatible Thunderbolt/USB4 add-in card; no USB4 port is built into the rear panel. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Not provided	Yes

Network interfacesDifferent Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Wi-Fi 6 on 2.4/5 GHz only (no 6 GHz band). Bluetooth versions may vary by module. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · ASUS says the Wi-Fi 6E 6 GHz band is supported only in Windows 11 or later and depends on local regulations; Bluetooth versions may vary by module. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Realtek 1 Gb Ethernet; Wi-Fi 6 (1x1); Bluetooth 5.4	Realtek 2.5 Gb Ethernet; Wi-Fi 6E; Bluetooth 5.3
Wired EthernetDifferent Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Link-rate capability; real throughput depends on the connected network, cabling and workload. ASUS also lists LANGuard. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Link-rate capability; real throughput depends on the connected network, cabling and workload. ASUS also lists ASUS LANGuard. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Realtek 1 Gb Ethernet	Realtek 2.5 Gb Ethernet
Included Wi-Fi Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · 1x1 Wi-Fi 6 on the 2.4 and 5 GHz bands (not Wi-Fi 6E or 7). ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · 2x2 Wi-Fi 6E (not Wi-Fi 7). The 6 GHz band is supported only in Windows 11 or later and depends on local regulations. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Yes	Yes
Listed Bluetooth versionDifferent Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · The manufacturer notes that the Bluetooth version can depend on the installed wireless module. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · The manufacturer notes that the Bluetooth version can depend on the installed wireless module. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	5.4	5.3

Motherboard power connections Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Check the complete connector list and the PSU cable type. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Check the complete connector list and the PSU cable type. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	1 × 24-pin Main Power connector; 1 × 8-pin +12V CPU Power connector; 1 × 4-pin +12V CPU Power connector	1 × 24-pin Main Power connector; 1 × 8-pin +12V CPU Power connector; 1 × 4-pin +12V CPU Power connector
Fan and pump headers Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Header counts do not specify electrical current limits. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Header counts do not specify electrical current limits. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	1 CPU; 1 CPU OPT; 1 AIO pump; 4 chassis fan headers (all 4-pin)	1 CPU; 1 CPU OPT; 1 AIO pump; 4 chassis fan headers (all 4-pin)
Diagnostic indicators Sources ASUS B850M MAX GAMING WIFI Manufacturer specification ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Q-LED Core	Q-LED Core
Lighting headers Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · Check the manual for connector voltage and LED limits before connecting lighting. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · Check the manual for connector voltage and LED limits before connecting lighting. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	3 addressable RGB Gen 2 headers	3 addressable RGB Gen 2 headers

Specification marketDifferent Sources ASUS B850M MAX GAMING WIFI Manufacturer specification · UK and US buying links are searches, not proof of stock, identical regional wireless modules, bundles or warranty. Confirm the exact model and part identifier with the retailer. ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI Manufacturer specification · The ASUS UK product page lists the same model; its UK specification page returned no specification text to a plain request on 27 September 2026. UK and US buying links are searches, not proof of stock, identical regional wireless modules, bundles or warranty. ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	ASUS UK documentation	ASUS US documentation

Show unverified (3)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.

Specifications without verified values for either product
SATA RAID modes Sources ASUS B850M MAX GAMING WIFI ASUS lists AMD RAIDXpert2 levels per CPU family (Ryzen 9000: 0/1/5/10; 8000: 0/1; 7000: 0/1/10) without stating which apply to SATA versus NVMe devices. · Manufacturer specification ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI ASUS lists AMD RAIDXpert2 levels per CPU family (Ryzen 9000: 0/1/5/10; 8000: 0/1; 7000: 0/1/10) without stating which apply to SATA versus NVMe devices. · Manufacturer specification ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Not listed by the manufacturer	Not listed by the manufacturer
NVMe RAID modes Sources ASUS B850M MAX GAMING WIFI ASUS lists AMD RAIDXpert2 levels per CPU family (Ryzen 9000: 0/1/5/10; 8000: 0/1; 7000: 0/1/10) without stating which apply to NVMe versus SATA devices. · Manufacturer specification ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI ASUS lists AMD RAIDXpert2 levels per CPU family (Ryzen 9000: 0/1/5/10; 8000: 0/1; 7000: 0/1/10) without stating which apply to NVMe versus SATA devices. · Manufacturer specification ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Not listed by the manufacturer	Not listed by the manufacturer
Rear Clear CMOS button Sources ASUS B850M MAX GAMING WIFI ASUS's complete back-panel list has no Clear CMOS button; it lists an internal Clear CMOS header instead. Omission is recorded as unconfirmed rather than a sourced absence. · Manufacturer specification ASUS B850M MAX GAMING WIFI — technical specifications (ASUS UK) ASUS PRIME B850-PLUS WIFI ASUS's complete back-panel list has no Clear CMOS button; it lists an internal Clear CMOS header instead. Omission is recorded as unconfirmed rather than a sourced absence. · Manufacturer specification ASUS PRIME B850-PLUS WIFI — technical specifications (ASUS US)	Not listed by the manufacturer	Not listed by the manufacturer

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