AM4 · Micro-ATX · DDR4 · board-only configuration · MSI global specification
A compact Micro-ATX AM4 motherboard with AMD A520: two DDR4 slots (up to 64 GB, DDR4-4600+ OC), a PCIe 3.0 x16 graphics slot, one M.2 slot and Realtek 1 Gb Ethernet.
Specifications checked 21 Sept 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
Manufacturer specificationsDifferent platforms: AM4 vs AM5 sockets. Each board fits only processors made for its socket. DDR4 and DDR5 memory are not interchangeable.
Choose the A520M-A PRO for
Choose the PRO A620M-E for
AM5 · Micro-ATX · DDR5 · board-only configuration · MSI global specification
A Micro-ATX AM5 motherboard with AMD A620: two DDR5 slots (up to 128 GB, DDR5-6800+ OC), a PCIe 4.0 x16 graphics slot, one PCIe 4.0 x4 M.2 slot and Realtek 1 Gb Ethernet.
Specifications checked 21 Sept 2026.
Amazon links open search results. Check the exact variant, current price and availability with the retailer.
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Differences first. Select a topic for its graphic, sources and conditions.
Check the exact configuration and source conditions for your use.
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.
11 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. Missing information stays separate.
Manufacturer specification · Match the exact CPU and required BIOS as well as the physical socket.
MSI A520M-A PRO — manufacturer specificationsManufacturer specification · Match the exact CPU and required BIOS as well as the physical socket.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
Different hardware. A chip name or generation does not quantify real-world performance.
The overclocked speed is MSI's 1DPC 1R maximum; MSI lists 1DPC 2R up to 3866 MHz. JEDEC speeds run up to DDR4-3200. · Manufacturer specification · CPU, BIOS and validated DIMM population determine supported capacity and speeds. DDR4 and DDR5 are not interchangeable.
MSI A520M-A PRO — manufacturer specificationsThe overclocked speed is MSI's 1DPC 1R maximum; MSI lists 1DPC 2R up to 6000+ MHz. JEDEC default is DDR5-4800. · Manufacturer specification · CPU, BIOS and validated DIMM population determine supported capacity and speeds. DDR4 and DDR5 are not interchangeable.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR4 slots require DDR4 modules; DDR4 and DDR5 are not interchangeable.
MSI A520M-A PRO — manufacturer specificationsManufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR5 slots require DDR5 modules; DDR4 and DDR5 are not interchangeable.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
The M.2 slot connects to the CPU. · Manufacturer specification · With Athlon processors with Radeon Vega Graphics the M.2 slot works in SATA mode only. It accepts 2242/2260/2280 drives.
MSI A520M-A PRO — manufacturer specificationsM2_1 connects to the CPU. · Manufacturer specification · M2_1 accepts 2280/2260 drives.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
Manufacturer specification · Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised.
MSI A520M-A PRO — manufacturer specificationsManufacturer specification · Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
Manufacturer specification · MSI's datasheet lists EZ Debug LED without the LED count; it is not a numeric POST code display.
MSI A520M-A PRO — exact model datasheetCheck the exact configuration and source conditions for your use.
Manufacturer specification · Counts do not establish connector current limits.
MSI A520M-A PRO — manufacturer specificationsManufacturer specification · Counts do not establish connector current limits.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
Manufacturer specification · Requires a processor with integrated graphics; supported modes depend on the CPU.
MSI A520M-A PRO — manufacturer specificationsManufacturer specification · Requires integrated CPU graphics. VGA limits: 2048×1536 at 50 Hz, 2048×1280 or 1920×1200 at 60 Hz.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
MSI labels these memory speeds in MHz (manufacturer notation); they are the rated data rates. · Manufacturer specification · Manufacturer A-XMP/OC limits, not guaranteed stability or measured performance. CPU, BIOS and memory-module compatibility apply.
MSI A520M-A PRO — manufacturer specificationsMSI labels these memory speeds in MHz (manufacturer notation); they are the rated data rates. · Manufacturer specification · Manufacturer OC limits, not guaranteed stability or measured performance. CPU, BIOS and memory-module compatibility apply.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
Manufacturer specification · x16 with Ryzen 5000/5000G/4000G/3000; x8 with Ryzen 3000G; x4 with Athlon with Radeon Graphics processors. Check the CPU support list for the exact processor.
MSI A520M-A PRO — manufacturer specificationsManufacturer specification · x16 with Ryzen 9000/7000; x8 with Ryzen 8700/8600/8400; x4 with Ryzen 8500/8300.
MSI PRO A620M-E — manufacturer specificationsCheck the exact configuration and source conditions for your use.
Manufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing.
MSI A520M-A PRO — manufacturer specificationsManufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing.
MSI PRO A620M-E — manufacturer specificationsThese descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.
Manufacturer specification · Check MSI's exact CPU support list and its required BIOS. Family support does not confirm the firmware installed on a retail board.
MSI A520M-A PRO — manufacturer specificationsManufacturer specification · Check MSI's exact CPU support list and its required BIOS. Family support does not confirm the firmware installed on a retail board.
MSI PRO A620M-E — manufacturer specificationsThese descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.
MSI's rear-panel list for this board does not mention a Flash BIOS button; check the manual if you need BIOS flashback. · Manufacturer specification
MSI A520M-A PRO — manufacturer specificationsMSI's rear-panel list for this board does not mention a Flash BIOS button; check the manual if you need BIOS flashback. · Manufacturer specification
MSI PRO A620M-E — manufacturer specificationsEvidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · ECC modules run in non-ECC mode, so error correction is not active.
MSI A520M-A PRO — manufacturer specificationsMSI specifies non-ECC unbuffered memory and does not say whether ECC modules are accepted. · Manufacturer specification
MSI PRO A620M-E — manufacturer specificationsEvidence is missing or conflicting on at least one side. This is not a verified difference.
MSI lists RAID modes for SATA drives only; NVMe RAID support is not stated. · Manufacturer specification
MSI A520M-A PRO — manufacturer specificationsMSI lists RAID modes for SATA drives only; NVMe RAID support is not stated. · Manufacturer specification
MSI PRO A620M-E — manufacturer specificationsEvidence is missing or conflicting on at least one side. This is not a verified difference.
8 shared fields have the same recorded value.
| Specification | MSI A520M-A PRO | MSI PRO A620M-E |
|---|---|---|
CPU socketDifferent SourcesMSI A520M-A PRO Manufacturer specification · Match the exact CPU and required BIOS as well as the physical socket. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Match the exact CPU and required BIOS as well as the physical socket. MSI PRO A620M-E — manufacturer specifications | AM4 | AM5 |
ChipsetDifferent Sources | AMD A520 | AMD A620 |
Form factorDifferent SourcesMSI A520M-A PRO Manufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Board dimensions, not retail packaging. Check case mounting positions, clearance and cable routing. MSI PRO A620M-E — manufacturer specifications | Micro-ATX; 236 × 200 mm | Micro-ATX; 243.84 × 211 mm |
CPU support / BIOS sourceDifferent SourcesMSI A520M-A PRO Manufacturer specification · Check MSI's exact CPU support list and its required BIOS. Family support does not confirm the firmware installed on a retail board. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Check MSI's exact CPU support list and its required BIOS. Family support does not confirm the firmware installed on a retail board. MSI PRO A620M-E — manufacturer specifications | AMD Ryzen 5000 / 5000 G-Series / 4000 G-Series / 3000 / 3000 G-Series | AMD Ryzen 9000 / 8000 / 7000 Series |
Memory type, slots and limitDifferent SourcesMSI A520M-A PRO The overclocked speed is MSI's 1DPC 1R maximum; MSI lists 1DPC 2R up to 3866 MHz. JEDEC speeds run up to DDR4-3200. · Manufacturer specification · CPU, BIOS and validated DIMM population determine supported capacity and speeds. DDR4 and DDR5 are not interchangeable. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E The overclocked speed is MSI's 1DPC 1R maximum; MSI lists 1DPC 2R up to 6000+ MHz. JEDEC default is DDR5-4800. · Manufacturer specification · CPU, BIOS and validated DIMM population determine supported capacity and speeds. DDR4 and DDR5 are not interchangeable. MSI PRO A620M-E — manufacturer specifications | 2 DDR4 DIMM slots; dual channel; up to 64 GB; up to DDR4-4600+ (OC); A-XMP; non-ECC unbuffered | 2 DDR5 DIMM slots; dual channel; up to 128 GB; up to DDR5-6800+ (OC); AMD EXPO; non-ECC unbuffered |
Maximum listed memoryDifferent SourcesMSI A520M-A PRO Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR4 slots require DDR4 modules; DDR4 and DDR5 are not interchangeable. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Manufacturer capacity ceiling for this exact board, not included memory or a performance measurement. CPU, BIOS, DIMM population and the validated-module list determine support. DDR5 slots require DDR5 modules; DDR4 and DDR5 are not interchangeable. MSI PRO A620M-E — manufacturer specifications | 64 GB | 128 GB |
DIMM slots SourcesMSI A520M-A PRO Manufacturer specification · Physical DDR4 module positions, not included modules. Consult the board manual for population order and compatible capacities. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Physical DDR5 module positions, not included modules. Consult the board manual for population order and compatible capacities. MSI PRO A620M-E — manufacturer specifications | 2 | 2 |
Memory population OC limitsDifferent SourcesMSI A520M-A PRO MSI labels these memory speeds in MHz (manufacturer notation); they are the rated data rates. · Manufacturer specification · Manufacturer A-XMP/OC limits, not guaranteed stability or measured performance. CPU, BIOS and memory-module compatibility apply. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E MSI labels these memory speeds in MHz (manufacturer notation); they are the rated data rates. · Manufacturer specification · Manufacturer OC limits, not guaranteed stability or measured performance. CPU, BIOS and memory-module compatibility apply. MSI PRO A620M-E — manufacturer specifications | 1DPC 1R: 4600 MHz; 1DPC 2R: 3866 MHz | 1DPC 1R: 6800+ MHz; 1DPC 2R: 6000+ MHz |
ECC memory operating mode SourcesMSI A520M-A PRO Manufacturer specification · ECC modules run in non-ECC mode, so error correction is not active. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E MSI specifies non-ECC unbuffered memory and does not say whether ECC modules are accepted. · Manufacturer specification MSI PRO A620M-E — manufacturer specifications | ECC UDIMM accepted in non-ECC mode | Not provided |
Storage interfacesDifferent SourcesMSI A520M-A PRO The M.2 slot connects to the CPU. · Manufacturer specification · With Athlon processors with Radeon Vega Graphics the M.2 slot works in SATA mode only. It accepts 2242/2260/2280 drives. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E M2_1 connects to the CPU. · Manufacturer specification · M2_1 accepts 2280/2260 drives. MSI PRO A620M-E — manufacturer specifications | 1 × M.2 PCIe 3.0 x4; M.2 slot also supports SATA; 4 × SATA 6 Gb/s | 1 × M.2 PCIe 4.0 x4; 4 × SATA 6 Gb/s |
Onboard M.2 storage slots SourcesMSI A520M-A PRO Manufacturer specification · Onboard M.2 storage positions only. With Athlon processors with Radeon Vega Graphics, MSI lists SATA mode only for M.2. Supported M.2 lengths are 2242/2260/2280; verify the exact processor support list. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Onboard M.2 storage positions only. M2_1 accepts 2280/2260 drives. Check exact processor, BIOS and drive compatibility. MSI PRO A620M-E — manufacturer specifications | 1 | 1 |
SATA storage ports SourcesMSI A520M-A PRO Manufacturer specification · SATA 6 Gb/s connectors, not supplied drives or power cables. With Athlon processors with Radeon Vega Graphics, MSI lists SATA mode only for M.2. Supported M.2 lengths are 2242/2260/2280; verify the exact processor support list. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · SATA 6 Gb/s connectors, not supplied drives or power cables. M2_1 accepts 2280/2260 drives. Check exact processor, BIOS and drive compatibility. MSI PRO A620M-E — manufacturer specifications | 4 | 4 |
SATA RAID modes Sources | RAID 0/1/10 | RAID 0/1/10 |
Primary PCIe linkDifferent SourcesMSI A520M-A PRO Manufacturer specification · x16 with Ryzen 5000/5000G/4000G/3000; x8 with Ryzen 3000G; x4 with Athlon with Radeon Graphics processors. Check the CPU support list for the exact processor. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · x16 with Ryzen 9000/7000; x8 with Ryzen 8700/8600/8400; x4 with Ryzen 8500/8300. MSI PRO A620M-E — manufacturer specifications | x16 slot: CPU PCIe 3.0 up to x16 | PCI_E1: CPU PCIe 4.0 up to x16 |
Secondary expansion links SourcesMSI PRO A620M-E Manufacturer specification · The secondary connector is labelled PCI_E2 on this model. MSI PRO A620M-E — manufacturer specifications | 1 PCIe 3.0 x1 slot | 1 PCIe 3.0 x1 slot |
Onboard audio hardwareDifferent SourcesMSI A520M-A PRO Manufacturer specification · Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Manufacturer-listed onboard audio hardware, not a measured sound-quality result. Where alternatives are listed, no particular unseen controller revision is promised. MSI PRO A620M-E — manufacturer specifications | Realtek ALC892 or ALC897 codec; 7.1-channel | Realtek ALC897 codec; 7.1-channel |
Processor-dependent display outputsDifferent SourcesMSI A520M-A PRO Manufacturer specification · Requires a processor with integrated graphics; supported modes depend on the CPU. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Requires integrated CPU graphics. VGA limits: 2048×1536 at 50 Hz, 2048×1280 or 1920×1200 at 60 Hz. MSI PRO A620M-E — manufacturer specifications | HDMI 2.1: up to 4096×2160 at 60 Hz; DVI-D: up to 1920×1200 at 60 Hz | HDMI 2.1: up to 4K 60 Hz; VGA |
Rear USB ports SourcesMSI A520M-A PRO Manufacturer specification · The detailed specification identifies the two rear USB 2.0 ports as Type-A. MSI A520M-A PRO — manufacturer specifications | 2 USB 2.0; 4 USB 5 Gb/s Type-A | 2 USB 2.0; 4 USB 5 Gb/s Type-A |
Front USB header capacity SourcesMSI A520M-A PRO Manufacturer specification · Internal-header capacity; requires compatible case ports and wiring. Not rear-panel sockets. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Internal-header capacity; requires compatible case ports and wiring. Not rear-panel sockets. MSI PRO A620M-E — manufacturer specifications | 4 USB 2.0; 2 USB 5 Gb/s | 4 USB 2.0; 2 USB 5 Gb/s |
Network interfaces SourcesMSI A520M-A PRO Manufacturer specification · Wired Ethernet only; MSI lists no Wi-Fi or Bluetooth hardware for this board. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Wired Ethernet only; MSI lists no Wi-Fi or Bluetooth hardware for this board. MSI PRO A620M-E — manufacturer specifications | Realtek 8111H 1 Gb Ethernet | Realtek 8111H 1 Gb Ethernet |
Fan and pump headersDifferent SourcesMSI A520M-A PRO Manufacturer specification · Counts do not establish connector current limits. MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E Manufacturer specification · Counts do not establish connector current limits. MSI PRO A620M-E — manufacturer specifications | 1 CPU; 1 system fan header | 1 CPU; 2 system fan headers |
Diagnostic indicatorsDifferent SourcesMSI A520M-A PRO Manufacturer specification · MSI's datasheet lists EZ Debug LED without the LED count; it is not a numeric POST code display. MSI A520M-A PRO — exact model datasheet | EZ Debug LED | 4 EZ Debug LEDs |
NVMe RAID modes SourcesMSI A520M-A PRO MSI lists RAID modes for SATA drives only; NVMe RAID support is not stated. · Manufacturer specification MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E MSI lists RAID modes for SATA drives only; NVMe RAID support is not stated. · Manufacturer specification MSI PRO A620M-E — manufacturer specifications | Not provided | Not provided |
|---|---|---|
Rear Flash BIOS button SourcesMSI A520M-A PRO MSI's rear-panel list for this board does not mention a Flash BIOS button; check the manual if you need BIOS flashback. · Manufacturer specification MSI A520M-A PRO — manufacturer specificationsMSI PRO A620M-E MSI's rear-panel list for this board does not mention a Flash BIOS button; check the manual if you need BIOS flashback. · Manufacturer specification MSI PRO A620M-E — manufacturer specifications | Not provided | Not provided |
Closest motherboards to this pair by shared key specifications. Not a popularity ranking.
Each record represents an explicitly checked model and configuration. Original import: 5 Sept 2026; this is not its verification date. This is not a list of current offers or a popularity ranking.
