AM4 boxed processor 100-100000059WOF · cooler not included
A 16-core, 32-thread Zen 3 processor for AM4 with up to 4.9 GHz boost, 64 MB of L3 cache and a 105 W TDP. It is unlocked for overclocking; the boxed version has no cooler or integrated graphics.
Specifications checked 12 Sept 2026.
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Manufacturer specificationsDifferent platforms: AM4 vs AM5 sockets. Each processor fits only motherboards made for its socket.
Choose the 5950X for
Choose the 9900X for
AM5 boxed processor 100-100000662WOF · cooler not included
A 12-core, 24-thread Zen 5 processor for AM5 with up to 5.6 GHz boost, 64 MB of L3 cache and a 120 W default TDP. It is unlocked for overclocking and includes basic Radeon integrated graphics; the boxed version has no cooler.
Specifications checked 12 Sept 2026.
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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.
Check each processor’s platform. Match each processor to its supported socket, motherboard CPU-support list, BIOS, memory type and cooler. The two processors may require different platforms. No overall winner is declared without comparable performance and price evidence.
15 verified differences, most decision-relevant first. 7 are also drawn in Visual facts above. 3 manufacturer descriptions restating separately listed fields are grouped below. Missing information stays separate.
Manufacturer specification
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification · AMD's CPU core architecture.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD's CPU core architecture.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersDifferent hardware. A chip name or generation does not quantify real-world performance.
Manufacturer specification
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification · Peak boost clock, not a sustained all-core speed.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Peak boost clock, not a sustained all-core speed.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersPublished clock limits are not application speed. Boost depends on workload, cooling and firmware; it is not a sustained all-core frequency.
Manufacturer specification · AMD lists the CPU as unlocked for overclocking and supported by Ryzen Master. Results depend on the motherboard, cooling and the individual chip.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD lists the CPU as unlocked for overclocking, with EXPO memory profiles, Precision Boost Overdrive, Curve Optimizer and Ryzen Master support. Results depend on the motherboard, cooling and the individual chip.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersMemory profiles, automatic boost tuning and fully unlocked CPU overclocking are different capabilities. Read the supported controls and motherboard conditions for each processor.
Manufacturer specification
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification · AMD says a discrete graphics card is required; the motherboard's video ports won't work with this processor.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Manufacturer graphics configuration, not a measured gaming result. Display outputs depend on the motherboard.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification · CPU PCIe version, not the number of motherboard slots or a guarantee of the board's bandwidth.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Native CPU version and lane totals, not graphics-slot width or motherboard slot count. Actual links depend on the motherboard and installed devices.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification · Check the motherboard's CPU-support list, BIOS and memory support list. XMP speeds above this rating are not guaranteed.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD rates two DIMMs (single- or dual-rank) at DDR5-5600 and four at DDR5-3600. Check the motherboard's memory support list; EXPO speeds aren't guaranteed.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification · Liquid cooler recommended for optimal performance
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD doesn't include a cooler with this boxed version; choose one that fits AM5 and the motherboard.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification · Default TDP, not measured system power.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Default TDP, not measured system power.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersPublished power specifications are not measured electricity use or an efficiency ranking.
Manufacturer specification · Base frequency; boost clocks are listed separately.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD's base frequency, not a guaranteed all-core speed under every workload.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersPublished clock limits are not application speed. Boost depends on workload, cooling and firmware; it is not a sustained all-core frequency.
Manufacturer specification · Manufacturing process for the CPU cores.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Manufacturing process for the CPU cores.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification · AMD's maximum operating temperature (Tjmax), not a typical running temperature.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD's maximum operating temperature (Tjmax), not a typical running temperature.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersThis is the specified junction-temperature limit, not a measured operating temperature or a cooling-efficiency score.
Combined manufacturer descriptions whose values are listed as separate differences. Kept here so every verified difference stays in one list.
Manufacturer specification · Maximum boost is not sustained all-core frequency. Workload, cooling and firmware affect clocks.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Maximum boost is not a sustained all-core frequency. Workload, cooling and firmware affect clocks.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersPublished clock limits are not application speed. Boost depends on workload, cooling and firmware; it is not a sustained all-core frequency.
Manufacturer specification · Core count and architecture alone don't determine application performance.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Manufacturer core count and architecture, not an application-performance ranking.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersDifferent hardware. A chip name or generation does not quantify real-world performance.
Manufacturer specification · AMD's thermal design rating, not the power the whole system will draw.
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD's thermal design rating, not the power the whole system will draw.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersCheck the exact configuration and source conditions for your use.
Manufacturer specification
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersThese descriptions or measurements differ. Wording alone does not establish a different capability; check the exact configuration.
Manufacturer specification · AMD says a discrete graphics card is required.
AMD Ryzen 9 5950X — manufacturer specificationsNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
AMD's 5950X page doesn't list a maximum memory capacity; check the motherboard's specifications for supported kit sizes. · Manufacturer specification
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD's CPU limit; the motherboard, its BIOS and the memory kit must also support this capacity.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Applies to two single-rank or two dual-rank DDR5 modules. EXPO memory overclocking is separate and depends on the motherboard.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Applies to four single-rank or four dual-rank DDR5 modules; slower than the two-module rating.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
AMD's 5950X page doesn't say whether ECC memory is supported; check the motherboard and CPU listing if you need ECC. · Manufacturer specification
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Needs a motherboard and memory that support ECC.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Automatic boost, separate from Precision Boost Overdrive and manual overclocking. Clocks vary with workload, cooling and power.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Graphics cores in the built-in Radeon graphics.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Built-in graphics clock; display outputs depend on the motherboard.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Manufacturing process for the separate I/O die.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Total L1 cache across all cores.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
AMD's 5950X page doesn't list the number of memory channels. · Manufacturer specification
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · Memory channels in the processor, not the number of motherboard DIMM slots.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · AMD lists up to DDR4-3200 without separate ratings for different numbers of DIMMs.
AMD Ryzen 9 5950X — manufacturer specificationsNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · USB provided by the processor itself; the motherboard decides which ports, including any USB4, are actually fitted.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · The motherboard, drivers and drives must also support these modes, and some boards offer fewer.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Number of dies in the processor package; not all of them contain CPU cores.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Chipset families AMD lists; check the motherboard's CPU-support list and BIOS version.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
AMD's 5950X page doesn't state a regional specification. · Manufacturer specification
AMD Ryzen 9 5950X — manufacturer specificationsManufacturer specification · AMD lists global availability; UK and US stock, box contents and warranty can still vary by seller.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
Manufacturer specification · AMD lists the CPU as unlocked for overclocking; the motherboard and firmware must support it, and results aren't guaranteed.
AMD Ryzen 9 5950X — manufacturer specificationsNo source recorded for this side.
Evidence is missing or conflicting on at least one side. This is not a verified difference.
No source recorded for this side.
Manufacturer specification · Needs a motherboard USB-C port wired for display output.
AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiersEvidence is missing or conflicting on at least one side. This is not a verified difference.
1 shared field has the same recorded value.
| Specification | AMD Ryzen 9 5950X | AMD Ryzen 9 9900X |
|---|---|---|
Thread countDifferent SourcesAMD Ryzen 9 9900X Manufacturer specification AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 32 | 24 |
CPU coresDifferent SourcesAMD Ryzen 9 9900X Manufacturer specification AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 16 | 12 |
Maximum boost clockDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · Peak boost clock, not a sustained all-core speed. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Peak boost clock, not a sustained all-core speed. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 4.9 GHz | 5.6 GHz |
CPU architectureDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · AMD's CPU core architecture. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD's CPU core architecture. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Zen 3 | Zen 5 |
Base clockDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · Base frequency; boost clocks are listed separately. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD's base frequency, not a guaranteed all-core speed under every workload. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 3.4 GHz | 4.4 GHz |
CPU unlocked for overclocking SourcesAMD Ryzen 9 5950X Manufacturer specification · AMD lists the CPU as unlocked for overclocking; the motherboard and firmware must support it, and results aren't guaranteed. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X No source recorded. | Yes | Not provided |
Tuning supportDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · AMD lists the CPU as unlocked for overclocking and supported by Ryzen Master. Results depend on the motherboard, cooling and the individual chip. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD lists the CPU as unlocked for overclocking, with EXPO memory profiles, Precision Boost Overdrive, Curve Optimizer and Ryzen Master support. Results depend on the motherboard, cooling and the individual chip. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Unlocked CPU overclocking; Ryzen Master support | Unlocked CPU overclocking; EXPO, PBO and Curve Optimizer |
CPU boost technology SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Automatic boost, separate from Precision Boost Overdrive and manual overclocking. Clocks vary with workload, cooling and power. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | Precision Boost 2 |
L2 cacheDifferent SourcesAMD Ryzen 9 9900X Manufacturer specification AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 8 MB | 12 MB |
L3 cache SourcesAMD Ryzen 9 5950X Manufacturer specification · Total L3 cache across the processor. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Total L3 cache across the processor. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 64 MB | 64 MB |
L1 cache SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Total L1 cache across all cores. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | 960 KB |
Memory supportDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · Check the motherboard's CPU-support list, BIOS and memory support list. XMP speeds above this rating are not guaranteed. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD rates two DIMMs (single- or dual-rank) at DDR5-5600 and four at DDR5-3600. Check the motherboard's memory support list; EXPO speeds aren't guaranteed. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | DDR4; up to 3200 MT/s | Dual-channel DDR5 UDIMM; up to 256 GB; DDR5-5600 with two DIMMs or DDR5-3600 with four |
Maximum supported memory SourcesAMD Ryzen 9 5950X AMD's 5950X page doesn't list a maximum memory capacity; check the motherboard's specifications for supported kit sizes. · Manufacturer specification AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD's CPU limit; the motherboard, its BIOS and the memory kit must also support this capacity. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not listed by the manufacturer | 256 GB |
CPU ECC memory capability SourcesAMD Ryzen 9 5950X AMD's 5950X page doesn't say whether ECC memory is supported; check the motherboard and CPU listing if you need ECC. · Manufacturer specification AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Needs a motherboard and memory that support ECC. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not listed by the manufacturer | Yes |
Memory channels SourcesAMD Ryzen 9 5950X AMD's 5950X page doesn't list the number of memory channels. · Manufacturer specification AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Memory channels in the processor, not the number of motherboard DIMM slots. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not listed by the manufacturer | 2 |
Listed memory transfer-rate ceiling SourcesAMD Ryzen 9 5950X Manufacturer specification · AMD lists up to DDR4-3200 without separate ratings for different numbers of DIMMs. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X No source recorded. | 3200 MT/s | Not provided |
Memory ceiling with two DIMMs SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Applies to two single-rank or two dual-rank DDR5 modules. EXPO memory overclocking is separate and depends on the motherboard. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | 5600 MT/s |
Memory ceiling with four DIMMs SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Applies to four single-rank or four dual-rank DDR5 modules; slower than the two-module rating. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | 3600 MT/s |
SocketDifferent SourcesAMD Ryzen 9 9900X Manufacturer specification AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | AM4 | AM5 |
PCIe configurationDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · CPU PCIe version, not the number of motherboard slots or a guarantee of the board's bandwidth. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Native CPU version and lane totals, not graphics-slot width or motherboard slot count. Actual links depend on the motherboard and installed devices. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | PCIe 4.0 | PCIe 5.0 · 28 total / 24 usable lanes |
Platform checksDifferent SourcesAMD Ryzen 9 9900X Manufacturer specification AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Supported AM4 motherboard and DDR4 memory required. Check the motherboard's CPU-support list and BIOS. A separate graphics card is required. | Supported AM5 motherboard and DDR5 memory required. Check the motherboard CPU-support list and BIOS before purchase. |
CPU-native USB capability SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · USB provided by the processor itself; the motherboard decides which ports, including any USB4, are actually fitted. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | 4 USB 10 Gb/s ports; 1 USB 2.0 port |
Platform NVMe modes SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · The motherboard, drivers and drives must also support these modes, and some boards offer fewer. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | Boot; RAID 0, 1, 5 and 10 |
USB-C DisplayPort Alternate Mode capability SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Needs a motherboard USB-C port wired for display output. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | Yes |
Listed supporting chipsets SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Chipset families AMD lists; check the motherboard's CPU-support list and BIOS version. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | A620, X670E, X670, B650E, B650, X870E, X870, B840, B850 |
Integrated graphics or noneDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · AMD says a discrete graphics card is required; the motherboard's video ports won't work with this processor. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Manufacturer graphics configuration, not a measured gaming result. Display outputs depend on the motherboard. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | None; a discrete graphics card is required | AMD Radeon Graphics · 2 graphics cores · 2200 MHz |
Integrated graphics available SourcesAMD Ryzen 9 5950X Manufacturer specification · AMD says a discrete graphics card is required. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X No source recorded. | No | Not provided |
Integrated graphics cores SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Graphics cores in the built-in Radeon graphics. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | 2 |
Integrated graphics frequency SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Built-in graphics clock; display outputs depend on the motherboard. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | 2200 MHz |
Default TDPDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · Default TDP, not measured system power. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Default TDP, not measured system power. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 105 W | 120 W |
CoolingDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · Liquid cooler recommended for optimal performance AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD doesn't include a cooler with this boxed version; choose one that fits AM5 and the motherboard. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Cooler required separately | Cooler required separately; AMD recommends liquid cooling for optimal performance |
Maximum junction temperatureDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · AMD's maximum operating temperature (Tjmax), not a typical running temperature. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD's maximum operating temperature (Tjmax), not a typical running temperature. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 90 °C | 95 °C |
CPU manufacturing processDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · Manufacturing process for the CPU cores. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Manufacturing process for the CPU cores. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | TSMC 7nm FinFET | TSMC 4nm FinFET |
I/O-die manufacturing process SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Manufacturing process for the separate I/O die. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | TSMC 6nm FinFET |
Package die count SourcesAMD Ryzen 9 5950X No source recorded. AMD Ryzen 9 9900X Manufacturer specification · Number of dies in the processor package; not all of them contain CPU cores. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not provided | 3 |
Specification region SourcesAMD Ryzen 9 5950X AMD's 5950X page doesn't state a regional specification. · Manufacturer specification AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD lists global availability; UK and US stock, box contents and warranty can still vary by seller. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | Not listed by the manufacturer | Global |
Core count and architectureDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · Core count and architecture alone don't determine application performance. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Manufacturer core count and architecture, not an application-performance ranking. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 16 cores · Zen 3 | 12 cores · Zen 5 |
|---|---|---|
Base / boost clocks and conditionsDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · Maximum boost is not sustained all-core frequency. Workload, cooling and firmware affect clocks. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · Maximum boost is not a sustained all-core frequency. Workload, cooling and firmware affect clocks. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 3.4 GHz base; up to 4.9 GHz boost | 4.4 GHz base; up to 5.6 GHz boost |
Processor power definitionsDifferent SourcesAMD Ryzen 9 5950X Manufacturer specification · AMD's thermal design rating, not the power the whole system will draw. AMD Ryzen 9 5950X — manufacturer specificationsAMD Ryzen 9 9900X Manufacturer specification · AMD's thermal design rating, not the power the whole system will draw. AMD Ryzen 9 9900X — exact manufacturer specifications and part identifiers | 105 W default TDP | 120 W default TDP |
Closest processors 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.
