AMD Ryzen 9 PRO 9955
Specifications
LAUNCH
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Released | 2026-06-30 |
CPU BENCHMARKS
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Geekbench 6 Single | - |
| Geekbench 6 Multi | - |
| iGPU 3DMark TS | - |
ARCHITECTURE & CORES
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Architecture | Zen 5 (Granite Ridge AM5) |
| Process | 4 nm |
Show all 4 parameters in ARCHITECTURE & CORES
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
Cores / ThreadsMeaning & limitsPhysical cores and available threads are separate counts. Hybrid core types and unknown thread counts retain their stated limits. | 12C/24T |
| Core Topology | Zen 5 · 12 cores · base 3.4 GHz · max 5.4 GHz (manufacturer maximum CPU boost, not sustained or all-core)One CPU package |
CLOCK & CACHE
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Clock Speed | 3.4 / 5.4 GHz |
CacheMeaning & limitsCache can be total, per core, private or shared. Read the stated topology; total cache is not automatically L3. | - |
Show all 7 parameters in CLOCK & CACHE
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Total L1 Cache | 960 KBOne CPU package |
| Total L3 Cache | 64 MBOne CPU package |
| Cache Topology · 1 | L1 · unspecified · 960 KB · package total · 1 instancesOne CPU package |
| Cache Topology · 2 | L2 · unspecified · 12 MB · package total · 1 instancesOne CPU package |
| Cache Topology · 3 | L3 · unspecified · 64 MB · package total · 1 instancesOne CPU package |
POWER & BATTERY
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Default TDP | 120 WOne CPU package |
| Power Profiles | Default TDP · 120 W · Exact manufacturer default thermal design power; no measured draw or PPT inferred.Processor power specification |
Show all 3 parameters in POWER & BATTERY
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
Power rating / limitMeaning & limitsStored power rating or limit. Default TDP, processor base power and maximum turbo power describe different conditions; neither larger nor smaller is automatically better. | 120 W |
MEMORY & STORAGE
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| ECC Memory Support | Yes · Requires compatible motherboard support; CPU ECC capability, not proof that ECC is activated in any particular host.CPU ECC capability; system conditions apply |
| Maximum Memory Capacity | 256 GBOne CPU package |
Show all 7 parameters in MEMORY & STORAGE
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Memory Profiles · 1 | DDR5 · up to 5600 MT/s · 2x1R UDIMM · Manufacturer maximum transfer rate for the stated DIMM population; MT/s, not physical clock MHz.One CPU package |
| Memory Profiles · 2 | DDR5 · up to 5600 MT/s · 2x2R UDIMM · Manufacturer maximum transfer rate for the stated DIMM population; MT/s, not physical clock MHz.One CPU package |
| Memory Profiles · 3 | DDR5 · up to 3600 MT/s · 4x1R UDIMM · Manufacturer maximum transfer rate for the stated DIMM population; MT/s, not physical clock MHz.One CPU package |
| Memory Profiles · 4 | DDR5 · up to 3600 MT/s · 4x2R UDIMM · Manufacturer maximum transfer rate for the stated DIMM population; MT/s, not physical clock MHz.One CPU package |
| Memory Type | DDR5One CPU package |
PLATFORM & HARDWARE
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Platform | - |
| Socket | AM5 |
Show all 4 parameters in PLATFORM & HARDWARE
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| iGPU | AMD Radeon Graphics |
iGPU FP32 TFLOPSMeaning & limitsFP32 describes floating-point capability or a published reference, not a measured application result. Method and clock conditions affect interpretation. | - |
CONNECTIVITY & EXPANSION
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Total Native PCIe Lanes | 28 lanesOne CPU package |
| Usable Native PCIe Lanes | 24 lanesOne CPU package |
BODY & DIMENSIONS
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Package Size (L × W) | - |
OTHER SPECIFICATIONS
| Parameter | AMD Ryzen 9 PRO 9955 |
|---|---|
| Manufacturer | AMD |
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