AMD · CPU
AMD Ryzen 9 PRO 9955
AMD Ryzen 9 PRO 9955 — Specifications and benchmarks. .
These specifications are supported by the linked sources. Core counts, clocks and memory capacities do not predict workload performance. Check benchmark versions, environments and sample counts.
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Power
| Parameter | Value and conditions |
|---|---|
| TDP | 120 W Source and conditions{
"state": "known",
"raw_label": "Default TDP",
"raw_value": "120W",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "Default TDP",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}120 W Source and conditions{
"state": "known",
"raw_label": "Default TDP",
"raw_value": "120W",
"qualifiers": {
"source_field": "Default TDP",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
Compute
| Parameter | Value and conditions |
|---|---|
| Base clock | 3,400 MHz Source and conditions{
"state": "known",
"raw_label": "Base Clock",
"raw_value": "3.4 GHz",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "Base Clock",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}3,400 MHz Source and conditions{
"state": "known",
"raw_label": "Base Clock",
"raw_value": "3.4 GHz",
"qualifiers": {
"source_field": "Base Clock",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Max boost clock | 5,400 MHz Source and conditions{
"state": "known",
"raw_label": "Max. Boost Clock",
"raw_value": "Up to 5.4 GHz",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "Max. Boost Clock",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}5,400 MHz Source and conditions{
"state": "known",
"raw_label": "Max. Boost Clock",
"raw_value": "Up to 5.4 GHz",
"qualifiers": {
"source_field": "Max. Boost Clock",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| CPU cores | 12 Source and conditions{
"state": "known",
"raw_label": "# of CPU Cores",
"raw_value": "12",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "# of CPU Cores",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}12 Source and conditions{
"state": "known",
"raw_label": "# of CPU Cores",
"raw_value": "12",
"qualifiers": {
"source_field": "# of CPU Cores",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Published process node | TSMC 4nm FinFET Source and conditions{
"state": "known",
"raw_label": "Processor Technology for CPU Cores",
"raw_value": "TSMC 4nm FinFET",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "Processor Technology for CPU Cores",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}TSMC 4nm FinFET Source and conditions{
"state": "known",
"raw_label": "Processor Technology for CPU Cores",
"raw_value": "TSMC 4nm FinFET",
"qualifiers": {
"source_field": "Processor Technology for CPU Cores",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| threads | 24 Source and conditions{
"state": "known",
"raw_label": "# of Threads",
"raw_value": "24",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "# of Threads",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}24 Source and conditions{
"state": "known",
"raw_label": "# of Threads",
"raw_value": "24",
"qualifiers": {
"source_field": "# of Threads",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
Memory
| Parameter | Value and conditions |
|---|---|
| ECC Supported | Sources disagree Unresolved Source and conditions{
"state": "unresolved",
"raw_label": "ECC Support",
"raw_value": "Yes (Requires mobo support)",
"qualifiers": {
"source_field": "ECC Support",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| L2 cache | 12 MB Source and conditions{
"state": "known",
"raw_label": "L2 Cache",
"raw_value": "12 MB",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "L2 Cache",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}12 MB Source and conditions{
"state": "known",
"raw_label": "L2 Cache",
"raw_value": "12 MB",
"qualifiers": {
"source_field": "L2 Cache",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| L3 cache | 64 MB Source and conditions{
"state": "known",
"raw_label": "L3 Cache",
"raw_value": "64 MB",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "L3 Cache",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}64 MB Source and conditions{
"state": "known",
"raw_label": "L3 Cache",
"raw_value": "64 MB",
"qualifiers": {
"source_field": "L3 Cache",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Max supported memory | 256 GB Source and conditions{
"state": "known",
"raw_label": "Max. Memory",
"raw_value": "256 GB",
"qualifiers": {
"source_field": "Max. Memory",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Memory channels | 2 Source and conditions{
"state": "known",
"raw_label": "Memory Channels",
"raw_value": "2",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "Memory Channels",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}2 Source and conditions{
"state": "known",
"raw_label": "Memory Channels",
"raw_value": "2",
"qualifiers": {
"source_field": "Memory Channels",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Published DIMM populations | 2, 4 Source and conditions{
"state": "known",
"raw_label": "Supported DIMM populations",
"raw_value": "2, 4",
"qualifiers": {
"source_field": "Supported DIMM populations",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-dimm-populations-1ac7e1d3d0426ba6"
} |
| Supported RAM module types | UDIMM Source and conditions{
"state": "known",
"raw_label": "System Memory Subtype",
"raw_value": "UDIMM",
"qualifiers": {
"source_field": "System Memory Subtype",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Memory type | DDR5 Source and conditions{
"state": "known",
"raw_label": "System Memory Type",
"raw_value": "DDR5",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "System Memory Type",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}DDR5 Source and conditions{
"state": "known",
"raw_label": "System Memory Type",
"raw_value": "DDR5",
"qualifiers": {
"source_field": "System Memory Type",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
Connectivity and features
| Parameter | Value and conditions |
|---|---|
| Native CPU USB 2.0 ports | 1 Source and conditions{
"state": "known",
"raw_label": "Native USB 2.0 (480Mbps)",
"raw_value": "1",
"qualifiers": {
"source_field": "Native USB 2.0 (480Mbps)",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Native CPU USB 3.2 Gen2 ports | 4 Source and conditions{
"state": "known",
"raw_label": "Native USB 3.2 Gen 2 (10Gbps)",
"raw_value": "4",
"qualifiers": {
"source_field": "Native USB 3.2 Gen 2 (10Gbps)",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Native CPU PCIe lanes | 28 Source and conditions{
"state": "known",
"raw_label": "Native PCIe Lanes (Total/Usable)",
"raw_value": "28",
"qualifiers": {
"lane_scope": "native-total",
"source_combined_value": "28 , 24",
"source_field": "Native PCIe Lanes (Total/Usable)",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Usable native CPU PCIe lanes | 24 Source and conditions{
"state": "known",
"raw_label": "Native PCIe Lanes (Total/Usable)",
"raw_value": "24",
"qualifiers": {
"lane_scope": "native-usable",
"source_combined_value": "28 , 24",
"source_field": "Native PCIe Lanes (Total/Usable)",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| SMT Supported | Supported Source and conditions{
"state": "known",
"raw_label": "Multithreading (SMT)",
"raw_value": "Yes",
"qualifiers": {
"source_field": "Multithreading (SMT)",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| Socket | AM5 Source and conditions{
"state": "known",
"raw_label": "CPU Socket",
"raw_value": "AM5",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "CPU Socket",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}AM5 Source and conditions{
"state": "known",
"raw_label": "CPU Socket",
"raw_value": "AM5",
"qualifiers": {
"source_field": "CPU Socket",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| CPU multiplier overclocking | Not supported Source and conditions{
"state": "known",
"raw_label": "Unlocked for Overclocking",
"raw_value": "No",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "Unlocked for Overclocking",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}Not supported Source and conditions{
"state": "known",
"raw_label": "Unlocked for Overclocking",
"raw_value": "No",
"qualifiers": {
"source_field": "Unlocked for Overclocking",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
Other specifications
| Parameter | Value and conditions |
|---|---|
| AMD integrated GPU compute units | 2 Source and conditions{
"state": "known",
"raw_label": "Graphics Core Count",
"raw_value": "2",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "Graphics Core Count",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}2 Source and conditions{
"state": "known",
"raw_label": "Graphics Core Count",
"raw_value": "2",
"qualifiers": {
"source_field": "Graphics Core Count",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
| AMD integrated GPU frequency | 2,200 MHz Source and conditions{
"state": "known",
"raw_label": "Graphics Frequency",
"raw_value": "2200 MHz",
"qualifiers": {
"release_evidence": "dated-manufacturer-listing",
"source_field": "Graphics Frequency",
"source_product_url": "https://www.amd.com/en/products/processors/desktops/ryzen-pro/9000-series/amd-ryzen-9-pro-9955.html",
"source_row": 99
},
"document_id": "amd-processors-table-db4e6b78d9e5a0ac"
}2,200 MHz Source and conditions{
"state": "known",
"raw_label": "Graphics Frequency",
"raw_value": "2200 MHz",
"qualifiers": {
"source_field": "Graphics Frequency",
"source_row": 1
},
"document_id": "detail-9dfa7470adea3414-1ac7e1d3d0426ba6"
} |
Public benchmarks
Compare results with matching versions, scenes, settings and statistics. A run count of 0 identifies an aggregate or reported value, not a newly measured run.
No comparable public scores are available. This does not mean a score of zero or poor performance.
Sources
Source terms and retrieval dates are listed below. Published values and conditions may change.
- View source ↗ 2026-10-09
Official AMD DataTables complete row data read in browser; captured source JSON retained
- View source ↗ 2026-10-09
Complete official manufacturer detail/compare table; original HTML retained
- View source ↗ 2026-10-09
Explicit module counts from AMD rank/population speed table; not physical motherboard slot count