AMD Ryzen Threadripper PRO 9955WX Workstation Processor
Procurement readiness
RFQ ReadyThe catalog record is approved for a standard quote request; current commercial terms still require RFQ review.
AMD Ryzen Threadripper PRO 9955WX is a 16-core, 32-thread Zen 5 workstation processor with 64 MB L3, a 4.5 GHz base clock and 350 W default TDP for qualified single-socket sTR5 platforms.
Quick Facts
- Cores
- 16
- Threads
- 32
- Base clock
- 4.5 GHz
- Default TDP
- 350 W
Highlights
- 16 cores / 32 threads; 64 MB L3
- 4.5 GHz base; up to 5.4 GHz single-core boost
- DDR5 RDIMM up to 6400 MT/s; platform conditions apply
- WRX90 and TRX50 expose different memory and PCIe resources
Source-backed product identity
RFQ before payment
Order terms confirmed in quotation
Exact availability, condition, warranty, lead time and shipping scope are confirmed in the quotation.
Technical Specifications
Platform & Compute
The 9955WX combines 16 cores and 32 threads with a 4.5 GHz base clock and 64 MB L3. Its eight-channel processor capability does not make a TRX50 installation eight-channel. Only its tray ordering identity is confirmed; a boxed code must not be inferred. An sTR5 socket does not establish OEM motherboard or BIOS compatibility. AMD lists WRX90, TRX50 and Pro 695 supporting chipsets, but Pro 695 memory, population and I/O limits are Unknown. Confirm the exact OEM CPU support list, BIOS, DIMMs, cooling and power design. The cited documents discuss single-socket workstations; two-socket support is Unknown.
Platform & Compute
The 9955WX combines 16 cores and 32 threads with a 4.5 GHz base clock and 64 MB L3. Its eight-channel processor capability does not make a TRX50 installation eight-channel. Only its tray ordering identity is confirmed; a boxed code must not be inferred. An sTR5 socket does not establish OEM motherboard or BIOS compatibility. AMD lists WRX90, TRX50 and Pro 695 supporting chipsets, but Pro 695 memory, population and I/O limits are Unknown. Confirm the exact OEM CPU support list, BIOS, DIMMs, cooling and power design. The cited documents discuss single-socket workstations; two-socket support is Unknown.
| Model | Ryzen Threadripper PRO 9955WX |
|---|---|
| Architecture | Zen 5 |
| Socket | sTR5 |
| Cores | 16 |
| Threads | 32 |
| Socket configuration | Single-socket workstation |
Performance & Capacity
Maximum boost is up to 5.4 GHz for a single core running a bursty single-threaded workload. Thermal paste, cooling, motherboard design and BIOS, chipset drivers and OS updates affect the result (GD-150). It is not a sustained or all-core boost guarantee. Base clock represents the average effective base frequency of all cores; all-core boost is Unknown.
Performance & Capacity
Maximum boost is up to 5.4 GHz for a single core running a bursty single-threaded workload. Thermal paste, cooling, motherboard design and BIOS, chipset drivers and OS updates affect the result (GD-150). It is not a sustained or all-core boost guarantee. Base clock represents the average effective base frequency of all cores; all-core boost is Unknown.
| Base clock | 4.5 GHz |
|---|---|
| Maximum boost | Up to 5.4 GHz (single core; GD-150 conditions apply) |
| All-core boost | Unknown |
Memory
The processor lists DDR5 RDIMM, eight supported memory channels, ECC enabled by default and up to 6400 MT/s. These are transfer-rate specifications, not controller clock MHz. Actual rate and capacity depend on the selected platform, DIMM type and population, motherboard and BIOS qualification. DPC limits, a DIMM population speed table and absolute memory bandwidth in GB/s are Unknown; no computed bandwidth is presented as a published AMD specification.
Memory
The processor lists DDR5 RDIMM, eight supported memory channels, ECC enabled by default and up to 6400 MT/s. These are transfer-rate specifications, not controller clock MHz. Actual rate and capacity depend on the selected platform, DIMM type and population, motherboard and BIOS qualification. DPC limits, a DIMM population speed table and absolute memory bandwidth in GB/s are Unknown; no computed bandwidth is presented as a published AMD specification.
| Type | DDR5 RDIMM |
|---|---|
| CPU-supported channels | 8 |
| Maximum transfer rate | Up to 6400 MT/s |
| ECC | Default enabled |
| DPC / population rates | Unknown |
| Absolute bandwidth | Unknown |
Platform Resource Limits
WRX90 platform-level limits are eight memory channels, up to 2 TB DDR5 RDIMM and up to 6400 MT/s, with 148 total / 144 usable / 128 Gen5 native PCIe lanes. These are platform ceilings, not validation of a particular motherboard, DIMM kit or slot layout. TRX50 platform-level limits are four memory channels, up to 1 TB DDR5 RDIMM and up to 6400 MT/s, with 92 total / 88 usable / up to 80 Gen5 native PCIe lanes. Do not apply WRX90 resources or feature parity to every TRX50 system.
Platform Resource Limits
WRX90 platform-level limits are eight memory channels, up to 2 TB DDR5 RDIMM and up to 6400 MT/s, with 148 total / 144 usable / 128 Gen5 native PCIe lanes. These are platform ceilings, not validation of a particular motherboard, DIMM kit or slot layout. TRX50 platform-level limits are four memory channels, up to 1 TB DDR5 RDIMM and up to 6400 MT/s, with 92 total / 88 usable / up to 80 Gen5 native PCIe lanes. Do not apply WRX90 resources or feature parity to every TRX50 system.
| WRX90 memory | 8 channels / up to 2 TB / up to 6400 MT/s |
|---|---|
| TRX50 memory | 4 channels / up to 1 TB / up to 6400 MT/s |
| WRX90 lanes | 148 total / 144 usable / 128 Gen5 |
| TRX50 lanes | 92 total / 88 usable / up to 80 Gen5 |
| Pro 695 limits | Unknown |
Expansion
The exact processor page lists PCIe 5.0 and a native lane tuple of 148 total / 144 usable / 128 Gen5. Total, usable and Gen5 lanes are different quantities; not all 148 lanes are Gen5. Board routing, chipset and platform implementation determine the exposed slots and resources.
Expansion
The exact processor page lists PCIe 5.0 and a native lane tuple of 148 total / 144 usable / 128 Gen5. Total, usable and Gen5 lanes are different quantities; not all 148 lanes are Gen5. Board routing, chipset and platform implementation determine the exposed slots and resources.
| PCIe generation | PCIe 5.0 |
|---|---|
| Native total lanes | 148 |
| Native usable lanes | 144 |
| Native Gen5 lanes | 128 |
| Graphics | Discrete graphics card required |
Power & Cooling
Default TDP is 350 W. A configurable TDP interval is Unknown. AMD lists the PIB thermal solution as Not Included and a 95°C maximum operating temperature; neither establishes the suitability of a particular cooler. Exact OEM thermal qualification and complete package contents remain Unknown.
Power & Cooling
Default TDP is 350 W. A configurable TDP interval is Unknown. AMD lists the PIB thermal solution as Not Included and a 95°C maximum operating temperature; neither establishes the suitability of a particular cooler. Exact OEM thermal qualification and complete package contents remain Unknown.
| Default TDP | 350 W |
|---|---|
| cTDP | Unknown |
| PIB thermal solution | Not Included |
| Tjmax | 95°C |
Lifecycle
Current lifecycle is Unknown. Current manufacturing, end-of-life, end-of-sale and commercial availability are Unknown. Accessible product pages and historical planned-availability statements do not establish current stock, regional eligibility or a delivery commitment. AMD’s exact-model Launch Date field is 07/23/25 (2025-07-23).
Lifecycle
Current lifecycle is Unknown. Current manufacturing, end-of-life, end-of-sale and commercial availability are Unknown. Accessible product pages and historical planned-availability statements do not establish current stock, regional eligibility or a delivery commitment. AMD’s exact-model Launch Date field is 07/23/25 (2025-07-23).
| Product-page launch date | 07/23/25 (2025-07-23) |
|---|---|
| Current manufacturing | Unknown |
| End of life | Unknown |
| End of sale | Unknown |
Procurement Identity
Use the base model and listed identifiers when building a multi-model RFQ. The selected PID, destination, configuration and commercial terms are confirmed before a quote is issued.
- Orderable part number
- 100-000000725
- Orderable PID options
- 100-000000725
- Lifecycle / commercial status
- Unknown
- Quote inputs
- PID or base model, quantity, destination and required configuration
Technical Documents
FAQ
Which ordering identities identify Ryzen Threadripper PRO 9955WX?
AMD lists tray OPN 100-000000725 for Ryzen Threadripper PRO 9955WX. Boxed OPN is Unknown: no boxed identifier is established in the cited exact page and catalog. Do not derive one from another model. Package contents and present supply require confirmation.
What distinguishes Ryzen Threadripper PRO 9955WX for workstation selection?
The 9955WX combines 16 cores and 32 threads with a 4.5 GHz base clock and 64 MB L3. Its eight-channel processor capability does not make a TRX50 installation eight-channel. Only its tray ordering identity is confirmed; a boxed code must not be inferred.
Do WRX90 and TRX50 expose the same resources?
WRX90 platform-level limits are eight memory channels, up to 2 TB DDR5 RDIMM and up to 6400 MT/s, with 148 total / 144 usable / 128 Gen5 native PCIe lanes. These are platform ceilings, not validation of a particular motherboard, DIMM kit or slot layout. TRX50 platform-level limits are four memory channels, up to 1 TB DDR5 RDIMM and up to 6400 MT/s, with 92 total / 88 usable / up to 80 Gen5 native PCIe lanes. Do not apply WRX90 resources or feature parity to every TRX50 system. An sTR5 socket does not establish OEM motherboard or BIOS compatibility. AMD lists WRX90, TRX50 and Pro 695 supporting chipsets, but Pro 695 memory, population and I/O limits are Unknown. Confirm the exact OEM CPU support list, BIOS, DIMMs, cooling and power design. The cited documents discuss single-socket workstations; two-socket support is Unknown.
What conditions apply to the memory and clock specifications?
The processor lists DDR5 RDIMM, eight supported memory channels, ECC enabled by default and up to 6400 MT/s. These are transfer-rate specifications, not controller clock MHz. Actual rate and capacity depend on the selected platform, DIMM type and population, motherboard and BIOS qualification. DPC limits, a DIMM population speed table and absolute memory bandwidth in GB/s are Unknown; no computed bandwidth is presented as a published AMD specification. Maximum boost is up to 5.4 GHz for a single core running a bursty single-threaded workload. Thermal paste, cooling, motherboard design and BIOS, chipset drivers and OS updates affect the result (GD-150). It is not a sustained or all-core boost guarantee. Base clock represents the average effective base frequency of all cores; all-core boost is Unknown.
Does the listed socket qualify any motherboard or cooler?
An sTR5 socket does not establish OEM motherboard or BIOS compatibility. AMD lists WRX90, TRX50 and Pro 695 supporting chipsets, but Pro 695 memory, population and I/O limits are Unknown. Confirm the exact OEM CPU support list, BIOS, DIMMs, cooling and power design. The cited documents discuss single-socket workstations; two-socket support is Unknown. Default TDP is 350 W. A configurable TDP interval is Unknown. AMD lists the PIB thermal solution as Not Included and a 95°C maximum operating temperature; neither establishes the suitability of a particular cooler. Exact OEM thermal qualification and complete package contents remain Unknown.
Does the published launch date establish present availability?
AMD’s exact-model Launch Date field is 07/23/25 (2025-07-23). Current lifecycle is Unknown. Current manufacturing, end-of-life, end-of-sale and commercial availability are Unknown. Accessible product pages and historical planned-availability statements do not establish current stock, regional eligibility or a delivery commitment.
RFQ
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Brand
AMD
Model
Ryzen Threadripper PRO 9955WX
Product family
Ryzen Threadripper PRO 9000 WX-Series
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