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    AMD Ryzen Threadripper PRO 9955WX - Ryzen Threadripper PRO 9000 WX-Series 16-Core 4.5 GHz Socket sTR5 Processor -

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    • 350W
    • None Integrated Graphics
    • Cooling device not included - Processor Only
    • TSMC 4nm FinFET
    Please note that this product is non-returnable and non-refundable.
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    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    AMD Ryzen™ Threadripper™ processors deliver battle-tested performance and capability to enable artists, architects, and engineers with the ability to get more done in less time.

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Accelerate Your Vision and Advance Demanding Workloads

    When deadlines are non-negotiable, professional artists, architects, and engineers need a workstation that excels. AMD Ryzen™ Threadripper™ PRO processors offer a highly expandable platform with unmatched performance, enterprise-class security, and exceptional manageability. Empower your team like never before.

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Increase Productivity

    Save up to 27 minutes for every hour of productivity on the fastest workstation processors on the market.1

    Designed for artists, architects, and engineers, these processors excel in both multi-threaded and lightly threaded workflows, offering exceptional power, performance, and platform expandability built on the leading Zen 4 architecture.

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Create Without Restraint

    Fast-track creative workflows with the performance, value, and reliability of next-gen professional GPUs and high-speed storage devices.

    AMD Ryzen Threadripper processors support a range of advanced workstation configurations to meet the needs of cutting-edge visual work.

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Accelerate AI Workflows

    Enhance your engineering, creative, scientific and development workfloads and avoid paying expensive cloud subscription costs, with on-device genAI like LLM and diffusion models.

    From conception to final production, integrate advanced AI tools into every phase of your project.

    Advancing Productivity Across Industries

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Architecture, Engineering, & Construction

    Accelerate architectural workflows like editing point clouds, rendering and virtual reality.

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Design & Manufacturing

    Reduce simulation and render times while the system stays productive.

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Media & Entertainment

    Tear through complex rendering and VFX workloads while increasing creative iterations.

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Software & Sciences

    Reduce compile times and boost scientific discovery with rapid simulation and analysis.

    Deploy Windows Enterprise Autopilot up to 41% faster2

    All AMD Ryzen PRO processors offer 18 months of planned software stability, 24 months of planned availability, and an enhanced platform validation process to ensure enterprise-grade quality and long-term stability.

    AMD Ryzen™ Threadripper™ Processors for Desktop Workstations

    Choose the AMD Threadripper Platform to Fit Your Needs

    Choose the AMD TRX50 chipset for focused, full spectrum performance with up to 80 PCIe lanes and 4-channel memory and choose the AMD WRX90 chipset for the ultimate PCIe® 5.0 expandability, 8-channel memory, and enterprise class manageability and security.

    AMD WRX90 Platform AMD TRX50 Platform
    PRO Manageability Yes
    PRO Security Features Yes
    Overclocking Support Yes (not enabled on OEM systems) Yes
    PCIe® Lanes (Total/Usable) 148/144­ (w/ up to 128 PCIe® 5.0) 92/88­ (w/ up to 48 PCIe® 5.0)
    Socket sTR5 sTR5
    PCIe® 5.0 Lanes 128 80
    Memory Configuration 8-Channel, up to 2TB (overclockable RDIMM) 4-Channel, up to 1TB (overclockable RDIMM)
    Processor Support AMD Ryzen Threadripper PRO 9000 WX-Series Processors AMD Ryzen Threadripper 9000 Series Processors

    Comparison

    Ryzen Threadripper PRO 9000 WX-Series

    Name Graphics Model # of CPU Cores # of Threads Max. Boost Clock3 Base Clock4 Thermal Solution (PIB) Default TDP
    AMD Ryzen™ Threadripper™ PRO 9995WX Discrete Graphics Card Required 96 192 Up to 5.4 GHz 2.5 GHz Not Included 350W
    AMD Ryzen™ Threadripper™ PRO 9985WX Discrete Graphics Card Required 64 128 Up to 5.4 GHz 3.2 GHz Not Included 350W
    AMD Ryzen™ Threadripper™ PRO 9975WX Discrete Graphics Card Required 32 64 Up to 5.4 GHz 4 GHz Not Included 350W
    AMD Ryzen™ Threadripper™ PRO 9965WX Discrete Graphics Card Required 24 48 Up to 5.4 GHz 4.2 GHz Not Included 350W
    AMD Ryzen™ Threadripper™ PRO 9955WX Discrete Graphics Card Required 16 32 Up to 5.4 GHz 4.5 GHz Not Included 350W
    AMD Ryzen™ Threadripper™ PRO 9945WX Discrete Graphics Card Required 12 24 Up to 5.4 GHz 4.7 GHz Not Included 350W

    Ryzen Threadripper 9000 Series

    Name Graphics Model # of CPU Cores # of Threads Max. Boost Clock3 Base Clock4 Thermal Solution (PIB) Default TDP
    AMD Ryzen™ Threadripper™ 9980X Discrete Graphics Card Required 64 128 Up to 5.4 GHz 3.2 GHz Not Included 350W
    AMD Ryzen™ Threadripper™ 9970X Discrete Graphics Card Required 32 64 Up to 5.4 GHz 4 GHz Not Included 350W
    AMD Ryzen™ Threadripper™ 9960X Discrete Graphics Card Required 24 48 Up to 5.4 GHz 4.2 GHz Not Included 350W
    Notes:

    1. Based on AMD performance lab testing as of July, 2023, using the SPEC Workstation 3.1 Media and Entertainment metric, SPEC Workstation 3.1 Product Development PTC Creo subset metric, SPEC Workstation 3.1 Life Sciences overall metric, SPEC Workstation 3.1 Financial Services overall metric, SPEC Workstation 3.1 Energy overall metric, the V-Ray CPU performance benchmark, the PugetBench for Adobe AfterEffects v0.95.7 benchmark, the PugetBench for Premiere Pro v0.98.0 benchmark, the SPECapc Maya 2023 CPU composite metric, the Unreal Engine 5.1 compilation benchmark, the Chromium Compilation 115.0.5740 benchmark, the SPECapc for Solidworks 2022 CPU composite metric, the Keyshot CPU rendering benchmark, the Puget Metashape total Processing time (Rock Model) benchmark, and the Corona rendering (Rays/Sec) benchmark, Blender Rendering Benchmark, to compare the performance of AMD Ryzen Threadripper PRO 5995WX, 5975WX, 5965WX, 5955WX, 5945WX processors in reference systems configured with 8x64GB DDR4, NVIDIA Quadro RTX A5000, 1TB SSD, Win 11 vs. a similarly configured BOXX workstation with Intel Xeon w9-3495X, w9-3475X, w7-3455X, w5-3435X, w5-3425X, w7-2495X, w7-2465X processors Workstation manufacturers may vary configurations, yielding different results. Results may vary. CGP-45

    2. Based on AMD performance lab testing as of August, 2023, using the SPECapc for Solidworks 2022 CPU composite metric to compare the performance of the full stack of AMD Ryzen Threadripper PRO 7000 WX-Series processors and the AMD 5965WX and 5955WX processors in a reference system configured with 8x32GB DDR5, NVIDIA Quadro RTX A5000 graphics, 1TB SSD, Win 11 vs.similarly configured BOXX workstations with the full stack of Intel Xeon w-3400 series and and the Intel w7-2495X and the Intel w7-2465X processors. Workstation manufacturers may vary configurations, yielding different results. Results may vary. SPP-15

    3. Max boost for AMD processors is the maximum frequency achievable by a single core on the processor running a bursty single-threaded workload. Max boost will vary based on several factors, including, but not limited to: thermal paste; system cooling; motherboard design and BIOS; the latest AMD chipset driver; and the latest OS updates. GD-150

    4. Represents the average effective base frequency of all cores.

    AMD RYZEN THREADRIPPER PRO 9955 16 CORES 32 350 SP6 80MB 5400

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Limited Warranty period (parts): 3 years
    • Limited Warranty period (labor): 3 years
    • Read full details

    Return Policies

    • Return for refund within: This item is Final Sale
    • Return for replacement within: This item is Final Sale
    • This item is covered by Newegg.com's Final Sale Return Policy.
    • Read full return policy for details.

    Manufacturer Contact Info

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    The AMD Ryzen Threadripper PRO 9955WX is a 16-core, 32-thread sTR5 workstation processor with boost speeds up to 5.4 GHz, suited to professionals running demanding creative, engineering, software-development, or scientific workloads.

    Recommended For

    • Workstation builders running several GPUs, accelerators, or high-speed storage devices who need a platform with abundant PCIe connectivity for AI or other GPU-focused compute. Community build discussions describe this as a reason to choose the 9955WX over a mainstream desktop platform.
    • Creative professionals who combine CPU-sensitive tasks such as Photoshop or After Effects work with workstation needs; Puget Systems found the 9955WX especially competitive in Photoshop and among the faster 9000 WX chips in After Effects.
    • Game developers and software teams who regularly compile large codebases or shaders on a workstation; Puget Systems’ tests show the 16-core 9955WX performing well in code compilation and shader compilation within the Threadripper PRO 9000 WX lineup.
    • GPU-focused local AI users who want a workstation CPU and expansion platform for multiple GPUs, while keeping CPU core count secondary to GPU capacity. Community discussions identify this as a potential fit when inference is primarily GPU-driven.

    Real-World Use Scenarios

    • A 3D artist rendering scenes with CPU-based engines such as Blender or V-Ray can use the 9955WX for production renders and previews; it handles these workloads, though higher-core Threadripper PRO models finish heavily parallel CPU renders faster.
    • A motion-graphics artist working in After Effects can edit compositions that mix 2D and 3D tasks; testing found the 9955WX performed similarly to other 9000 WX models overall, with particularly strong results in the tested 3D workload.
    • A developer building a workstation for local AI inference or fine-tuning can pair the 9955WX with suitable discrete GPUs and storage; the processor supports a workstation platform aimed at multi-GPU configurations, but AI performance depends heavily on the GPUs and the chosen workload.
    • A video editor handling mixed editing and effects work in Premiere Pro or DaVinci Resolve can build around the 9955WX, especially when the system also needs workstation-class expansion; results vary by codec and effect, and GPU choice matters because many editing tasks are GPU-driven.

    Spec Summary

    AttributeValue
    Best ForWorkstation builds and parallel workloads that can use 16 cores and 32 threads
    Cores And Threads16 cores and 32 threads
    Clock Speeds4.5 GHz base frequency, up to 5.4 GHz max turbo
    Cache And TDP1280 KB L1, 16 MB L2, and 64 MB L3 cache; 350 W TDP
    Socket And PlatformSocket sTR5; compatible with AMD Pro 695, TRX50, and WRX90 chipsets
    Memory ConfigurationDDR5-6400, 8 memory channels, with ECC memory support
    PCIe And ExpansionPCIe 5.0; up to 148 total lanes, with 144 usable and 128 PCIe 5.0 lanes
    Graphics And CoolingNo integrated graphics; cooling device not included (processor only)
    Architecture And FeaturesTSMC 4 nm FinFET manufacturing process, 64-bit instruction set, and support for AMD EXPO, AMD PRO, and AMD Ryzen technologies
    Operating System SupportWindows 11 64-bit, Windows 10 64-bit, RHEL x86 64-bit, and Ubuntu x86 64-bit
    Model IdentifiersAMD Ryzen Threadripper PRO 9955WX, Ryzen Threadripper PRO 9000 WX-Series; model 100-100000725WOF

    Reference Q&A

    Q: Should I get the Threadripper PRO 9955WX or 9965WX?

    A: Choose the 9955WX for a 16-core workstation where its 4.5 GHz base clock and lower product-tier cost fit the workload. Choose the 9965WX when CPU-heavy parallel tasks can use its 24 cores and 48 threads; both have a 5.4 GHz maximum boost and 350W TDP. Benchmarks vary by application, so check results for your specific software.

    Q: Is the Threadripper PRO 9955WX or regular Threadripper 9960X a better fit?

    A: The 9960X has 24 cores and 48 threads, compared with 16 cores and 32 threads in the 9955WX, so it may suit workloads that benefit from more CPU cores. The 9955WX is the PRO-series option: on a WRX90 motherboard, it supports eight-channel memory and up to 128 PCIe 5.0 lanes, compared with the 9960X’s four-channel memory and up to 80 PCIe 5.0 lanes. Choose based on your expansion and memory-bandwidth needs; the 9955WX does not provide those WRX90 limits when used on TRX50.

    Q: Should I upgrade from a Threadripper PRO 7955WX to the 9955WX?

    A: Both are 16-core, 32-thread, 350W sTR5 processors. The 9955WX is the newer Zen 5 model, with a maximum boost up to 5.4 GHz versus up to 5.3 GHz for the 7955WX. It is a clearer choice for a new build or a workload that benefits from measured newer-generation performance; for an existing 7955WX system, compare benchmarks for your applications before upgrading and verify motherboard BIOS support.

    Q: Is the Threadripper PRO 9955WX enough, or should I step up to the 9975WX?

    A: The 9955WX has 16 cores and 32 threads; the 9975WX doubles that to 32 cores and 64 threads and has twice the L3 cache. Choose the 9975WX when rendering, compiling, simulation, or other sustained parallel workloads can use the extra cores. The 9955WX has a higher base clock—4.5 GHz versus 4.0 GHz—and both list a maximum boost up to 5.4 GHz and a 350W TDP.

    Q: What kind of work is the Ryzen Threadripper PRO 9955WX suited for?

    A: It is aimed at workstation tasks such as rendering, simulation, software compilation, and other professional workloads that can use multiple CPU cores. Its 16 cores and 32 threads can also support lightly threaded tasks, but this is a desktop processor for a workstation build—not a travel device.

    Q: Does the Ryzen Threadripper PRO 9955WX include a cooler or integrated graphics?

    A: No. The processor-only package does not include a cooling device, and the CPU has no integrated graphics. Plan for a compatible cooling solution and a separate graphics card.

    Q: Will the Ryzen Threadripper PRO 9955WX work with my existing motherboard?

    A: Only if the motherboard uses Socket sTR5 and supports this processor. Check the motherboard’s CPU support list and BIOS requirements before buying; the product listing names AMD Pro 695, TRX50, and WRX90 chipsets as compatible.

    Q: What memory does the Ryzen Threadripper PRO 9955WX support?

    A: It supports DDR5 memory, has eight memory channels, and supports ECC memory. Confirm the motherboard’s supported memory type, speed, and configuration when choosing RAM.

    Q: Does the 9955WX make sense over a high-end desktop CPU for a multi-GPU workstation?

    A: It may suit builds that need workstation-class PCIe expansion: the supplied specifications list up to 148 PCIe lanes and eight-channel ECC memory support. For a system with few expansion needs, the added workstation platform may be unnecessary; a Reddit discussion also notes the extra platform costs and argues that the choice depends on how many devices need bandwidth.

    Q: Is the 9955WX suitable for a local AI or machine-learning workstation?

    A: It can serve as the CPU in an AI workstation, and a Reddit build discussion uses it for local LLM inference and simple ML training. The CPU has 16 cores and 32 threads, but that discussion emphasizes GPU use; suitability depends on the workload and the accelerators, memory, and software paired with it.

    Q: What should I plan for when choosing cooling for a 9955WX build?

    A: Plan for a compatible sTR5 cooling solution: the supplied product information lists a 350W TDP and says a cooler is not included. A Reddit build discussion specifically raises cooler capacity and reliability as considerations for a 9955WX system.