Technical Snapshot

The AMD Ryzen™ Threadripper™ PRO 3955WX is a workstation processor for the sWRX8 platform, based on the Castle Peak architecture (TSMC 7nm FinFET). It features 16 cores and 32 threads, with a base frequency of 3.90 GHz and boost up to 4.30 GHz. The CPU has 64 MB of L3 cache with a 280 W TDP. Memory support includes DDR4.

Use Case
Professional workstations
Compatibility
sWRX8 motherboard
Category
Workstation Processor — Ryzen Threadripper PRO (Ryzen Threadripper PRO 3000 WX-Series)
AMD Ryzen™ Threadripper™ PRO 3955WX
AMD PRODUCT
AMD

AMD Ryzen™ Threadripper™ PRO 3955WX (100-100000167WOF)

16-Core 32-Thread @ 4.30 GHz | sWRX8

Total CPU cores. Locked multiplier.
Cores16
Maximum boost clock frequency under AMD Precision Boost.
Max Boost4.30 GHz
L3 cache for fast data access during gaming and compute workloads.
L3 Cache64 MB
Default TDP (280 W). Ensure adequate cooling for sustained boost operation.
TDP280W
MPN100-100000167WOF
PackageBox
CategoryWorkstation Processors
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Full Specifications

Manufacturer-verified specifications (Manufacturer-Verified (MV-1) · Source: AMD.com)

Processor Architecture
FamilyRyzen Threadripper PRO
SeriesRyzen Threadripper PRO 3000 WX-Series
CodenameCastle Peak
Cores / Threads16 / 32
LithographyTSMC 7nm FinFET
SocketsWRX8
Performance
Base Clock3.90 GHz
Max Boost Clock4.30 GHz
UnlockedNo
Cache
L3 Cache64 MB
L2 Cache8 MB
L1 Cache1024 KB
Memory
Memory TypeDDR4
Channels8
ECC MemoryYes
Platform
Scalability1S
Thermal & Power
TDP280 W
Connectivity
PCIe Version4.0
Product Information
Launch Date7/14/2020
Ordering Code100-100000167WOF
PackageBox

Support & Downloads

Latest Drivers & SoftwareVisit AMD for the latest updates
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AMD Ryzen™ Threadripper™ PRO 3955WX DocumentationPDF · Installation guide and specifications
AMD Support →
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Frequently Asked Questions

What socket does the AMD Ryzen™ Threadripper™ PRO 3955WX use?

The AMD Ryzen™ Threadripper™ PRO 3955WX uses the sWRX8 socket.

What memory does the AMD Ryzen™ Threadripper™ PRO 3955WX support?

The AMD Ryzen™ Threadripper™ PRO 3955WX supports DDR4.

How many cores and threads does the AMD Ryzen™ Threadripper™ PRO 3955WX have?

The AMD Ryzen™ Threadripper™ PRO 3955WX has 16 cores and 32 threads with a max boost clock of 4.30 GHz.

What is the TDP of the AMD Ryzen™ Threadripper™ PRO 3955WX?

The AMD Ryzen™ Threadripper™ PRO 3955WX has a default TDP of 280 W.

Is the AMD Ryzen™ Threadripper™ PRO 3955WX unlocked for overclocking?

No, the AMD Ryzen™ Threadripper™ PRO 3955WX is locked and does not support manual overclocking.

JSON-LD Structured Data — Product + FAQ + Breadcrumb 
Product: AMD Ryzen™ Threadripper™ PRO 3955WX
MPN: 100-100000167WOF
Schemas: Product + BreadcrumbList
Properties: 13 additionalProperty entries