Ryzen Threadripper PRO 3945WX
AMD
PassMark
33,455
MSRP
$1149
AVG Price
$100
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Overview
The Ryzen Threadripper PRO 3945WX is manufactured by AMD. It was released in 14 July 2020 (5 years ago). It is based on the Castle Peak (2020) architecture. It features 12 cores and 24 threads. Base frequency is 4 GHz, with boost up to 4.3 GHz. L3 cache: 64 MB. L2 cache: 512 kB (per core). Built on 7 nm, 12 nm process technology. Socket: sWRX8. Thermal design power (TDP): 280 Watt. Memory support: DDR4-3200. Passmark benchmark score: 33,455 points. Launch price was $499.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Ryzen Threadripper PRO 3945WX
FPS Benchmarks
Predicted performance for Ryzen Threadripper PRO 3945WX across popular games. Tested paired with RTX 4090 to isolate CPU performance.
Baldur's Gate 3
Call of Duty: Black Ops 6
Counter-Strike 2
Cyberpunk 2077
Deadlock
Dota 2
Euro Truck Simulator 2
League of Legends
Left 4 Dead 2
Minecraft
Technical Analysis
Detailed breakdown of Ryzen Threadripper PRO 3945WX specifications and capabilities.
Processing Power
The Ryzen Threadripper PRO 3945WX is a 12-core / 24-thread processor based on the Castle Peak (2020) architecture, manufactured on a 7 nm, 12 nm process node. It reaches a maximum boost clock of 4.3 GHz from a base frequency of 4 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 64 MB of L3 cache, plus 512 kB (per core) of L2 cache and 64 kB (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 33,455, placing it in the High-End performance tier as a Aging generation product. Geekbench 6 single-core (the most relevant metric for gaming FPS) records 1,652, while multi-core reaches 11,500. Cinebench R23 multi-core (measuring sustained rendering workload performance) scores 18,500.
| Specification | Ryzen Threadripper PRO 3945WX |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 12C / 24T |
| Max Boost ClockPeak single-core speed under boost | 4.3 GHz |
| Base ClockGuaranteed minimum operating frequency | 4 GHz |
| ArchitectureCPU microarchitecture design | Castle Peak (2020) |
| Process NodeFabrication technology — smaller = more efficient | 7 nm, 12 nm |
| L3 CacheShared cache — reduces memory latency for all cores | 64 MB |
| L2 CachePer-core fast cache for frequently accessed data | 512 kB (per core) |
| L1 CacheUltra-fast per-core cache | 64 kB (per core) |
| Die SizePhysical silicon area of the processor | 2x 74 mm2 |
| Transistor CountMore transistors = more capabilities | 7,600 million |
| 64-bit Support | Yes |
| Windows 11 Compatible | Yes |
| PassMark ScoreOverall multi-threaded benchmark score | 33,455 |
| Cinebench R23 MultiSustained multi-core rendering performance | 18,500 |
| Geekbench 6 SingleSingle-core performance — most relevant for gaming | 1,652 |
| Geekbench 6 MultiMulti-core parallel workload performance | 11,500 |
Memory & Platform
The Ryzen Threadripper PRO 3945WX fits into the sWRX8 socket and supports PCIe 4.0 with 128 total PCIe lanes for expansion cards and storage. It supports DDR4-3200 memory at speeds up to DDR4-3200 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 2048 GB across 8 channels (dual-channel doubles bandwidth). It supports ECC memory, providing error-correcting capabilities — essential for mission-critical workloads and servers.
| Specification | Ryzen Threadripper PRO 3945WX |
|---|---|
| TypeDesktop or Laptop processor | server |
| SeriesProduct family | AMD Ryzen Threadripper |
| SocketMotherboard socket required | sWRX8 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 4.0 |
| PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion | 128 |
| RAM TypeSupported memory standard | DDR4-3200 |
| Max RAM SpeedMaximum officially supported memory frequency | DDR4-3200 |
| Max RAM CapacityMaximum installable memory | 2048 GB |
| RAM ChannelsDual-channel doubles bandwidth vs single-channel | 8 |
| ECC SupportError-Correcting Code memory — prevents data corruption | Yes |
| Integrated GPUBuilt-in graphics processor | No |
| Compatible ChipsetsMotherboard chipsets that support this CPU | WRX80 |
| Max CPUs in ConfigMulti-socket support for servers | 1 |
Advanced Features
The Ryzen Threadripper PRO 3945WX is primarily designed for Professional Workstation. It features an unlocked multiplier, allowing enthusiasts to overclock beyond stock frequencies for additional performance. Virtualization: AMD-V — enables running virtual machines efficiently (important for development and server workloads). Its primary market competitor is the Xeon w5-2455X.
| Specification | Ryzen Threadripper PRO 3945WX |
|---|---|
| Primary Use CaseIntended workload category | Professional Workstation |
| OverclockingWhether CPU clock can be manually increased | ✅ Unlocked |
| AVX-512Advanced vector instructions for AI/ML workloads | ❌ Not Supported |
| VirtualizationHardware-assisted virtualization technology | AMD-V |
| Direct CompetitorMarket equivalent from rival manufacturer | Xeon w5-2455X |
Power & Cooling
The Ryzen Threadripper PRO 3945WX has a rated TDP (Thermal Design Power) of 280 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately. Recommended cooling: sTRX4 / WRX80 Cooling.
| Specification | Ryzen Threadripper PRO 3945WX |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 280 Watt |
| Included CoolerStock cooler bundled in the box | No |
| Recommended CoolerSuggested aftermarket cooling solution | sTRX4 / WRX80 Cooling |
Value Analysis
At an average price of $100 (MSRP: $1149), the Ryzen Threadripper PRO 3945WX delivers 335 PassMark points per dollar. Performance ranking position: #366 out of all indexed processors.
| Specification | Ryzen Threadripper PRO 3945WX |
|---|---|
| MSRPManufacturer's Suggested Retail Price | $1149 |
| Avg Price (30d)Average market price over the last 30 days | $100 |
| Launch PriceOriginal retail price at launch | $499 |
| Performance RankPosition in overall performance ranking | #366 |
| Release DateLaunch date | 14 July 2020 (5 years ago) |
| Release Year | 2020 |
| DesignerArchitecture designer (e.g. Intel, AMD) | AMD |
| ManufacturerFabrication foundry (e.g. TSMC) | TSMC |
Specifications Reference
Raw spec sheet for quick lookup. The analysis cards above explain what these fields mean in practice.
4 categories
General Information
8 specs
General Information
8 specs
| Type | server |
| Series | AMD Ryzen Threadripper |
| Designer | AMD |
| Launch Price | $499 |
| Manufacturer | TSMC |
| Release Date | 14 July 2020 (5 years ago) |
| Architecture Codename | Castle Peak (2020) |
| Performance Ranking Position | 366 |
Technical Specifications
14 specs
Technical Specifications
14 specs
| Cores | 12 |
| Threads | 24 |
| Die Size | 2x 74 mm2 |
| L1 Cache | 64 kB (per core) |
| L2 Cache | 512 kB (per core) |
| L3 Cache | 64 MB |
| Multiplier | 40 |
| Max Frequency | 4.3 GHz |
| 64-Bit Support | + |
| Base Frequency | 4 GHz |
| Transistor Count | 7,600 million |
| Process Technology | 7 nm, 12 nm |
| Windows 11 Compatible | + |
| Max Case Temperature (TCase) | 95 °C |
Compatibility
4 specs
Compatibility
4 specs
| Socket | sWRX8 |
| PCIe Generation | PCIe 4.0 |
| Power Consumption (TDP) | 280 Watt |
| Max Processors In Config | 1 |
Memory
3 specs
Memory
3 specs
| RAM Types | DDR4-3200 |
| Memory Bandwidth | 204.8 GB/s |
| Max Memory Capacity | 2 TiB |
Similar Performance
Processors with benchmark scores closest to the current hardware, grouped by manufacturer.
Intel (12)
AMD (12)
Our Recommendation for Ryzen Threadripper PRO 3945WX
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
Popular Comparisons
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