AMD Ryzen Threadripper PRO 3955WX vs AMD Ryzen Threadripper PRO 7955WX
The 7955WX is the better chip for almost every buyer: it is a newer Zen 4 part on Socket sTR5 with DDR5, PCIe 5.0 and much higher clocks. The 3955WX is only worth considering if you already own an sWRX8 board and DDR4 and want to save money. No current prices were provided for either chip, so compare live store prices before deciding.
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AMD Ryzen Threadripper PRO 3955WX
AMD Ryzen Threadripper PRO 3955WX 16-Core 3.9GHz Processor
Choose the 3955WX if you already have an sWRX8 motherboard and DDR4 memory and want to reuse them.
- Runs cooler than the 7955WX at 280 W TDP
- Works with existing sWRX8 boards and cheaper DDR4
- 16 cores and 32 threads still handle heavy multithreaded work
- Supports overclocking
What separates them
| AMD Ryzen Threadripper PRO 3955WX | AMD Ryzen Threadripper PRO 7955WX | |
|---|---|---|
| Socket | sWRX8 | sTR5 |
| Memory type | DDR4 at 3200 MHz | DDR5 at up to 5200 MT/s |
| Base clock | 3.9 GHz | 4.5 GHz |
| Boost clock | 4.3 GHz | 5.3 GHz |
| Cores / threads | 16 / 32 | 16 / 32 |
| TDP | 280 W | 350 W |
| PCIe | PCIe 4.0 (platform) | PCIe 5.0 |
| Process node | Zen 2 (7 nm class) | Zen 4 (5 nm) |
Price history
- AMD Ryzen Threadripper PRO 3955WX: lowest $300.50 on Nov 3 at Newegg.com.
- AMD Ryzen Threadripper PRO 7955WX: lowest $1,592.00 on Nov 3 at DirectDial.
Prices at every store
AMD Ryzen Threadripper PRO 3955WX
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AMD Ryzen Threadripper PRO 7955WX
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Specs compared
| Spec | AMD Ryzen Threadripper PRO 3955WX | AMD Ryzen Threadripper PRO 7955WX |
|---|---|---|
| Socket Type | sWRX8, Socket sWRX8 | Socket sTR5 |
| RAM Type | DDR4 | DDR5 |
| RAM Speed | 3200 MHz | Up to 5200 MT/s |
| Integrated Graphics | No | No |
| Manufacturer | AMD | AMD |
| Memory Type | DDR4 | DDR5 |
| Memory Speed | 3200 MHz | Up to 5200 MT/s |
| Memory Channel Support | Octa-channel | 8 |
| Clock Speed | 3.9 GHz | 4.50 GHz |
| Number Of Cores | 16 | 16 |
What reviewers say
AMD Ryzen Threadripper PRO 3955WX
- 4.7 / 512 ratings
Ratings are strong at 4.7 out of 5 from 12 ratings, and owners treat it as a solid workstation chip. The main reservations are platform cost and heat rather than performance.
- PerformancePraisedOwners report strong results in multi-threaded rendering and encoding tasks.
- HeatCriticisedThe 280 W TDP means it runs hot and needs a large cooler.
Questions and answers
- Which is better for 3D rendering?
- The 7955WX. Same 16 cores, but Zen 4 cores are faster per clock and it boosts to 5.3 GHz, so renders finish sooner.
- Can I put the 7955WX in an sWRX8 motherboard?
- No. The 7955WX uses Socket sTR5 and the 3955WX uses sWRX8. They are not interchangeable.
- Is the 3955WX still worth buying?
- Only if you already own an sWRX8 board and DDR4. For a new build, the 7955WX platform is the better long-term buy.
- Which runs cooler?
- The 3955WX at 280 W TDP. The 7955WX is rated 350 W and needs a stronger cooler.
- Do either have integrated graphics?
- No. Both need a discrete graphics card.
- Which lasts longer before needing an upgrade?
- The 7955WX. DDR5 and PCIe 5.0 keep it relevant longer than the DDR4, PCIe 4.0 3955WX platform.
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