Which is faster for rendering and simulation?

The 7975WX. It has the same 32 cores and 64 threads but Zen 4 cores at up to 5.3 GHz versus 4.5 GHz, plus DDR5 memory bandwidth.

Can I put the 7975WX in an sWRX8 board?

No. The 7975WX uses Socket sTR5 and the 5975WX uses sWRX8. They are not interchangeable, and each needs its own motherboard and memory generation.

Is the 7975WX worth the extra over the 5975WX?

For a new build, yes, if the price gap is reasonable: you get PCIe 5.0, DDR5 and higher clocks. If you already own an sWRX8 board and DDR4, the 5975WX avoids a full platform swap.

Do either come with a cooler?

The 7975WX listing says the thermal solution is not included. No cooler is stated for the 5975WX either, so plan on a Threadripper-class cooler for both, and a stronger one for the 350 W chip.

How much memory can each take?

Both support up to 2 TB with ECC. The 5975WX uses DDR4 at 3200 MHz; the 7975WX uses DDR5 at up to 5200 MT/s.

The 5975WX at 280 W TDP versus 350 W for the 7975WX. Both are rated to 95 °C maximum.

AMD Ryzen Threadripper PRO 5975WX vs AMD Ryzen Threadripper Pro 7975WX

The 7975WX is the newer chip and the better buy for a new workstation build: same 32 cores and 64 threads, but Zen 4, PCIe 5.0, DDR5 and a 5.3 GHz boost versus 4.5 GHz. The 5975WX only makes sense if you already own an sWRX8 board and DDR4. On price, the 7975WX has been listed as low as $1,899.99 at American Tech Depot as of November 3, 2026, against a high of $3,592.99 on November 6, 2026; no price was given for the 5975WX, so check its current store prices before deciding.

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