Which is better for video rendering?

The 3970X. Its 32 cores and 64 threads finish multi-threaded renders faster than the 16-core 3955WX, and the 128 MB cache helps too.

Which is better for a memory-hungry workstation?

The 3955WX. The sWRX8 platform gives 8-channel DDR4 with ECC and registered DIMM support, which the 3970X's 4-channel TRX40 platform does not.

Is the 3955WX worth it at $159?

At $159 at Distritech as of November 3 it is cheap for a 16-core sWRX8 chip, but budget for an expensive WRX80 board and cooler. Compare it against the 3970X's current price before deciding.

Do they use the same motherboard?

No. The 3955WX needs an sWRX8 board (WRX80 chipset); the 3970X needs an sTRX4 board (TRX40 chipset). They are not interchangeable.

Both are rated at 280 W TDP, so cooling needs are similar. The 3955WX's higher clocks mean it can run hotter under light loads, while the 3970X spreads heat across more cores under full load.

Which lasts longer before needing an upgrade?

The 3970X's 32 cores age better for compute-heavy work. The 3955WX's advantage is platform headroom: 8-channel memory and 128 PCIe lanes leave more room to expand.

AMD Ryzen Threadripper PRO 3955WX vs AMD Ryzen Threadripper 3970X

Both are Zen 2 Threadripper chips with 280 W TDP and unlocked multipliers, so the choice comes down to cores versus platform. The 3970X gives you 32 cores and 64 threads for heavy rendering and compile work; the 3955WX gives you 16 cores but the PRO platform with 8-channel memory and full PCIe lanes on sWRX8 boards. The 3955WX is listed at $159 at Distritech as of November 3; no price was given for the 3970X, so check its current store prices before deciding.

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