Which is better for 3D rendering and video export?

The 5965WX. Its 24 cores and 48 threads and 128 MB L3 cache finish multi-threaded renders faster than the 16-core 5955WX. The gap is largest in CPU-only renders and smallest in GPU-accelerated ones.

Is the 5965WX worth $391 more?

If your work runs for hours on all cores, yes: 50% more cores for about 56% more money at the November 3, 2026 eBay prices. If you mostly do single-threaded or GPU work, the 5955WX at $699 is the better spend.

Do both need the same motherboard?

Yes. Both use socket sWRX8 and need a WRX80-chipset board. Neither has integrated graphics, so you need a discrete card, and both draw 280 W, so plan on a large cooler and a strong power supply.

Which supports ECC memory?

The 5965WX lists ECC support; the 5955WX listing says no ECC. Both run 8 channels of DDR4 up to 3200 MHz. For long simulations where a silent bit flip matters, pick the 5965WX.

Which is better for gaming?

Neither is a gaming chip. The 5955WX is listed as not suitable for gaming, and both are 280 W workstation parts on an expensive platform. A mainstream desktop CPU will game better for far less.

They are equal on paper at 280 W TDP, and the 5965WX lists a 95 °C maximum. Cooling needs are effectively the same, so budget the same large sWRX8 cooler for either.

AMD Ryzen Threadripper PRO 5955WX Processor vs AMD Ryzen Threadripper PRO 5965WX

The 5965WX is the better workstation chip: 24 cores, 48 threads and 128 MB L3 cache against 16 cores, 32 threads and no stated ECC support on the 5955WX. The 5955WX is the value pick at $699 at eBay as of November 3, 2026, versus $1,090 at eBay for the 5965WX. Both need an sWRX8 board on the WRX80 chipset, discrete graphics and a serious cooler at 280 W TDP. Buy the 5965WX if your work scales with cores; buy the 5955WX if it does not.

Today the AMD Ryzen Threadripper PRO 5955WX Processor costs $328.00 less at its best price.

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