Which is better for 3D rendering?

The 7960X. Its 24 cores and 48 threads finish multithreaded renders faster than the 16-core 7955WX. The 7955WX only wins if your renderer is limited by memory bandwidth.

Which is better for a professional workstation?

The 7955WX. Eight memory channels, PCIe 5.0, and registered ECC support are built for workstation boards and heavy memory workloads.

Do both need the same motherboard socket?

Both use Socket sTR5, but the PRO chip is aimed at workstation boards. Check that your board lists the exact CPU model before buying.

Is the 7960X worth the extra over the 7955WX?

Only if your software uses many cores. If you need memory bandwidth or PCIe lanes, the 7955WX is the better fit regardless of price.

Do either include a cooler?

The 7955WX does not include one. The 7960X listing does not state a cooler, so plan on buying one for either chip given the 350 W TDP.

Can I use ECC memory with both?

The 7960X supports ECC DDR5. The 7955WX is a PRO part built for registered ECC on workstation boards, which is the stronger option for data integrity.

AMD Ryzen Threadripper 7960X vs AMD Ryzen Threadripper PRO 7955WX

Buy the Threadripper 7960X if you want the most cores and threads for rendering, simulation, or code builds. Buy the Threadripper PRO 7955WX if you need eight memory channels, full PCIe 5.0 lanes, and registered ECC memory for a workstation. The 7960X has 24 cores and 48 threads against 16 cores and 32 threads, yet both carry a 350 W TDP and the same 5.3 GHz boost. No prices were given for either chip, so compare live store prices before deciding.

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