Question Memory-CPU tradeoff

[bhelhokie]

If you are to pick a CPU-memory pair at a similar price point, which would you pick?

Ryzen 7700X + 64GB DDR5-6000 CAS 30 vs. Ryzen 9700X + 64GB DDR5-5600 CAS 46

The PC is mainly for scientific/AI computing (no gaming). Seeing the Zen5's gain in the Numpy benchmark, maybe it's a no brainer to go with zen 5...

If you remove my particular interest, what is the general rule of thumb? Faster memory only after you max out CPU w/in your budget?

Thanks!

 

[JackMDS]

The 9700x seems to be few % better.

Please click the green human to continue - UserBenchmark

 

[Ken g6]

Depends on the computing. If it uses AVX-512, get the 9700X.

For most AI, it uses CUDA, so you'd want a used RTX 3090 (for the 24GB VRAM), or 4060ti 16GB if you can't afford that, or 3060 12GB if you can't afford that, and a "potato CPU" as I've heard it described. (Meaning the CPU doesn't matter.) But 64GB RAM would still be good.

 

[bhelhokie]

Thanks for responses!

> Depends on the computing. If it uses AVX-512, get the 9700X.

Yeah, I'm running a synthesizer on CPU to feed neural nets (to be trained on GPU).

That being said, perhaps I should've posted this on the CPU forum as my primary question was if spending more on better EXPO-spec'ed (?) memory is worth downgrading the CPU spec. (Did a bit more research since I posted the OP, and it appears the answer is resounding NO.)