I just gave up and built an AM4 system with a 3090 because I had 128G of ddr4 udimms on hand the whole build was for less than just the memory would have cost for an AM5/ddr5 build.

Really wish that I could replace my old skylake-x system but even ddr4 rdimms for an older xeon are crazy now let alone ddr5. Unfortunately I need slots for 3xTitan V's for the 7.450 TFLOPS each of FP64. Even the 5090 only does 1.637 TFLOPS for FP64, so just hopping that old system keeps running.