I benchmarked EPYC 7402 and 8259CL, both single and dual-socket. Surprisingly, the diff on a single socket test was significantly higher at around 28-30% than on dual socket systems at around 12-15% all in favour of the EPYC system. But the use case for the 8259CL maybe is totally different today. EPYC ROME prices found its bottom. Scalable Gen2 prices start to come down now. However, if you don't need the super high performance of the CPU but tons of RAM, my choice would still be Scalable Gen2. You get 128GB Optane Gen1PMEMs for about 35-40$ now and you can load your system up into 1TB memory areas very cheaply. Just imagine a 12x cheap 32GB 2666Mhz memory + 12x 128GB Optane PMEM with a perfect 1:4 ratio ... thats theoretically ~1.8TB memory. You can still use 800GB as storage in mixed mode and run caches on it within several namespaces. And all-in-all at 1K US$. Power usage-wise I don't see big differences. Because of my Optane PMEM fetish I still like Scalabel Gen2 a lot for storage and vm's.
