Hmm. I'll have to look into this. CPU-Z sometimes reports wrong values, but I don't know the true impact of ring cache on DRAM either. I may have to spend a few days to benchmark different ones. I vaguely remember testing it with DDR5-6000, and got similar results using ring x38 vs auto when during the review of the ASUS Z690 Hero motherboard. That isn't real evidence to give a clear answer though.
The Cache should throttle and boost similar to the Cpu during different loads. This may be for or against constant figures, but always a stock run then maybe some user setup for fixed figures for some comparisons. It is after in the past a common place to overclock the cache to boost that memory performance, something that may be interesting to some people.
I'm not entirely sure the cache frequency of all the 12th gen processors. They may vary from part to part as well. Something that can be noted during your testing. For example a 12600K might have a lower cache frequency at stock than a 12900K at stock.
Just some food for thoughts
This only proves DDR5 RAM is still a waste of money. Still too slow, still too expensive, still no new DRAM fabs till 2024. I know there are always growing pains for a new DDR standard, but DDR5 seems at least a year too early. Who knows how well these boards will even work with the good stuff when it finally comes out.
Like DDR4 was cheap when released? DDR3? Shit I remember DDR2 kits like Corsair Dominators, back then over 250$. Which back then, was a quite a bit of money. Inflation, yeah. But also wages have increase too since that time....
A little reality check for you. My G.Skill 4267mhz B-Die kit was over 350$. It was a total of only 16gb 2x8 and didn't have unbuffered ECC chip installed. DDR5 the standard is 32gb and comes equipped with unbuffered ECC on all kits.
My current DDR5 kit is 2x8gb and was well under 200$. And at 5800mhz, it's clobbering just about all ddr4 b-die benchmarks.
Click the link at the OP, all the DDR4 memory was at the bottom of the benchmark lists, where system memory would make a difference.
(Sorry for venting, just tired of reading that ddr5 is "slow" but there isn't really any evidence of that. It's like saying DDR2 is still fast....)
Dominator Platinum PCB is a custom PCB designed by Corsair.
What you're referring to is the JEDEC raw card version. However there is no JEDEC UDIMM raw card design for 10 layer PCBs. While component location may be the same as the raw card that does not mean that the copper layers underneath are the same.
Thank you for that clarification !