hello, I was wondering about the highest rated xmp kits, lets say I would buy a 4600-4800mhz c18 kit from g.skill or similar to use on a z390 (or z490 board later this year) ,
how likely is it that these type of kits actually will run 100% stable at XMP profile?
is it true that one would absolutely need a very highend motherboard as well, in the class of EVGA dark and Asus maximus XI gene and so on to even consider these kits?
or would perhaps other lower cost mATX / ITX boards with only 2 dimm slots perhaps also be able to handle the highest rated kits?
how much does the CPU factor in? is it common to run these speeds with a 9700k/9900k without issues as long as the motherboard can handle it, and is there any difference between 9900k and 9700k in that case?
(lets assume we will not overclock the cpu and only focus on getting the RAM to run at fastest possible speed)
I have looked at some QVL lists both from memory vendors and motherboard vendors, but how much can you "trust" those when it comes to the absolute highest speeds so to speak?
and lastly a question which seems hard to get a clear answer on after some research, if you wanted the absolutely highest performance possible in CPU/RAM bottlenecked games (1080p, low quality gfx esports type games for the highest possible framerates, with for example a 2080ti) what is generally the best option out of these do you think?:
A) 2x8gb single rank at super high 4600+ frequency and try to optimize timings a bit (probably cant tweak timings much more at 4600-4800mhz than what the XMP already does perhaps?)
B) 2x16 gb dual rank or 4x4gb single rank running as dual rank, at as high frequency and optimized timings possible/allowed by motherboard/cpu/etc (what is realistic frequency here?)
C) 2x8gb single rank but instead of going for highest frequency, go for ultra low timings at ~4000-4100 mhz? something like 4000mhz cl11-12-12-28-1T and so on?
spent some time today researching dual rank benchmarks and my questions above, but still hard to reach conclusive answer!
it seems obvious that there are great benefits to dual rank with the interleaving, but the drawbacks seem to be lower max frequency and looser timings, so its hard to say where the sweet spot is, and if single rank at super high frequency/tight timings is stronger choice for gaming than dual rank with a bit lower frequency and looser timings and so on and so on :/
if I had to pick something now, it would seem that for gaming at the absolute top end of performance, it would be with ultra low timings at as high possible frequency as possible, looking at something like 4000-4100 mhz cl11-12 basically ?
excuse me if a bit messy post
would appreciate any insight and feedback on this!