I managed to get a good price on two 128gb ram stick kits, Gskill F5-6400J3644F64GX2-TZ5RK .
https://www.newegg.com/global/sg-en/g-skill-trident-z5-neo-series-128gb-2-x-64gb-ddr5-6400-pc5-51200-cas-latency-cl36-desktop-memory-black/p/N82E16820374770
I know both kits will not likely hit 6000 cl36 256gb like the 4x128gb kit that gskill sells which they don't sell in my country, plus Asus has worse 4 dim performance than msi. I just want to know how I can improve my settings more. I use the 256gb for ai models, etc.
This kit has samsung memory.
Right now after playing around with the kit for the whole day I have managed to get it working with 256gb at 5000 mhz 30cl stable with memory context restore(MCR). The MCR seems to not be possible even with the 4x version of this kit. If i want to disable MCR I can get 5400 mhz at 32 cl but without MCR it takes like 40secs to train everytime I reboot the computer which is too ridiculous.
The current settings I have, I am kinda statisfied with as I can get 77ns latency with aida 64 which was near my 66ns latency of my previous 48gb ddr5 kit. If i run the kits at 6000 mhz cl36 Expo the latency i get 96ns latency but ofc its unstable.
The picture below is my current settings. I have tested positive with y-cruncher 222gb and TM5(2 cycles), I don't have karhu but maybe I'll get it later. X870e hero running the latest 1.2.0.3g agesa with 1715 bios. I left everything at auto execpt for 5000 mhz, 1.25 vdd and vddq and 30 tcl and trefi.
I have also active cooling using a 12 inch case fan to cool the ram modules on a gooseneck.
if your curious about the temps without the active cooling temperatures were reaching 65++ celcius with active its around 53 celcius. I tried increasing voltage to 1.35v and 1.4v but this Samsung memory doesn't like it and becomes unstable. I haven't played around with the resistances so maybe there's room for more.