Hello,
I am unable to get my RAM to be stable above 2666Mhz with either Performance Boost Overdrive, or Performance Enhancer (Level3). I get frequent random O.S. crashes and have tried everything I can think of including DRAM and SoC voltage increases, Load Line Calibration, Looser RAM timings and various other settings to no avail.
Below is a snippit from a posting about someone with the same problem, but he was able to solve it by finding a UEFI setting in his ASUS motherboard.
I am looking for advice on some UEFI settings that may be similar or other to help me be able to run my RAM at a higher speed while also using PBO or Perf Enhancer. I have a single very high quality 128GB (8x16GB) G.skill 3200Mhz C14 RAM kit (Samsung B-dies) that should be able to function at 2933Mhz, but won't.
I upgraded my CPU recently from a 2950x to a 2990wx and this is when the problems began, so there is probably something to do with the 2990wx memory controller causing this. I have tested each of my RAM modules individually, and they all test good. Also, when I only run 1/2 the RAM (64GB), everything seems to run just fine with both PBO/Enhancer and 2933Mhz RAM.
Following is the snippit about the ASUS Motherboard UEFI settings:
Apr '19
Time for a sunshine update!
Me and a friend spent all evening in and out of BIOS and AIDA64, refusing to accept the 1833mhz clockspeed. Accidentally we stumbled across the ?œDRAM Current Capability (CHA, CHB)??and ??CHC, CHD)??which has a tooltip that says something along the lines of ?œincrease this value if you?™re stresstesting the memory or if you?™re running high density configurations?? This setting can be found inside ?œTweakers paradise??in the BIOS, and so naturally we went ahead and ramped the value up from 100% to 120% and gave 2133mhz a go with 14-14-14-34 timings.
Everything went fine, and we continued to increase incrementally until finally we hit 2933mhz at 14-14-14-34. It is stable enough to continuously run AIDA64 benchmarks, which is all I was hoping for basically. I could do a memtest86 run as well, but honestly I don?™t want to waste a whole day doing that.
Over to the fun part! AIDA64 memory benchmarks running at 2933mhz with 14-14-14-34 timings:
End Snippit
So, if there is anything you can advice me on for this to get it to work, I would be extremely grateful. Please let me know what additional info. you may need from me.
Thank you
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X399 Pro Gaming, 2990wx Threadripper,128GB G.Skill RGB 3200,EVGA 1200 P2,EVGA GTX 1080 Ti x 2 SLI, Enermax Liqtech 360mm,Samsung 970 EVO/960 Pro/850 EVOs, Toshiba x300 HDDs, Thermaltake Chaser MK-1
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