gear down is enabled by default. to run spec on 15-15-15-35 3600 one needs to load xmp set IF 3600 set vddr 1.35 set geardown disabled and let her eat. This worked on both taichi and giga since abba bios.Originally Posted by bluestang
No need to buy other ram these are the 3600 c15 gtz kit. will pull 3600-3800 fine @1.45v with tight timings. no clue which board your using but ill post up the timings for the giga later tonight.
IIRC the 3900x-3950x due to multiple dies and the way it communicates DR dimms perform better all things equal. On x470 it might not hit 3800 all depends on how good the trace signal are from dram to cpu.
one thing of interest to note and I don't personally take much stock in cinebench being the end all solve all defacto benchmark however I saw maybe a 1 point deviation between tuned and xmp @ 3600. I then ran heaven and time spy and corona and the trend continued. gains or loss could be chalked up easily to bench variation. Obviously due to aida there is a difference but in many apps its hard to measure gains. ( etc time put in to tune doesn't bear much fruit ) I found this very odd considering xmp geardown disabled = 1.5T CR performance hit as well.. I'm going to have to dig deeper and try other game benches to see if it has any impact.
I will have a very hard time convincing lazy gamers/avg joes to spend a few days tuning there memory vs running xmp in a matter of seconds for no measurable gains except in aida and geekbench which they could give 2s less about.
Once I went to 3800 CB gained 40 points so it appears that it may be better to try to set your goals on higher speed vs latency/tight timings when comparing 3600 c14-c15 vs 3800 c16
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