DFI UT X58-T3EH8 continued - Part 2

[cstkl1]

Could you elaborate on this? What do you mean you need to run lower mem skews?

well since i am using elpida hypers
the best bios is 04/28

the mem skews are based on bootup clocks
and the vtt is corresponds to it

example for 2050 CL7 to get RTL 53 on Channel A u need to use bootup bclk 185
for set bclk 205
this is tricky as its borderline.
bootup bclk is between -20 to -5 of set bclk. vtt is corresponding to this
so what vtt or dram dq vref i should set??
this takes time and need to do a lot of testing
but overall its either channel dqvref Channel A + 3.0% with cmd Vref + 120 or -2.5% with cmd vref 110
this will pass memtest86+ but will have some i/o bsods aka nvidia/raid etc on boot ramdomly. so channel B and C need to be set also. to get optimal rtl of 53/56/58 at vtt 1.44v set.

for X58 u need to always test on different boots. cold boot, hot boot. resets etc.

testing of vtt. easy set bootup to 185 for the above with no adjustments and lower vdimm.
for me i need 1.65v which is proven by prime. so i set 1.635.
u can see errors in test 2. which correct vtt will reduce it.

in REx 775 mobo's we tested the same way.undervolting certain voltages to find the others. thats how u test with memtest86+ 3.0. previous memtest versions was not very sensitive. this is especially to mem skews and rtl's of the uncore.

look at everybody overclocking its so boring all high cpu clocks with slow mem ..
progress on x58 overclocking would be with higher cpu clock with high mem speeds
until to date only one person has done 2050 4.3ghz 24hours prime stable on evga classified
what about 4.4ghz 2100mhz etc..