Beware of RTL (Round Trip Latency) settings up high now also, they might need finite adjustment based on the board's BIOS settings, IMC quality, memory type/settings, and IOH setup . Once you get to this level, the amount of interaction required to get a stable system is rather painful. I recreated your problem on the DFI board last Friday, switched over to the Gigabyte Extreme and RE II now for clocking this memory up.

i have finally gotten some time to sit down with my Elpida kit on the EVGA X58-SLI (previously dead stuck at 960MHz 7-8-7) with the new BIOS SZ21.

again, i found myself stuck at 960MHz'ish so i started testing each stick individually.
one stick first slot - pass single 32M @ 970 7-8-7-20-1T
two stick f&s slot - pass single 32M @ 970 7-8-7-20-1T
three stick all slots - freeze/hange/reboot/etc... single 32M @970 7-8-7-20-1T

so i simply started empirically testing settings because nothing had worked, low and behold, DIMM DQ Vref seemed to be the secret. everything
else the same, VTT @ 1.44v, vDIMM @ 1.68v under load, i just cracked out a single 32M at 993MHz 7-8-7-20-1T and have ran maybe 15 single
32Ms on the way up from 970 without a single freeze/reboot/restart/bluescreen. i have had a couple errors when CPU frequency got too high
with too little vCORE, but that is what i was hoping for...actual errors, not freezes. just got another actual error on 3rd loop. bumped VTT and just
kicked out a single 32M @ 1000MHz 7-8-7-20-1T.

now i know i just ended my run and ruined the rest of my night posting about it - because that always seems to happen when i post findings and i have no idea how this might relate to other boards...but going from 0 to +100mV DIMM DQ Vref has gotten me over a major hump with my
Dominator-GT 1866s and this board. it has also completely eliminated the huge vDIMM droop i was getting on this board before. HTH someone else out there, i was pulling my short white hairs out with this board and high mem clocks.

thnx Jody i like to see someone else got some results..even without speaking each other......i also played yesterday evening after discussing with Hiwa. I finally had my Avantium Elpida pi32 stable on DFI UT x58 + bios 227.
Killer point for me were this settings:

DIMM 1/2 DQ/DQSTB Bus VREF: -00.0%
DIMM 3/4 DQ/DQSTB Bus VREF: -00.0%
DIMM 5/6 DQ/DQSTB Bus VREF: -00.0%
ADDR/CMD VREF Control: Disabled
x DIMM 1/2 ADDR/CMD Bus VREF: 110
x DIMM 3/4 ADDR/CMD Bus VREF: 110
x DIMM 5/6 ADDR/CMD Bus VREF: 110


I came to that though because on Asus r2e i played a bit with vref too.
on DFI i noticed some improvement running this way:


ADDR/CMD VREF Control: Enabled
x DIMM 1/2 ADDR/CMD Bus VREF: 90
x DIMM 3/4 ADDR/CMD Bus VREF: 90
x DIMM 5/6 ADDR/CMD Bus VREF: 90

This helped me a lot. Anyway I had to give Dram voltage = 1.755 from bios (about 1.7 read from SG) which is a lot higher than what I gave on R2e. But this way i reached:

http://news.tecnocomputer.it/stuff/F...2_2000_777.JPG

great result eva!!! I think your ram with chip elpida are the best for intel core i7

Yeah with CapFTP's new found ADDR/CMD Bus VREF tweak, its alot easier to bench for single super pi 32M at >DDR3-2000Mhz speeds. With ADDR/CMD Bus VREF tweak disabled I can really get single Super Pi 32M consistently stable beyond 1024Mhz 7-8-7-20 1T. Now it's alot easier

ADDR/CMD Bus VREF = Enabled set at 100/100/100

@DDR3-2100Mhz 7-8-7-20 1T at 1.71v bios set (1.715v real DMM)



Haven't tried musical chairs with each GT module testing different configurations yet which I'll do next. So masking tape label each module as #1, #2 and #3 and test all combinations in dimm slot 2+4+6.

1/2/3
1/3/2
2/3/1
2/1/3
3/1/2
3/2/1