QPI wall, any suggestions?

[Putz]

Personally i think the 12gb is holding me back

Mother Board ( EVGA X58 Classified E-760 )
Drivers ( )
Bios ( latest )
CPU ( 920 do ) (with 920's please also add the stepping CO or DO)
CPU Cooler ( true push pull)
Memory ( gskill 12gb 6x2, 1600 9-9-9-24 )
PSU ( Corsair HX1000 )
GPU ( GTX285 X 2 )
Drivers ( 190.62 )
Operating System ( Windows 7 64 Ultimate )


Frequency Control
CPU Clock Ratio ( 21X )
CPU Host Frequency (Mhz) ( 3938 )
MCH Strap ( Auto )
CPU Uncore Frequency (Mhz) ( 16x )
CPU Clock Skew ( 0 ps )
Spread Spectrum ( Disabled )
PCIE Frequency (Mhz) ( 101 )


Memory Feature
Memory Speed ( XMP Profile 1 )
Memory Control Setting ( Enabled )
Memory Frequency ( 2:8 )
Channel Interleave Setting ( 6 Way )
Rank Interleave Setting ( 4 Way )
Memory Low Gap ( Auto )
tCL Setting ( 9 )
tRCD Setting ( 9 )
tRP Setting ( 9 )
tRAS Setting ( 24 )
tRFC Setting ( 74 )
Command Rate ( 1t )


Voltage Control
EVGA VDroop Control ( Without VDroop )
CPU VCore ( 1.2125 (have tried up to 1.4))
CPU VTT Voltage ( 0 )
CPU PLL VCore ( 1.1 (auto) )
**IOH PLL VCore ( 1.8 (auto) )
DIMM Voltage ( 1.5 (have tried 1.65) )
DIMM DQ Vref ( +0mV )
QPI PLL VCore ( 1.1 (auto) )
IOH VCore ( 1.1 Auto )
IOH/ICH I/O Voltage ( Auto )

**VTT PWM Frequency ( auto)
**CPU PWM Frequency ( auto )
**CPU Impedance ( auto )
**QPI Signal Compensation ( auto )
ICH VCore ( Auto )
*PWM Frequency ( Not Used on Classified )


CPU Feature
Intel SpeedStep ( Disabled )
Turbo Mode Function ( Enabled )
CxE Function ( Disabled )
Execute Disable Bit ( Disabled )
Virtualization Technology ( Disabled )
Intel HT Technology ( Enabled )
Active Processor Cores ( All )
QPI Control Settings ( Enabled )
QPI Link Fast Mode ( Enabled )
QPI Frequency Selection ( 4.800 GT/s )
OC Recorvery ( Enabled )


The memory is only running @ 1500 and rated for 1600 so i doubt i need 1.65v on that (its a 1.5v kit) but 1.65 didnt change anything

my goal is 200 QPI, Current stable @ 188 and passed linx tests, but any more and it will generate errors (189-190) and 191 will BSOD

Ive tried bumping Vore up to 1.4, vcore boost + .01/.02/.03, QPI PLL from 1.1, 1.125 and 1.15, CPU VTT from 1.2-1.4

Also tried 2T and XMP off instead of XMP on and 1T

any suggestions?

[3oh6]

start with PCI-E frequency, bump it to 110 but if you can run 113. set MCH strap to 1600, and sett VTT/CPU frequency to 490/940. if that doesn't help, then start playing with voltages in this order.
VTT +100 ~ +200
IOH VCore 1.30v

test one thing at a time, and if it doesn't work, move on to the next but leave the previous step in place. AKA, if the PCI-E frequency bump doesn't work, leave it at 113 or 110 if 113 doesn't work. LMK how it goes.

[Putz]

Ill have to check it out when i get home, stuck in the office right now... figured I was overdue do post with other Canucks

[Bojamijams]

Interesting.. I thought anything higher then 100mhz on the PCI-E would result in instability... I'm gonna follow and see how this develops (obviously 30h6 knows what he's talking about so I'm not poking fun or anything :D )

[MpG]

While I'd certainly go 3oh6's route first, in my own (limited) experience, adding a couple hundred ps of clock skew has often been a big help when trying to push beyond 210Blck. It might help at lower numbers as well?

[Sagath]

Originally Posted by MpG

While I'd certainly go 3oh6's route first, in my own (limited) experience, adding a couple hundred ps of clock skew has often been a big help when trying to push beyond 210Blck. It might help at lower numbers as well?

Hes stuck at ~190, skew wont do much presently, unless hes jacking the bclk and lowering the multi.

I didnt know that about the PCIE either. Thanks for that 3oh6!

[Putz]

cant do 110/113 on the pcie just BSOD's

189 QPI is stable for linx and days of folding, but 191 BSOD instantly lol even with tweaking voltages all over the place

[Sagath]

Try changing your uncore multi to 17x. i7's allow 2xRammulti or 2xRammulti+1 on the Uncore. *shrug* Could be an Uncore issue. I had it on my gigabyte, and this fixed it.

[Putz]

its not a big deal 3.87 isnt bad on 1.2v and stock v on everything else, XMP1, 1T timing, 1.5 memory and all with all 6 ram slots populated