Some quick help on i7 920 OC

Alright, I have been working with this system for the whole weekend lowering voltages and testing with LinX with 20 cycles to find out what I can achieve as a reliable overclock. I took the settings from Maximum PC and tested to see if I could boot, and once that was completed that's when I started the lowering of voltages and testing.

System Specs:

Gigabyte BA-EX58-UD5 motherboard
Intel Core i7 920 D0
OCZ Platinum DDR3 1600 3x2GB
Corsaid TX850w PSU
Prolimatech Megahalem w/ 113CFM Delta PWM fan
EVGA GTX275 FTW
3x WD Caviar Black 640GB - RAID 0

I started out with these settings...
Everything in BIOS was set to AUTO except the

BCLK [183]
CPU vCore [1.400v]
QPI/Vtt [1.300v]
System Memory Freq [x6.0]


I have now, after 18 tests/runs gotten down to these settings...
Everything in the BIOS set to AUTO except the

BCLK [183]
CPU vCore [1.23125v]
QPI/Vtt [1.300v]


First, let me say this I did have the system booted at 1.2250v and got to the 7th of 20 cycles in LinX before the computer Blue Screened with a 124 which from my research indicates a Memory timing/multiplier or Uncore issue. I think I could successfully boot and run stable at or below 1.2250v if I knew how to adjust the memory and Uncore settings properly or at least know the basics and tips at how to configure them.

So, I am currently running tests at 1.23125v, but I need to know how I can correct the memory and/or Uncore issue so that I can continue lowering volts and possibly even increasing the BCLK. I've read the OCZ Platinum can be picky about timings and voltages so I think having all of that set to AUTO is limiting me, but I'm not quite sure how to correct this.

Any help is appreciated, Thanks!!

I would also manually set the Mem voltage and base timings. For a DO and the settings you are showing you should be able to bet a much higher clock without any problems, maybe there is a compatibility problem with your mem?

Are you sure you have your mem in the slots farthest away from the cpu socket of each pair?

I've done some more tweaking, but starting at a point I know it is stable ( 20 cycle run of LinX w/ All Memory), and here is a breakdown of some of the troubles I encountered -- and maybe someone can help guide in a direction.

CPU Ratio @ 20x
BCLK @ 183

I changed the...
vCore voltage --> 1.2500v
DRAM voltage --> 1.5v (CPU-Z had a listing of speeds)
QPI/VTT --> 1.300v
Memory Timings --> 7-7-7-16-1T and the tRC to 27
Memory Multipler --> x6
Uncore --> x13

LinX passed with no errors with these settings, so I was like "okay, sweet with the extra 1x multiplier I am running good with 3.8Ghz!"

(voltages not changed) So then I tried....


BCLK @ 190
Memory Multiplier --> x8
Uncore --> x17
Memory Timings --> 8-9-9-19-1T and the tRC to 31

I started LinX with a 20 cycle run and I watched it reach 3-4 cycles and then I went and di something else for a little while. I come back it has reached it's 11th or so cycle - so I decided that it was probably stable and I would let it finish, so I went and watched some TV.

WRONG!!
It Blue Screened with another freakin' 124 error message. So,,,, Do I lower or raise voltage? DRAM voltage? or QPI/VTT voltage?
I do not know, nor do I know if it is my memory timings and how to loosen them up, either.

Does anyone have any suggestions?

Right now I am trying

CPU Ratio --> 20x
BCLK --> 183
vCore --> STOCK (1.2125v or something)
QPI/VTT --> 1.30v
Uncore --> x13
DRAM --> 1.5v
Memory Multi. --> x6
Load Line Calibration --> Enabled

So far it has passed a couple of cycles, but I do not know if it will finish completely,,,it gives me something to do until someone responds.

Thanks!

Just to let you know the last test I posted about that I was running and sure it would fail -- did actually complete 20 cycles of LinX before I stopped it for the night. I am currently running 100 cycles to see if it is rock solid. I hope to step up from this to try and reach 4.0Ghz, I am currently running at 3.8 b/c the Turbo stays on.