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P6T Deluxe V2 wc + I7 920 D0 wc @ 218x21= 4578MHz stable HT off - How far can I go?

post #1 of 5
Thread Starter 
My system:

P6T Deluxe V2 1202 Bios watercooled
I7 920 D0 watercooled
3x2GB GSKILL PI DDR3 1600MHZ 1,5v CL7
Evga GTX560 Ti SC watercooled
Corsair TX650 V2

218x21= 4578MHz stable HT off

45htoffprime95estavel-Cpia.png

Bios

DSCF0248.jpg

Ram

DSCF0247.jpg


I've been trying 220x21 and 219x20 but even after rising the cpu voltage until the max the pc will not boot.
But I've been trying to raise other voltages and if I raise the QPI/DRAM voltage from 1,40000 to 1,41250 the pc boot with 219x21 and is stable enough to run 3D mark 2011.

DSCF0245.jpg


How far can I go? I just want to know how much I can squeeze of my system, if I continue to raise the QPI/DRAM voltage can I go up to 230 + BCLK?

Have not tried 220x21 after rising the QPI/DRAM voltage because I do not know how far I can go without burning anything, The temperatures are still far from the limits recommended by the intel.


How far can I go?
Edited by Proserpine - 1/5/12 at 12:56pm
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post #2 of 5
I hit a wall at 220x21 with my watercooled 930. 1.41V would take it to 219, but nothing I would give it could get it to 220.

You could push Vcore higher, but I wouldn't if you're going for 24/7 overclock. If you're just trying to validate/bench it you could probably take it to 1.5. I personally wouldn't take QPI much higher...

There are a bunch of 920s and 930s that have been able to get to 230+ BCLKs but their pushing 1.5-1.6V.

YMMV...
Edited by wTheOnew - 1/5/12 at 12:49pm
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by wTheOnew View Post

I hit a wall at 220x21 with my watercooled 930. 1.41V would take it to 219, but nothing I would give it could get it to 220.
You could push Vcore higher, but I wouldn't if you're going for 24/7 overclock. If you're just trying to validate/bench it you could probably take it to 1.5. I personally wouldn't take QPI much higher...
There are a bunch of 920s and 930s that have been able to get to 230+ BCLKs but their pushing 1.5-1.6V.
YMMV...

I'm just trying to validate and bench, for 24/7 for me 4.4 is enough.

Looks like I also hit a wall at 220x21... I read in some old threads that rising the PCIE frequency to 105+ helps to pass the 220 but have not tried.

Looks like this i7 920 D0 supports more than 220 but my motherboard is limiting the overclock. I'll try to raise the QPI/DRAM...
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WD Green 1TB 64MB Sata II Slim Toshiba USB WC powered by Swiftec MCP35x Seven Ultimate x64 
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Acer 24" / Asus 23" / 2 Samsung 19" Logitech Corsair TX-650w V2 Modded Silverstone Raven 2 
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post #4 of 5
Thread Starter 
I managed to boot twice with 220x21 after relaxing memory timings but after trying unsuccessfully 221x21 can no longer boot with 220x21 mad.gif

If I lower the CPU multiplier can I get past the 220 BCLK?

I read about a strange rule in some threads, the QPI/DRAM 0.5v rule. I've read several different explanations of this rule that I do not know which one is correct, some sources say that QPI/DRAM needs to be .05 from Vcore while others say it needs to be .05 from DRAM, which one is it?

Can someone help me?

Thanks
Proserpine
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Acer 24" / Asus 23" / 2 Samsung 19" Logitech Corsair TX-650w V2 Modded Silverstone Raven 2 
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My System
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CPUMotherboardGraphicsRAM
i5 4670K Gigabyte Z87X UD3H EVGA GTX560 Ti SC GSkill PI 3x2GB 1600MHz CL7 PSC @ 2200  
Hard DriveOptical DriveCoolingOS
WD Green 1TB 64MB Sata II Slim Toshiba USB WC powered by Swiftec MCP35x Seven Ultimate x64 
MonitorKeyboardPowerCase
Acer 24" / Asus 23" / 2 Samsung 19" Logitech Corsair TX-650w V2 Modded Silverstone Raven 2 
MouseMouse PadAudio
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post #5 of 5
Quote:
Originally Posted by Proserpine View Post

I managed to boot twice with 220x21 after relaxing memory timings but after trying unsuccessfully 221x21 can no longer boot with 220x21 mad.gif
If I lower the CPU multiplier can I get past the 220 BCLK?
I read about a strange rule in some threads, the QPI/DRAM 0.5v rule. I've read several different explanations of this rule that I do not know which one is correct, some sources say that QPI/DRAM needs to be .05 from Vcore while others say it needs to be .05 from DRAM, which one is it?
Can someone help me?
Thanks
Proserpine

Best multi for a 920 is 21x from what ive found.
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Overclock.net › Forums › Intel › Intel CPUs › P6T Deluxe V2 wc + I7 920 D0 wc @ 218x21= 4578MHz stable HT off - How far can I go?