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Is this a good i7 950 Overclock?

post #1 of 10
Thread Starter 
Before I press that apply button, I wanna make sure it looks good from somewhat an "expert" point of view.

BLCK - 175
QPI GT/s - 6328
UnCore Clock - 2812
Mem Clock - DDR3-1406
CPU PLL: 1.84
CPU Voltage - 1.35
QPI/DRAM - 1.35
DRAM Freq - 1600
Dram Bus Volt - 1.66

Another question is, what do I do if the specific numbers arent there? Go to the closest choice to the number?
Like 1406 isn't available on the selection. Also, my PC stats in my Sig are retarded. Here's my rig.

i7 950 @ 3.07 GHz
ASUS Sabretooth x58 Motherboard
12GBDDR3 XMS Corsair RAM @ 1333MHz
Hyper N520 Air Cooling Heatsink (Temps run 30-40 idling due to hot weather.)
EVGA GTX 580 Superclocked Black Ops Edition

Any help would me nice, especially if an owner that has overclocked their core i7 950 to 4 GHz would share their setup for the BIOS. Thanks!
post #2 of 10
PLL is too high. Either leave it at stock 1.8v or even undervolt it to around 1.75v. No need for QPI/DRAM to be at 1.35v either. For only 1400mhz memory you can probably decrease it a good bit.

Just because you read about "safe" values for certain settings, doesn't mean you automatically increase them to that value. For determining the proper QPI/DRAM voltage it's good to run something like LinX or IBT on max memory. With all my experience on X58 increasing PLL has never helped anything, and decreasing the value works fine too or leaving it at stock.
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post #3 of 10
Thread Starter 
I used the online calculator to determine that Mem Clock 1406 number That's why I'm using it. What should I do, from your POV to get 4.0 GHz. So I should lower the PLL 1.8 to 1.75? What exactly does that do? Same with QPI/DRAM at 1.35. What should I set that one to?
post #4 of 10
Quote:
Originally Posted by Dopamin3 View Post
PLL is too high. Either leave it at stock 1.8v or even undervolt it to around 1.75v. No need for QPI/DRAM to be at 1.35v either. For only 1400mhz memory you can probably decrease it a good bit.

Just because you read about "safe" values for certain settings, doesn't mean you automatically increase them to that value. For determining the proper QPI/DRAM voltage it's good to run something like LinX or IBT on max memory. With all my experience on X58 increasing PLL has never helped anything, and decreasing the value works fine too or leaving it at stock.
To get my old 920 stable I had to run upwards of 1.9v on PLL So it does make a difference when it comes to stability.
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post #5 of 10
You could do all sorts of combinations to get 4ghz. How about 200 BCLK, 21 multiplier. You can set your RAM to run at 1600mhz which is a nice even divider.

It doesn't matter what PLL does since it's not going to help you out at all. I would just leave it at 1.8v to start. QPI/DRAM is essentially voltage to the memory controller on the processor, so when running a high uncore or RAM frequency (which go up at the same time btw, since uncore should always just be double RAM frequency) it needs increased. The amount needed varies greatly between different CPUs, just as does the vcore you need for 4ghz. Be ready to experiment, and if you don't boot make sure you know how to clear CMOS.
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post #6 of 10
Thread Starter 
Yeah....CMOS....dunno what that is :\\. Did everything look fine? You keep saying 1600 MHz. My RAM is only 1333. Can I boost it up that high? If so, the only things I'm going to change would be the ram to 1600, then PLL to 1.8, then lastly what do I set for QPI/DRAM then if it shouldn't be 1.35?

NVM CMOS is F5 in bios, removing battery for reset, and using the mobo jumper.
post #7 of 10
Thread Starter 
Anyone else? I kinda wanna do this today. And I'm not trying to be pushy.
Edited by lpjz50 - 7/24/11 at 2:32pm
post #8 of 10
Thread Starter 
bump
post #9 of 10
Quote:
Originally Posted by lpjz50 View Post
Yeah....CMOS....dunno what that is :\\. Did everything look fine? You keep saying 1600 MHz. My RAM is only 1333. Can I boost it up that high? If so, the only things I'm going to change would be the ram to 1600, then PLL to 1.8, then lastly what do I set for QPI/DRAM then if it shouldn't be 1.35?

NVM CMOS is F5 in bios, removing battery for reset, and using the mobo jumper.
I mentioned it once, I didn't "keep" saying it.

Then run a different BCLK and multiplier, as simple as that. Your settings are fine, go ahead and test them.
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FreeNAS
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i7 4790k Asus Z97 Pro WIFI-AC Sapphire Nitro Radeon R9 Fury Tri-X OC+  G.Skill 4 x 8GB F3-2133C9D-16GXH 
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2 x Intel 730 480GB SSD in RAID 0 Asus DRW-24B1ST/BLK/B/AS Noctua NH-D15 Winblows 10 Pro x64 
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Pixio PX277 Logitech G510 Seasonic SS-660XP2 Fractal Design R4 Blackout 
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Logitech G500 Xtrac Ripper 
CPUMotherboardGraphicsRAM
i5 2500k Asus P8Z68-V Pro MSI R7970 Lightning BE 2 x 4GB G.Skill Ripjaws 2133mhz 
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Mushkin Enhanced Chronos 240GB and WD Black 1TB Asus DRW-24B1ST Cooler Master Hyper 212 EVO Windows 7 Ultimate x64 
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post #10 of 10
Thread Starter 
alrighty, will do thanks.
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