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EVGA 780i Overclocking Guide - Page 62

post #611 of 1607
I just wanted to thank you, Robilar. This was my first new build of my computer and now my first successful overclock. I followed your parameters for the 3.2 overclock, rebooted and viola!! I am at 3.2ghz. On normal reboots everything would stay on and just reboot. But, on the the overclock reboot, it all shut down and rebooted, i guess that is normal. it had me worried for a second. my superpi went from 21 to 16. my 3dmark06 went from 13158 to 17220. my 3dmark05 went from 15912 to 21492. it was strange how on the 3dmark scores having a single gpu to sli only got me 500 or so points but the overclock got me 4000 to 6000 points. is this correct? i am wondering if my sli is working correctly. on a graphics test i would think the gpu's have more impact. does it matter which vga port you plug in the monitor? i will be trying to overclock to 3.6 after a little while of burn in. once again thanks for your guide on overlocking for dummies. Rep+ Robilar.
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post #612 of 1607
CPU was more than likely bottlenecking the SLi cards, i found the same thing with my 8800gt sli's performing amazingly better when i clocked my quad to 3.2.
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post #613 of 1607
I hope you can get further than me though fella, i seem to be one of the unlucky ones because no matter what i can't get past 3.2, despite any settings whatsoever, i can just about hit windows starting at desktop before i blue screen everytime, despite any voltages etc.... looks like its vdroop mod for me.
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post #614 of 1607
well i think i found what was screwing up my overclock and stopping me getting past 3.2 regardless of what setting i use, voltage/ timings etc.

running at 3.2, 8 x 400 i have voltage set to 1.4825 and cpu-z when under full load reads 1.392, which looks like some serious ass vdroop! looks like its pencil sharpening time for me.
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post #615 of 1607
im no expert but for me i followed Robilar on the first page and he has it at 1.3625 for 3.2and 1.4825 for 3.6. you sure your are not too high on voltage for the 3.2? i think i understand what the pencil mod is but can someone explain exactly and do you all recommend it?
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post #616 of 1607
Good to see the guide helped you fellas.

There is a fair amount of vdroop on the board but I'm not a personal fan of vdroop mods. considering the board does not use solid caps, the vdroop mod will eventually degrade the board's ability to be stable at any voltage. I've run 1.4925 vcore (in bios) through the board since I got it in December for a stable 3.6 OC with only several mystery crashes (that may have been software related as it only happened in COD4) without any concern for the vdroop.
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post #617 of 1607
Following your guide and memory timings, and using my own with several adjustments to voltages etc, the furthest i have managed to get is to vista desktop startup at 3.6 then it crashes or just locks, what kind of voltage do you see in cpu-z when set to 1.4825 Robilar? I know it's often the case that some chips just don't want to clock up and my memory may also be holding me back a little, but frustration is starting to set in that i can't even go as far as 3.3 without complete failure, 1600 FSB X 8 is the absolute most i can push through my CPU with a complete failure to get the OS so much as displaying, let alone stable under load.
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post #618 of 1607
1.4825 is not enough in the bios to give me stability at 3.6.

I need 1.49 in the bios
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post #619 of 1607
Wooohoooo!!! I am at 3.6 gigahertzzz. at 1.48125 i think i am stable. i only did prime 95 for 10 mins so far and it seems stable. i did the 3dmark05 and 06 and got better scores without a problem. my superpi is at 14.375. my 3dmark05 is 13788, is that ok. my 3dmark06 is 18855, how is that. i have not touched the stock 8800gts 92 yet. i wanted to find out my max for the cpu first.

at idle cpu-z and everest both say around 1.42 volts and at load both say 1.37. so now if i wanna find out my max at this current volt i would bring up the FSB incrementally? is this what overclocking is about. i would bring this up until it is not stable, correct? then i would increase voltage to meet the demand of the FSB. Where is the limit on when to stop on voltage? what is the ceiling you guys have been finding.

thank you
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post #620 of 1607
and oh what is orthos? is this the same as prime95 v256. this is the version i am running.
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