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Evga Gtx 470 SC + Accelero xtreme plus

post #1 of 15
Thread Starter 
Hi i am totally new to this. I have watched few reviews on to do it,but i am still unsure so i will ask. I have Kombustor, msi afterburner:


http://www.shrani.si/f/2p/Oa/3mCdbKtJ/afterburner.png

And how do i recognise these "artifacts"? (yes i am newbie)

http://www.shrani.si/f/1K/QF/2T1dHhGc/afterburner-1.png

12+ hours to be sure its stable? and 1.087mv is maximus safe voltage for 24/7 overclock?

how far did you guys gone at 1.087mv? i am at 800/1600/2000 (is it ok?)

I can not believe this temps are real. It does not move above 50 degrees

THX
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post #2 of 15
Your voltage settings should be just fine.

As for testing, I recommend getting OCCT and running with error-checking. It actually shows a counter of any artifacts that show up. In addition, you also want to run a variety of tests, like 3DMark and any games that stress your GPU, like Crysis or Metro 2033. Some tests may show stable, but another may cause crashes.

As for length, if you can go roughly 15 minutes in OCCT without any errors, that's considered stable in that software. If you can make it through a 3DMark run, and the benchmarks in various games like Crysis/Metro, provided you have them, that's a decent indication of stability.

Sent from my T-Mobile G2
post #3 of 15
i think i got 850/1700@1.087 but with stock memory as any increase would cause artifacts.
It was enough to get fps increase in gaming which was the reason for overclocking it anyway.
just keep an eye on temps.
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post #4 of 15
Thread Starter 
okay.. i tryed OCCT. After 3 min (i guess), it showed me black screen and had to restart PC.

Had 1920x1080p with error-checking temps about 66 degrees, guess earlier it did not benched at 1080p (where i got 50 degrees, knew it was too good to be true)

MightyMission - so i need to back down memory, like at 1850?
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post #5 of 15
Thread Starter 
yet again 800/1600/1850 OCCT 4 min same settings, got black screen again, need to restart...

am i doing something wrong or is it bad overclocker my 470?
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post #6 of 15
up the voltage. 470's are great overclockers but need voltage to stretch their legs.
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post #7 of 15
Thread Starter 
afterburner wont go that far, need to bypass it? anyway i wont go above 1.087mv, i am only experimenting, wont go into extremes. so i need to back down memory? or core clock too?
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post #8 of 15
Drop mem clock to 1700, run test. If it black screens again you will need to adjust voltage through BIOS flash or lower Core clocks. If it passes, increase mem clock in 25mhz increments until you fail again to find your max mem clock.

Be careful running so much stress testing with the AXP. It keeps the core cool, but the VRMs still get toasty.
 
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post #9 of 15
Thread Starter 
thx theonedub, that worked. 800/1600/1700 OCCT 30 min (1 min idle & 5 min after idle included in test) 1920x1080p max temp 66 degrees and PCB 45 Degrees.

Is that ok for PCB?



so from now on i increase memory clock by small ammount until it crash and leave it at step lower?

by OCCT it should be stable 24/7? what i mean only 15 min OCCT makes you stable? (i know it variate, will try 3dmark, crysis and some other tests too)
Edited by Terra - 3/12/11 at 11:06am
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post #10 of 15
Its either higher core clock or higher mem clock on these cards. They dont really like both of them to be cranked up high at the same time.
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