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Gigabyte GTX 670 OC Version *HANDS ON* - Page 94

post #931 of 1506
Quote:
Originally Posted by brettjv View Post

I posted this elsewhere but I'll repeat it for this popular thread ...
My GB GTX670 OC overclocking info:
Stock Core Clock after 'Kepler Boost:': 1189MHz
(Apparently) Stable Overclocks So Far (lots of benches run w/o crashes/artifacts)
1) 1345c/3225m (1.162V)
2) 1325c/3600m (1.162V)
The frequencies are all actual 'observed' clocks via AB graphs during bench runs.
Drivers: 301.25
Max Voltage can be raised to 1.175 in Precision X, but won't budge over 1.162 in AB even w/voltage slider maxed. I've NOT tried OC'ing at 1.175V yet but plan to try it out in the future.
I'm also going to be running various benches to determine which of the two OC configs I prefer ... but I'm very much leaning towards the 2nd one as the better of the two. It seems worth it to lose a little core to gain a ton of memory bandwidth.
At these clocks, my temps get up to 62-65C after running for long periods at 99%.
I don't know what the fan speed is (my guess is the 45% range) but I'll tell you this ... my case runs VERY quiet as all my fans are on controllers ... and I absolutely cannot hear the card at ALL ... even after 20 minutes of benching Heaven maxed out. Not even thinking of making any fan profile, the one that's on there now works perfect.
I'd guess that at 1.175V it might be a little different but I'm pretty damn happy what this card does, in terms of noise, clocks, and temps at 1.162V so I doubt I'll push it any further, at least not for 24/7 use ...
I've only overclocked using afterburner. I wonder if I can get a higher OC using EVGA precision by raising the voltage a tad. Hmmm.. Possible 1400Mhz core OC coming my way?

Highest Heaven/3D Mark 11 stable OC is 1380/3326 using EVGA Precision.
Edited by DADDYDC650 - 5/16/12 at 8:26pm
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post #932 of 1506
Both precision and AB have a voltage adjustment but it does nothing on either of them.
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post #933 of 1506
Quote:
Originally Posted by lightsout View Post

Both precision and AB have a voltage adjustment but it does nothing on either of them.
That's what I figured since they both let me run the same max OC which is 1380 on the core.
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post #934 of 1506
If that 1380 is really stable. Not just bench stable then you got a damn good card.
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post #935 of 1506
So yeah... this just happened lol... +800MHz OC on memory

I was actually able to get it to run at +1000MHz, but was artifacting like crazy, didn't crash though. Going to do some more to see what I can push it to, keeping it stable with no artifacts. +850mhz had some artifacting, thinking +820-825 will be the limit.

338
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post #936 of 1506
Nice score. 1340 sweet clock. You need to watch your score with the memory. Just because you don't see artifacts doesn't mean its raising performance. And some point it will start hurting you.

Man these gigabyte cards are pretty sweet. Your pretty much equaling my max score my 680 got at 1228 core.
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post #937 of 1506
Quote:
Originally Posted by LexDiamonds View Post

Just adding another Giga OC result..
Mine does 1305/3645 stable for multiple passes of Heaven.
I can get single runs with the core at 1340, but its not what I would call stable. Temps stay under 70C. I am debating if I want to hassle with adding the card to my water loop (I use a CPU block with homemade holddown plate). In playing around with the fan speed, temps dont seem to be holding me back. I MIGHT be able to get another 5-10mhz stable on the core under water.
The mem OC really impressed me. I was getting small, but consistant gains in both Heaven and 3DM11 moving up in 20mhz steps. Finally saw the drop off in performance around 3670Mhz (wasnt seeing artifacts yet however). The Giga cooler cools the memory via a full contact heatspreader so this is another drawback to going to water on the core- I may lose some of my mem OC unless I make special provisions to actively cool the mem chips.
All in all, I'm happy.

have you tried gaming yet? i had 1306 in heaven but it froze as soon as i ran batman arkham ciyt.
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post #938 of 1506
Quote:
Originally Posted by lightsout View Post

Nice score. 1340 sweet clock. You need to watch your score with the memory. Just because you don't see artifacts doesn't mean its raising performance. And some point it will start hurting you.
Man these gigabyte cards are pretty sweet. Your pretty much equaling my max score my 680 got at 1228 core.

Yeah I was watching the memory, that was all I was raising keeping the core at +150. It did actually keep going up each time I increased it, I was reading before about how some people it was actually hurting the score when they kept raising it. I think I found my fully stable OC just now +170 core +840 memory, haven't played any games with it, but got through 5 consecutive runs of 3dMark11.

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post #939 of 1506
Quote:
Originally Posted by g00s3y View Post

Yeah I was watching the memory, that was all I was raising keeping the core at +150. It did actually keep going up each time I increased it, I was reading before about how some people it was actually hurting the score when they kept raising it. I think I found my fully stable OC just now +170 core +840 memory, haven't played any games with it, but got through 5 consecutive runs of 3dMark11.
338

yea go ahead and try some games, bf, batman, metro
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post #940 of 1506
Quote:
Originally Posted by lightsout View Post

Both precision and AB have a voltage adjustment but it does nothing on either of them.

I'm here to tell you ... running Afterburner my vcore will not step above 1.162. Running Precision X, my vcore will step to 1.175. In both cases I just maxed the voltage slider. Dunno if the slider did anything in either case, but ... yeah. My card DEFINITELY can get a higher voltage in Precision. Too bad I prefer AB.
    
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