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[OFFICIAL] GTX 670 Overclocking - Page 140

post #1391 of 1562
Quote:
Originally Posted by nemm View Post

I was fortunate to be blessed with a golden card managing 1359 max boost and 1752 memory @1.162vcc pt 117% which I was over the moon with but then I stumbled along the modded bios thread. After reading I was easily tempted to find a new max with the increased vcc and pt because as some will agree that ocing can be mighty tempting. After playing I reached heaven 3 extreme setting stable of 1398 but being so close to 1400 I had to try but it was not to be as throttling became an issue at core boost 1411 and if it didn't throttle it crashed. This is where my testing stopped until I decided to finish my water loop and treat the card with a water block. After installing the block, I just had to try once more and I'm glad I did, max core of 1411 and memory 1853 running h3 extreme for over an hour on loop with no issues smile.gif.

http://cdn.overclock.net/7/77/77142a3f_1411-1853.png

just WOW
post #1392 of 1562
Quote:
Originally Posted by nxteraa View Post

\

Can you explain this modded bios thing you're talking about?

He is referring the modded 670 BIOS that changes power parameters and allows for the max of 1.21V (i think) to the core to be applied. THREAD HERE. Only downside to this is that when you use this BIOS it changes where your cards base/boost clocks are. I think it changes the boost clock to 1295 MHz on the core. So when your core offset is at 0 in afterburner, the card will run @ 1295 Mhz. Change the offset to +10 and it will be at 1305 Mhz (or where ever the closest 13 Mhz increment is located).

The voltage also jumps to 1.21V when the card is under load as well... so if you are on air, be prepared for some louder fan action biggrin.gif Gotta keep the card(s) below 70*C to prevent thermal throttling.
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post #1393 of 1562
I thought I'd share my PNY reference 670 settings (water cooled). I got it from Amazon during a sale and rebate offer a few weeks back. Go gentle on me, I'm a noob to these forums biggrin.gif

Precision X stuff:

GPU Clock: 1280

Voltage: 1.175 volts
Power Target: 122%
GPU clock offset: +160
Memory clock offset: +590
Max temp during Heaven: 47C

I can go a bit higher on the memory clock, but if I am understanding past posts correctly, the benefit is marginal at best vs. higher settings on the GPU clock. My goal is to try and squeeze another 2-5% out of this cards GPU. Considering what I got this for, I'm pretty satisfied already.

I'd like to thank SeanPoe for the 670 Overclocker's Guide and everyone else who has taken the time to share your settings and/or tips. I've got a bit more tweaking to do, but I'm probably about 95% maxed out already. I should probably run heaven some more times for a final stability test. If anyone is interested in seeing some benchmarks, I'll run them when I get home tonight and post.




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post #1394 of 1562
We should make a spread sheet so I can see which card and what settings hit the highest OC.
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post #1395 of 1562
I don't know what happened but I swear previously I couldn't get any overclock on my memory to stick but apparently now I'm fully stable with +500 mem. Current stable clocks are 1280mhz core 3500mhz mem. pretty pleased with that.
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post #1396 of 1562
Was just messing around with my new Gigabyte 670, really simple noob question. Does 1.175v degrade the life of the gpu significantly?
post #1397 of 1562
Agreed, some benchmarks would be nice, too, to gauge the actual improvement.
   
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post #1398 of 1562
Quote:
Originally Posted by Callil View Post

Was just messing around with my new Gigabyte 670, really simple noob question. Does 1.175v degrade the life of the gpu significantly?

No, that's the default voltage.
post #1399 of 1562
It seems I can't get past around 1122MHz core at both stock and 1.175v.

Anything I'm doing wrong?
post #1400 of 1562
Quote:
Originally Posted by Callil View Post

It seems I can't get past around 1122MHz core at both stock and 1.175v.

Anything I'm doing wrong?

You're not watercooling them just yet, lol.
   
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