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Can't achieve 1GHz with evga 560 ti

post #1 of 10
Thread Starter 
Hi, quick question.
I have me a EVGA GTX 560 Ti FPB, I can't get this card past 1GHz no matter what. Heck, I'll put it on max volts (1.150v) and it still wont be stable, just crashes. I've used heaven benchmark, evga oc scanner, MSI Kombuster and 3DMARK11. I'm on the latest beta driver, I've also tried many other older drivers.

I'm currently running the card on 975/1950/2200 on 1.1v stable
Problem is I'm running it on a very cheap PSU, but it meets the right requirements to run the card. 585w, 39amps on the 12v rail.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817339012

So is the card just a bad overclocker or do I have a bad PSU?
Thanks, I really want that extra 25MHz sad-smiley-002.gif
post #2 of 10
975Mhz at 1.1v is not "a bad overclocker" if it's actually stable. Don't concern yourself with going higher just for the sake of a round number or bragging rights or anything. You can not tell a 2.5% difference in clock speeds in gaming. It's possible that your card could attain a handful more Mhz with a PSU that has better voltage regulation to give it cleaner power with less ripple, but it would be a really minor difference if it were even there at all. You would not see a big difference with a different PSU because if the PSU was the issue it would be shutting down your machine at full load.
Edited by juano - 1/26/12 at 6:01pm
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post #3 of 10
As with CPU's not all chips OC the same. I've got a bum 580 that only does 900, so what? Remember these chips aren't ever guaranteed to hit any clock beyond factory, so really anything you can get is a good thing. It's doubtful that you would even notice 25MHz.
post #4 of 10
Thread Starter 
Quote:
Originally Posted by juano View Post

975Mhz at 1.1v is not "a bad overclocker" if it's actually stable. Don't concern yourself with going higher just for the sake of a round number or bragging rights or anything. You can not tell a 2.5% difference in clock speeds in gaming.

Well it's just that I've heard so many people achieving 1GHz so easily with the 560 ti, I started to ask myself why am I struggling so hard to get 1GHz.
post #5 of 10
I'm kind of in the same situation as you right now, i'm overclocking one of my GTX480's and i just cant get past 875MHz core. So i really think that it's like Metaldude says, each chip is different and will clock different. One thing i would test since you say you're running with a cheap PSU, is if you possibly could borrow a better PSU from a friend of yours. Just to see if it's a bad power source or if your GPU core just isn't so at overclocking.

Another thing i read about when searching for tips on overclocking my 480 would be to flash your graphiccards BIOS (if it's possible and it works the same way as the 480) to be able to get a even higher core voltage. But as i said, i don't know if it works on a 560Ti.
post #6 of 10
I've addressed the extent to which a PSU could be affecting things, and he doesn't want to use more than 1.15v unless he didn't care about the how long his card will last and you certainly wouldn't want to more than 50mV additional voltage for only 25Mhz clock speed. What this really comes down to is that you want to be able to say that you have a "1Ghz 560ti zomg!!1!" but it's really not worth it. You're going to do whatever you feel like of course but you would be much better off if you could just be happy with what you have.
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post #7 of 10
Your short by 25Mhz.

In real world PC useage, thats not going to be a game breaker.

I know its a bummer that you cant break 1Ghz, but really, your OC is very good.
post #8 of 10
Thread Starter 
Well thanks guys. I'll try to get a better PSU like an antec one, and if results are same I'll just stick with my oc settings.
rep+ to all
post #9 of 10
Quote:
Originally Posted by juano View Post

975Mhz at 1.1v is not "a bad overclocker" if it's actually stable. Don't concern yourself with going higher just for the sake of a round number or bragging rights or anything. You can not tell a 2.5% difference in clock speeds in gaming. It's possible that your card could attain a handful more Mhz with a PSU that has better voltage regulation to give it cleaner power with less ripple, but it would be a really minor difference if it were even there at all. You would not see a big difference with a different PSU because if the PSU was the issue it would be shutting down your machine at full load.

Don't buy a new PSU to reach 1GHz, buy a new PSU if you'd like because you want to get a better PSU for something like higher wattage, efficiency, or that yours is old, near it's limit and not a great brand (which may or may not be the case I don't know enough about PSUs to tell you definitively). If you do decide to get a new PSU then do so according to this PSU calculator, and if you still have questions after that then post in the PSU section. The PSU section would also be able to tell you if you current PSU is a bad brand or too close to it's limit for comfort.
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post #10 of 10
that's surprising, I was able to hit 1GHz on just 1.08V, as Metaldude says, it does vary from chip to chip, some chips just have a gammy CMOS that takes ages to rise and fall and there's nothing you can do. Voltage helps but only up to a point. Sethy666 is right on with it not being a game breaker, GTX560Ti is a great card anyway, if you need alot more performance, perhaps sli or an upgrade would be a better application of your time?
 
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