Well.........
chassis wrote
i thought so...but my friend got his 7970 up tp 1050mhz........pcandpart have an xfx 850w (non pro) which do you think is better the xfx750w pro or the xfx850w non pro ??
my friend got his 7970 to 1050mhz on the same psu!! ( i meant to say..)
First of all, it's not about how much you can overclock. 1050MHz can be achieved on stock voltage. That's a 5% increase from the 7970 GHz Edition and a 13.5% increase from the regular 7970. Those are overclocks you can set just by sliding a slider. You wouldn't even bother testing for OC stability for these clocks (but you should test, even at stock).
And good luck for your friend with using that power supply for a 7970. I don't want to be mean, but
I hope that power supply doesn't take too many components with it when it dies.
The first thing I'd advise your friend to do is buy a proper power supply. If you can afford a $400+ card, surely you shouldn't skimp on a power supply, particularly when you have a beefy system with at least an i5 or i7 (from any gen) and good RAM capacity to not bottleneck the 7970.
The Litepower is meant for low-end office builds. It should not EXIST on a gaming system.
I've known someone who ran a 3960X and 3x GTX 680s on a LitePower 700W because "700W, consumes less power, no?". He wouldn't listen to reason (Khaled was advising him), and it took out, after a month or so, 2 of his GTX 680s and his 3960X.
I've run on a fake power supply before (The Litepowers aren't fake though, but same logic applies here), a GTX260 at stock. It was a 450W model. Folded on it (full load on GPU) for 3 months or so. It began to cause my card to artifact and crash. I had to run it at half speed to help its lifespan. Eventually, the power supply just died and gave out. I got a Litepower in the meantime to power on the system, with the GTX260 at half speed, until I got the rest of my gaming system (i7 930,
Corsair HX850 power supply, etc...).
Moral of the story is, if there is
ONE THING you should not skimp on, it's the power supply.
XFX 750W Pro > XFX 850W non-pro. pcandparts do not have the Pro version. If you're not going to be running CrossFire in the near future, I'd stick with the 750W model. It's tops for a single card + many many many devices consuming power at the same time.
edhunter wroteYes, it is. So I shouldn't go above 1100?
Of course you can. I've seen no Vapor-X top out at 1100MHz only, yet. What's your ASIC quality (use GPU-Z)?
