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Asus DirectCUII HD7970 or GTX670 - Page 2

post #11 of 42
Well, if we're on to other models, I'd also give thumbs up to Sapphire Dual-X 7970 OC edition (not the recent GHz edition, as there's no reason to overpay). Cheaper, cool, quiet if you don't go to high voltages, overclocks well.
   
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post #12 of 42
Thread Starter 
Yeah I was thinking about the Sapphire card, but it costs the same as the Asus 7970, and it seems to have a lot of problems with coil whine, which kind of destroys the purpose of having quiet fans
post #13 of 42
Mine has it, but I have to say, I read about it going away over time, and it did happen for my card too. When I first got it, there were all kinds of chirping, whining, and odd sounds from it, especially on various game menus. I let the card run on those menus for hours, a few times, and the noise went down significantly. Nowadays, there's basically no whine (beyond an easy-to-ignore chirping sound at load) unless I go to very high clocks (I keep mine at 1100/1575 @ 1.080V as set by MSI Afterburner).
   
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post #14 of 42
Thread Starter 
You just had to make my life harder didn't you? wink.gif How does the noise it makes compare to the 670?
post #15 of 42
Well, the GTX 670 that *I* have has no coil whine. I'm sure it varies, because I've seen reports of people whose cards do. I think it's dependent on power supplies too to some extent, as it's all about the resonance frequencies. It's silent up to like 35-40% fan speed and barely audible up to 50% fan speed. The fans get whiny above that, though remaining relatively quiet even at 100% fan speed (vs. like an old XFX 9800 GT which sounds like a wind tunnel even at 50% fan speed). The Sapphire 7970 is very quiet up to 50% fan speed. All I hear is the chirping sound from the coil whine. It's got no tonal component, more like slower crickets / high voltage sound, but it's not bothersome. At over 50% fan speed, the fans become significantly whinier than the ASUS ones, and it's very audible at 80%+. I have a custom fan curve to keep my card below that fan speed, and I keep the overclock / voltage correspondingly constrained for that reason (to stay within 70C core / 80C VRM1 at relatively quiet fan setting).
   
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post #16 of 42
Thread Starter 
What kind of fan curve and clocks do you use on both cards?
post #17 of 42
I own a 670 and I say go with the 7970, it is just the better card. BUT I think the voltage is locked on that card, I would ask around in the 79XX owners club for the best one atm.
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post #18 of 42
Can't go wrong with either. If it was up to me I would go with a non-reference HD 7970. Also, 3 GB of VRAM can never hurt.
post #19 of 42
Your best bet is a 7970, if you are wanting to save money get a gigabyte windforce 7950 over clock it and you'll be faster then the 670 for less money
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post #20 of 42
No reason for Kepler any more. Unless you really want PhysX and Cuda. If you OC them Both to the MAX HD 7970 will end up a much faster card with current drivers.
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