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  #11 (permalink)  
Old December 10, 2012, 05:17 PM
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try something for me
download msi afterburner - enable voltage adjustments
enable unofficial overclocking "google it" set unofficial oc to 2 not 1

and bump your core voltage to 1160 - set power limit to +20 mem voltage to 1625
then click user define on the fan speed portion and set a scaled fan profile that maxes to 100 @ 75*C and run your card and see if it still artifacts.

I've had a 7970 run it for ever oced. my boss got one and was having artifacts and eventual horizontal lines. i bumped the voltages for him slightly and changed his fan profile to be a bit more aggressive and it stopped all his issues.

i should have told you disable CCC performance ocing before you do this as well they may conflict if that's how you were ocing.
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  #12 (permalink)  
Old December 10, 2012, 05:42 PM
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Thank you for the advice, but since i paid 430 bucks for this card it should work as intended out of the box.So I am RMAing it and hopefully the next card will work.For now back goes in the 6950.......it ran cooler and OC'd like a champ with no voltage bump.Odd that it would not artifact or tear during multiple 3dmark 11 runs....
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  #13 (permalink)  
Old December 10, 2012, 06:19 PM
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if your going to oc you should ALWAYS expect to need a voltage bump on a 7970 just putting that out there unless your talking oc to 1000.

most can do 1200-1275 ish if you bump voltage and change fan profiles.

and while your right about not wanting to touch it .. saves you a rma if it works fine with a voltage bump might not be anything wrong with the card could be just under volted a touch and that's a quick way to find out.
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  #14 (permalink)  
Old December 10, 2012, 06:26 PM
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Quote:
Originally Posted by sf101 View Post
if your going to oc you should ALWAYS expect to need a voltage bump on a 7970 just putting that out there unless your talking oc to 1000.

most can do 1200-1275 ish if you bump voltage and change fan profiles.

and while your right about not wanting to touch it .. saves you a rma if it works fine with a voltage bump might not be anything wrong with the card could be just under volted a touch and that's a quick way to find out.
If it requires a voltage bump at rated speeds to run stable then it either isn't binned properly (and thus won't OC at all above the stock speeds), or has an issue with the heatsink/cooler.

RMA is the best idea in my books, but I'm wondering if you've got access to a different system with a different PSU in it? Dirty power from a PSU that's either over rated in the first place, or over extended can cause the issues you describe as well because it makes the vid card's VRMs work harder.

I'm not saying that your PSU is the issue, but it would bite if you got a brand new card back without the issue going away, or if they tested the card at RMA and couldn't replicate the issue.
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  #15 (permalink)  
Old December 10, 2012, 06:28 PM
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I understand in regards to OCing the card, but it shouldn't need a voltage bump at stock speeds.All that tells me is that it is a lower binned part so my card wont OC well even with a bump in voltage compared to a mid to high bin part.Also this card markets itself to the mid to high lvl gamers so a certian lvl of OCing is expected, but if at stock it fails then why spend the 20-30 dollar premuim, best to RMA and get my money worth Eh? XD


Lol got ninja'd there, I don't have the tools to test the quality of voltage but hardware secrets had a decent review of my PSu but it was not stellar on the filtering of voltages.....but again this card has tons of VRMs to filter bad power....and a massive heatsink, the darn thing weighs a tonne lol
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