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post #21 of 31
Quote:
Originally Posted by JustSomeNoob View Post

Completely agree! Mine does 1125 at default voltage, and will do 1200 at 1237mV. But I keep it at 1125 because I don't like heat and noise.
I'm very satisfied with my OC at 1125 MHz core and 1790 MHz memory, because it's at the default voltages and runs stable, cool and quiet! biggrin.gif

is that your maximum OC at stock voltage?
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post #22 of 31
Quote:
Originally Posted by Jinny1 View Post

is that your maximum OC at stock voltage?

Yeah, I could probably push 5-10 MHz more on the core at stock voltage (1112mV) but I wouldn't notice a <1% gain in performance. Besides, 100% stability beats 99%. Memory would crash at 1800+ without voltage bump too, so I keep it at 1125 / 1790.
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post #23 of 31
Well. My first card I got can do 1250/1700 like cake at 1.25 voltage. My 2nd card can't do 1200/1700 to save its life not because it can't do it but because it's very funky with the voltage. Too much and it won't be stable, not enough and it won't be stable. I can add 0.05mv and it will be stable adding 0.07mv and it won't be........
     
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post #24 of 31
I bet the fluctuating load voltage makes it impossible to get any kind of stable 24/7 OC going on that 2nd card of yours, if it's that picky.
Now I didn't quite win the silicon lottery myself, but I'm not complaining, my OC gets me where I want to be. biggrin.gif
Good luck with that one, I hope you get the balls on it and get it to do what you want it to. thumb.gif
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post #25 of 31
It's nearly impossible, but it's doable. I've gotten it stable at the 1125/1575 and I think I'll live with that. I don't need to add voltage to card 1 and only .05v to card 2 to get it that stable with 30min of OCCT no errors.

I'd just really enjoy getting the 1200/1600 mark like I can on card one as most can
     
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post #26 of 31
The 7970 owners thread with thousands of posts isn't enough on this subject? We need more random 7970 overclock threads.
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post #27 of 31
Quote:
Originally Posted by JustSomeNoob View Post

Yeah, I could probably push 5-10 MHz more on the core at stock voltage (1112mV) but I wouldn't notice a <1% gain in performance. Besides, 100% stability beats 99%. Memory would crash at 1800+ without voltage bump too, so I keep it at 1125 / 1790.

Thanks i'll use that as a guide when ocing my 7970 smile.gif
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post #28 of 31
Quote:
Originally Posted by hollowxx View Post

375i seen ppl talking too about some bios stuff but i havent touch that cuz i dont know... i just playing with msi only nothing else...

dude... I think the reason you're getting artifacts and such is that you're running at 1299mV. I was able to run 1175mHz at 1175mV, and 1200mHz at just 1218mV stable. I don't think you want to hit 1300mV unless you're trying to pass 1250mHz.
post #29 of 31
Quote:
Originally Posted by flopper View Post

1100 to 1250mhz is common.
1300+ rare often watercooled then.

1310/1700 on air here wink.gif
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post #30 of 31
Got my GigabyteWF 7970 running stable @ 1160/1650, stock voltage. I got through 3DMark11 at 1200/1650 w/ stock voltage but it didnt game consistently stable and I'm pretty happy with 1160. Haven't tried messing with the voltage yet but might give that a try this weekend. The things never seen a higher temp than 61 so I think its got room to play with given a little voltage bump.
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