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Seasonic X650 for i7 970 + 6970 CFX - Page 2

post #11 of 38
Thread Starter 
Quote:
Originally Posted by Wubble View Post
I have heard that the 6950 has a pretty high success rate for unlocking and for it not to unlock is pretty rare.

Also an off topic question. Why is your 6870 voltage so high for those clocks? I got my second 6870 today (First one sent to RMA until it comes back) and I get 1030/1150 on 1.193 volts.

And the X-650 should be fine for what your getting especially if it's 6950's.
Nice, hopefully I get a 6950 that unlocks AND overclocks well.

And yeah, my 6870 is quite awful at overclocking. I've done multiple tests with Furmark, and 1.274v is the minimum GPU vcore my card needs (Sapphire Trixx has voltage increments of around .006v) to hit 975 core. The GDDR5 seems to clock decently though.
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post #12 of 38
I would think more power is needed if you intend to overclock both cards.

But I am no expert. Phaedrus is.
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post #13 of 38
Quote:
Originally Posted by blackbalt89 View Post
I would think more power is needed.
No offense, but you would be incorrect.
post #14 of 38
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
No offense, but you would be incorrect.
Even if I were to overvolt both cards heavily?
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post #15 of 38
I also don't think it's enough, pretty sure this PSU calculator is reliable: http://educations.newegg.com/tool/psucalc/index.html i've tried others as well, they all agree that 650w is not enough.
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post #16 of 38
Quote:
Originally Posted by Phoenixlight View Post
I also don't think it's enough, pretty sure this PSU calculator is reliable: http://educations.newegg.com/tool/psucalc/index.html i've tried others as well, they all agree that 650w is not enough.
it is if you divide in half, neweggs psu calculator is not very good
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post #17 of 38
Quote:
Originally Posted by Phoenixlight View Post
I also don't think it's enough, pretty sure this PSU calculator is reliable: http://educations.newegg.com/tool/psucalc/index.html i've tried others as well, they all agree that 650w is not enough.
You have never used the X650 have you?

That PSU is more than capable of powering an OC'd 970 AND OC'd CF 6970s
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post #18 of 38
Quote:
Originally Posted by Phoenixlight View Post
I also don't think it's enough, pretty sure this PSU calculator is reliable: http://educations.newegg.com/tool/psucalc/index.html i've tried others as well, they all agree that 650w is not enough.
Don't use PSU calculators.
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post #19 of 38
Quote:
Originally Posted by dhopisthename View Post
it is if you divide in half, neweggs psu calculator is not very good
Why would you divide the result by 2?

Quote:
Originally Posted by ohzer0 View Post
You have never used the X650 have you?

That PSU is more than capable of powering an OC'd 970 AND OC'd CF 6970s
No but I have an even better PSU: Corsair AX750 and I wouldn't risk running two HD6970's in crossfire with it.

Quote:
Originally Posted by GameBoy View Post
Don't use PSU calculators.
What else is there to use?
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post #20 of 38
Quote:
Originally Posted by aznofazns View Post
As a second question, anyone have experience unlocking 6950's? Is the success rate pretty high? Figured I would just ask here for some quick input.
I have a pair of Sapphire 6950's unlocked, it took no time to do it but if you are going to cool with water do it before you swap the stock fan off as you need to unlock the cards one at a time. Good luck
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