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[Official] MSI GTX 680 Lightning Owners Club - Page 373

post #3721 of 7827
I have a very searous question.and don't comment unless you know what your talking about..is 850 enough watts for 2 lightnings 3770k 7 high performance 140mm fans and usual stuff like hard drive.lights exc..
snitchkilla
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snitchkilla
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post #3722 of 7827
It is unless you're able to overclock the cards more then 1400mhz. If you can get both above 1400mhz then no you need more.

Had a 2700k @ 5.0ghz and both lightnings at 1420mhz and it pulled over 900w from the wall.
post #3723 of 7827
What driver have you guys had the best success at with these bad boys? I used to be able to get up to 1415mhz when I was using 306.23 but now on 307+ I can barely make +125 and it still crashes a lot. I don't really want to go back to the 306 though because it breaks several of my games with surround.
post #3724 of 7827
304.79 has proved the best for me overclock wise. Tried all new drivers and always go back to them.
post #3725 of 7827
Quote:
Originally Posted by GenoOCAU View Post

304.79 has proved the best for me overclock wise. Tried all new drivers and always go back to them.

Thanks I guess I'll give that one a go. I was able to OC much higher before the newest set of drivers, undoubtedly Nvidia enforcing its "green light" agenda one way or another. I'm pretty sure this will be my last green team card.
post #3726 of 7827
Yes both cards can clock over 1400mhz. I had them to 1410 then I had a power down. Scared the crap out of me..now I know why..I need at least 1000w.. u think I should just go 1200?.if I would have known I wouldn't have bought e h100 and my corsair platnums...@#$#@!!!!! But the mpower and I7 are way better then the sabertooth and 3570k..by far.
snitchkilla
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snitchkilla
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post #3727 of 7827
Quote:
Originally Posted by dph314 View Post

If I was going to go through the trouble of setting up a loop, I would definitely spend the little bit more to get the full-cover block. But yeah what are VRM temps? Mine were always in the 50C's even at 1.42v and I'm on air.

problem with full cover block is that it doesn't actually cool the gpu as well as a universal block... vrms are about 80 even with the extra heatsinks but im guessing if i redirect a fan and grab some more heat sinks it should work, mem is arround 60 - 70 under load which is a bit streched for my tastes so ill either get the full cover block or more heatsinks...

gpu is always under 40 even at full load, 36-38 seems to be the max it ever gets
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post #3728 of 7827
Quote:
Originally Posted by magiwizard View Post

Quote:
Originally Posted by dph314 View Post

If I was going to go through the trouble of setting up a loop, I would definitely spend the little bit more to get the full-cover block. But yeah what are VRM temps? Mine were always in the 50C's even at 1.42v and I'm on air.

problem with full cover block is that it doesn't actually cool the gpu as well as a universal block... vrms are about 80 even with the extra heatsinks but im guessing if i redirect a fan and grab some more heat sinks it should work, mem is arround 60 - 70 under load which is a bit streched for my tastes so ill either get the full cover block or more heatsinks...

gpu is always under 40 even at full load, 36-38 seems to be the max it ever gets

Ah, I see. Yeah a fan would help a lot. I replaced the stock HAF X side-panel fan with a AeroCool Shark 140mm and it brought all 3 temps down almost 10 degrees each.
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post #3729 of 7827
I was in the same situation snitch, ended up getting a 1200watt to have ample headroom. It's better to be safe then sorry imo! At stock clocks and voltage these cards are pretty power efficient, but after 1400 MHz with 93+mV they start slurping down the power!
post #3730 of 7827
Ya I'm pretty poed cause I could have bought a 1250 ocz zx for 40 more then my zx 850...but live and learn. From now on every thing I buy will be big!!!. I figured every thing now and in the future would be power efficient and 850 would be plenty...man was I wrong
snitchkilla
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snitchkilla
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ocz zx 1250 nzxt switch 810 razor naga steel searies 
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