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GTX Titan 2/3/4-way SLI owners: which PSU are you using? - Page 3

post #21 of 174
Quote:
Originally Posted by Fieldsweeper View Post

1 way, buy a 800 + two way buy 1000+ and for three way go 1200+, especially if you want to have water cooling, which if you are going with sli titans, and you have air cooling your priorities are wrongly placed lol, just saying

1 way 750 watts
2 way 1000 watts
3 way 1200 watts
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post #22 of 174
Quote:
Originally Posted by shilka View Post

1 way 750 watts
2 way 1000 watts
3 way 1200 watts
They don't draw THAT much power tongue.gif
Titans are only a tiny bit more power hungry than 7970s. A single overclocked Titan with the stock BIOS draws about 270W, with a modded BIOS you're still looking at 320W or under. It depends on the CPU you're running but -
550W - One Titan
750W - Two Titans
1000W - Three Titans
1200W - Four Titans (As long as it can supply the current required)
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post #23 of 174
Thread Starter 
Uhhhh yeah this thread just went all bad. Thanks for the input guys... I went with the EVGA NEX1500 Supernova.
post #24 of 174
Quote:
Originally Posted by AndyM95 View Post

They don't draw THAT much power tongue.gif
Titans are only a tiny bit more power hungry than 7970s. A single overclocked Titan with the stock BIOS draws about 270W, with a modded BIOS you're still looking at 320W or under. It depends on the CPU you're running but -
550W - One Titan
750W - Two Titans
1000W - Three Titans
1200W - Four Titans (As long as it can supply the current required)

Yes i know that

I meant those numbers as a max you sould go for not the power draw of the cards
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post #25 of 174
Quote:
Originally Posted by Fieldsweeper View Post

edit your post because your math was wrong? LMAO

actually I said 50% never said anything lower, OH you must mean the fact I said AT LEAST 750-850, true EXACTLY 50% would be 900 total watts, if the draw required 600 watts. however its still estimates, one 500 watt power supply will not produce the same as the next, some have differences and inefficiencies, same with all electronics, take your CPU that's why there are "good batches" and "bad batches"even within the same brand. although same branding tends to me in closer tolerances depending on quality.

so spend 2000+ on some titans then 50 on a ps, and go bare min, dont come asking for help when your ps goes out on you.

rolleyes.gif

I edited so I could add your post to my previous post instead of double posting. I didn't change any numbers.
Quote:
Originally Posted by Fieldsweeper View Post

I usually Like to have a 50% buffer or more, hense why my build has a 1200 watt ax1200i

rolleyes.gif
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post #26 of 174
Quote:
Originally Posted by shilka View Post

Quote:
Originally Posted by Fieldsweeper View Post

1 way, buy a 800 + two way buy 1000+ and for three way go 1200+, especially if you want to have water cooling, which if you are going with sli titans, and you have air cooling your priorities are wrongly placed lol, just saying

1 way 750 watts
2 way 1000 watts
3 way 1200 watts


smh
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post #27 of 174
I will argue with anyone that thinks a single 1200-1350w psu is enough for a 4way setup. Titan,680,580,480 don't matter. It's not going to cut it with a heavy overclocked CPU an gpus being overclocked. You need at min a pair of good 1000w psu's. I have used lots of 3way an 4way setups now over the years an my current setups are a 980x an tri sli 470s an the king of crazy the Sr2 with x5680s an 4 GTX 480s.. Right now IM having issue running the sr2 due to not enough power. An I run a OCZ Zx 1250w an Zx 1000w an it just can't cut it. I found this morning adding a 750w to just power bottom card zx1000 to power other 3 an zx1250 for board/CPUs I was able to hold better overclocks an it was way more stable.

So all in all if your going to play with the big 3/4 top end gpus do yourself a favor an get a dual power supply setup it will save you a headache.
post #28 of 174

So would a Corsair AX750 be enough for a 2 way SLI? Also note i have a 3770k at 4.5.

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post #29 of 174
Quote:
Originally Posted by CBZ323 View Post

So would a Corsair AX750 be enough for a 2 way SLI? Also note i have a 3770k at 4.5.

Yes
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post #30 of 174
Quote:
Originally Posted by CBZ323 View Post

So would a Corsair AX750 be enough for a 2 way SLI? Also note i have a 3770k at 4.5.

 

More than enough:

 

http://www.guru3d.com/articles_pages/geforce_gtx_titan_3_way_sli_review,4.html

 

With two GTX Titans under full load in their system, their PSU pulled 598W from the wall outlet. Their CPU was idling, so I have to add about 150W for the 3770K at 4.5 GHz (but 150W is more realistic for almost 5 GHz).. So with the two GTX Titans and the 3770K under full load all at the same time, the PSU would then be pulling 748W from the wall outlet. That means if the PSU is 90% efficient while pulling 748W from the wall outlet, then the computer would be pulling about 673W from the PSU. Your actual gaming power draw will be closer to about 600-650W.

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