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Discussion Starter · #1 ·
I bought a Asus IV Maximus Extreme-Z board today to give me the ability to do tri sli if I so desire since I game at 7680x1440 .. All really depends if I can find a good deal on a 3rd evga 670 4gb sc.

I am using it in sli right now.

but is tx750 enough? It obviously doesn't have enough power adapters for anything more than two cards, so I would have to use molex adapters for 3rd card, but is 750w enough?

2600k @ 4.6, ssd, hard drive, leds, and the case is a CM Storm Stryker(just ordered it too), so only a couple of fans.

I have ran some calculators based on my system and from the calculators it looks like it could be enough, but I wanted human opinions.

Thanks.
 

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A quality-made 650W PSU is enough:

http://www.guru3d.com/articles_pages/geforce_gtx_670_2_and_3way_sli_review,4.html

With three GTX 670s under full load in their system, their PSU pulled 583W from the wall outlet. Their CPU was idling, so I will add 150W for an overclocked 2600K to 5 GHz (I can prove it). I know yours is at 4.6 GHz, but still. So adding a the 2600K at 5 GHz under full load to the three GTX 670s makes the PSU pulling 733W from the wall outlet. So if the PSU is 85% efficient while pulling 733W from the wall outlet, then that means the system is pulling 623W from the PSU. Of course, this is unrealistically high. Your actual gaming power draw will be closer to about 525W to 575W.

The TX750 can deliver 750W continuously, so it's still overkill with three GTX 670s.
 
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Discussion Starter · #3 ·
good news! Thanks!

I suppose the molex to 6+2 pin power cable adapters x 2 wouldn't create issue either?
 

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Quote:
Originally Posted by Descadent View Post

good news! Thanks!
You're welcome!

Quote:
Originally Posted by Descadent View Post

I suppose the molex to 6+2 pin power cable adapters x 2 wouldn't create issue either?
Not with a PSU like this one. ;)
 
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