Is 3 way SLI worth it, and will my PSU support it?

I currently have 2 GTX 770s in SLI now, and got another 770 that I could sell or put it on my computer. Is it worth it, and will my PSU support it?

My Specs:
case: Corsair Air 540
Mobo: Asus Maximus VI Formula
CPU: i7 4770k @ 4.4Ghz
CPU Cooler: Kraken x60
RAM: 16GB Corsair vengeance 1600mhz 2x8GB
GPU: 2x GTX 770 SLI
PSU: Corsair RM850
4 answers Last reply Best Answer
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  1. I mean... You'd be ok with the psu.. i guess. It might push it a bit. I mean.

    Here is my standard:
    400-650W = 1 card
    700-900W = 2 cards
    1000+ = 3 cards

    Honestly your not gona need a better pc. Its already beast :)
  2. Your system is a great system right now. Besides that fact, I would not recommend 3 way sli on that motherboard. Yes you can do it, but the third card will be running at a reduced speed and seeing as 3 way sli does not scale too well it would be a waste of money if you bought a new PSU. The performance gain would be mediocre compared to the extra price of a new PSU, and extra heat the third card would put out. Sell the card and then save the money or use that money to get a better screen or something? This is all personal opinion and remember, in the end its up to you.
  3. Best answer
    I don't know if 3-way SLi is worth it, the furthest I have ever went is 2-way SLi and I have small concerns about that because even with the highest performing graphics cards I still get micro stuttering (frame pauses) which affects my gaming experience. You'll need to decide how much the little niggles in your 2-way setup annoy you.

    PSU, google is god. You psu has cables to support 3-way SLi but I have misgivings about using a 850W supply for 3-way SLi. I'd be looking for a 1kW supply. I've used a 850W supply before for a pair of GTX 580s in SLi and an overclocked i7-3930K, it ended in an unstable system, lots of crashes and a few major upgrades to get it stable again.
  4. Yeah, that's what I was thinking. It's not worth it. I will sell the other card. Thanks for the fast replies!
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