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PSU for 2Way SLI and good overclocks

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  • SLI
  • Components
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August 8, 2013 1:56:32 PM

Okay, this is my first time posting on the forums here. :D 

I built a computer back in February and put a crappy PSU in it, planning on it being temporary. This PSU was a cheap 750w, I have been running this computer on the Integrated Intel HD4000 graphics on my 3770k. Now I am picking up some GTX 680s and need a better power supply (honestly I've been scared the run it with the one I have now).
Here are my specs:
i7 3770k
32GB RAM 4x8GB
ASRock Z77 Extreme 4
2x Asus GTX 680

I also have a SSD and a 1TB Seagate Barracuda for storage
I have a PCI-E Network card (which will most likely be coming out in the near future)
Also at any given time I might have 5+ USB devices plugged in, Including multiple USB external drives, Multiple Thumbdrives, and Wired keyboard and mouse. (this stuff probably isn't SOO important)

I plan on having a watercooling setup with 2x RX 360 Rads in push pull, and 2 universal MCW82 universal GPU blocks, and an XSPC raystorm cpu block running to a Rad box that will most likely be sitting beside or under the case. (If anyone knows that a single pump should be good to run that I would appreciate the info, also would like to know what pump they think would run it. Otherwise I'll probably run Dual D5 Pumps)

I'm also running all of this in the Rosewill Thor V2 case and I am running all of the stock fans inside the case. Including the Led fan in the front.


Okay, now that all of that is over I would like to thank anyone that provides help ahead of time and I'm not trying to start a fanboy war, I just want suggestions of good PSUs and the target wattage I should be looking for.

Also, If I can keep it under $200USD I would love it.
Oh also, is it an option to run all of my watercooling stuff off of another power supply indefinitely? If so I will run all of that from the old power supply and put it in the Radbox so I don't have to route cables to my case.

Also(#2) Please noone tell me to just go to the PSU calculator because It's not going to recommend a PSU and even if it could, I would like explanations for the choice it made lol.

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August 8, 2013 2:15:47 PM



So 850w should be enough? I thought it would be but I honestly didn't know how much I would need after the watercooling and overclocking everything

I also forgot to mention that I would prefer a modular PSU, It doesn't really have to be fully modular but I would like it to be so that I could sleeve/resleeve the cables
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August 8, 2013 2:19:17 PM

I_Luv_Cheetos said:


So 850w should be enough? I thought it would be but I honestly didn't know how much I would need after the watercooling and overclocking everything

I also forgot to mention that I would prefer a modular PSU, It doesn't really have to be fully modular but I would like it to be so that I could sleeve/resleeve the cables



Yes. I have nearly the same setup as you and am using that exact psu right now. Works great.
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August 8, 2013 2:21:32 PM

I think 850W would be enough, both the ones I listed are semi-modular. You will end up using all the cables that are not modular any ways so they don't get in the way. The next step up if you feel you need more juice would be a 1000W PSU, and I am almost certain that should be plenty.

Here is one that has good reviews http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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August 8, 2013 2:26:27 PM

Well, I wouldn't use less than 750W, and 850W would be a lot more comfortable.
There are other choices, but just to keep this simple, I'd probably choose this Seasonic-built 80+ gold XFX full modular: http://www.newegg.com/Product/Product.aspx?Item=N82E168... for $150, or $135 after MIR.
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August 8, 2013 7:21:11 PM

burdenbound said:
I think 850W would be enough, both the ones I listed are semi-modular. You will end up using all the cables that are not modular any ways so they don't get in the way. The next step up if you feel you need more juice would be a 1000W PSU, and I am almost certain that should be plenty.

Here is one that has good reviews http://www.newegg.com/Product/Product.aspx?Item=N82E168...

yeah the fully modular isn't that big of a deal but i wanted it so it would be easier to sleeve my cables thanks for the psu suggestion!

Quote:
Well, I wouldn't use less than 750W, and 850W would be a lot more comfortable.
There are other choices, but just to keep this simple, I'd probably choose this Seasonic-built 80+ gold XFX full modular: http://www.newegg.com/Product/Product.aspx?Item=N82E168... for $150, or $135 after MIR.

great deal for an 850w, thank you for the suggestion. Are you guys sure i have enough headroom for the watercooling components? or would i be able to run that off of the old psu?
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August 9, 2013 3:17:43 AM

Well, you call it "crappy," so I'm thinking its got a liar-label on it, meaning it isn't good for anywhere near 750W. In that case, it would not be safe to use. What brand and model is it?
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August 9, 2013 11:50:49 AM

Onus said:
Well, you call it "crappy," so I'm thinking its got a liar-label on it, meaning it isn't good for anywhere near 750W. In that case, it would not be safe to use. What brand and model is it?


If I'm not mistaken it is an older model of the PSU here
My power supply looks almost exactly like that, only difference is that my PSU has black sleeves and the plug/switch are also black instead of blue
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August 9, 2013 11:59:14 AM

Oh ouch. That's an Apevia, and jonnyguru roasted a Warlock some years ago, finding it to be grossly overrated (typical of the brand). You NEED to replace it. It might be good for 600W, but I'm not sure for how long or how cleanly.
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August 9, 2013 3:38:49 PM

Onus said:
Oh ouch. That's an Apevia, and jonnyguru roasted a Warlock some years ago, finding it to be grossly overrated (typical of the brand). You NEED to replace it. It might be good for 600W, but I'm not sure for how long or how cleanly.

exactly why i'm changing it, i originally couldnt seem to find any terrible reviews on it but i found out shortly after i got it that apevia in general are terrible PSUs i figured that it would be good enough to run fans and whatnot but i didn't know about it being clean enough to run a d5 without ruining it

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Best solution

August 9, 2013 9:23:11 PM

1050w \ Seasonic \ Gold Certified \ Modular

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: XFX ProSeries 1050W 80 PLUS Gold Certified ATX12V / EPS12V Power Supply ($139.99 @ NCIX US)
Total: $139.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-08-10 00:22 EDT-0400)
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August 10, 2013 8:28:34 AM

Overkill, but it's certainly a great deal. Even the Gold ones can drop off pretty quickly on very low loads though (where a PC spends much of its time).
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