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H20 580 vs SLI 480  

post #1 of 38
Thread Starter 
Alright, here is the deal

My room mate picked up a GTX 690 from a guy who works at Nvidia for $700, and in so, he has offered me his two reference 480's for $150 ( for both )

I currently have a gtx 580 with a universal waterblock that has been overclocked to 920mhz and pushes my 2560x1440p monitor quite well.

But, I only have a 750w PSU, and running dual 480s plus my 2600k BSOD'd my system very quickly in BF3

So. here are my ideas, my budget is very very limited, as I was planning on buying a new bed this weekend.


- Just keep on using my 580
- Buy the 480's, and buy a cheap PSU to power one of the cards ( is that safe? ) and try to sell off my 580 its been custom modded, so cosmetically its not in the best shape, probably only worth 150-200
- Buy the 480's, turn around and sell for profit, or try to trade for a single 580, then SLI them.

Note: for whatever reason, My roommate and I both have to downclock the 480's to get them to play nice in SLI, in stock clocks, it causes some sort of conflict and crash

Obviously the 480s are newer, but run faster than a 580, but the power draw and temperatures are pretty crazy high from my WC'd 580 that hits 60* at most.

System Specs:
i7 2600k that i know is good for 4.8 stable, obviously not with the 480's
korean 27" 2560x1440p monitor ( 66hz )
8 gigs ram
7 120mm fans
XSPC pump 360mm radiator, rez.

My room mate had a 1200w PSU, so he had no trouble running the 480's
Ideas, tips, comments, etc all welcome
Edited by Jixr - 2/11/13 at 8:31pm
post #2 of 38
If you can id trade them in for another 580 for sure.
    
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post #3 of 38
Thread Starter 
I would do so, but that would require me sitting on them on Craigslist for a while until someone is willing to trade, which may never happen.

And i'm still unsure if my 750w PSU can handle two 580's
Edited by Jixr - 2/11/13 at 8:27pm
post #4 of 38
As long as you have the cash, I would definitely buy them if only to turn around and resell them.

My GTX580 isn't custom modded but it is liquid cooled, I'm running at slightly higher clocks that you. Personally I don't think I would swap to SLI GTX480's. After all the hype about how hot GTX480's run, I dont think I'd switch unless they were watercooled. Still a great deal.
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post #5 of 38
Quote:
Originally Posted by Jixr View Post

I would do so, but that would require me sitting on them on Craigslist for a while until someone is willing to trade, which may never happen.

And i'm still unsure if my 750w PSU can handle two 580's

Obviously doesn't have to be a direct trade. Thatd be unlikely. Just sell them then buy a 580.

As for SLI on a 750w. Thats cutting it pretty close. I know sli 470s can run on a 750 but 580s appear to use a bit more power. Youd probably be ok if not OCd.
    
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post #6 of 38
Thread Starter 
in the little while that I was playing BF3, i was hitting 75ºc on each card, I have a single slot spacing between the cards, so they are not sandwhiched together, but the power they provide is enough to push me into the solid 60's in BF3

Note both the 580 and 480 have 1.5 vram
post #7 of 38
If you are running 1440p you want more VRAM, 480 SLI may be more power but will be a down grade in terms of 1440p performance. I would just sell your 580 and pick up a 7950.
post #8 of 38
Quote:
Originally Posted by BiG StroOnZ View Post

If you are running 1440p you want more VRAM, 480 SLI may be more power but will be a down grade in terms of 1440p performance. I would just sell your 580 and pick up a 7950.

480 and 580 have the same amount of VRAM (as is mentioned by the OP in the post right above yours), so the 480 SLI would be considerably faster for 1440p.
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post #9 of 38
What 750w psu are we talking about?

You could get the gtx 480s and undervolt them to 1v if isn't at that voltage already and run 700Mhz. If it's a decent psu, then it will run fine. Two stock 480s are a beast in sli.

You almost have to get them for $150, too good a deal to pass up!
    
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post #10 of 38
Quote:
Originally Posted by juano View Post

480 and 580 have the same amount of VRAM (as is mentioned by the OP in the post right above yours), so the 480 SLI would be considerably faster for 1440p.

You are missing the point. The 580 and 480 both lack the appropriate VRAM to support that resolution, unless of course it's a 580 with 3GB of VRAM which exists. The choices seem nonsensical considering what he wants to spend on both 480's and what he can get for his 580 sold.

7950 is the best solution.
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