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post #21 of 38
Quote:
Originally Posted by Jixr View Post

first off, both 480s are $150 total, so if i sell all 3 cards, I'll maybe end up with $3-400

I can understand how a heavily modded skyrim will use up vram, but i hardly ever play skyrim, and when i did, the mods didn't seem to affect the gameplay, frame rates, or visuals.

If you can make $400 you have enough to get a used 4GB GTX 670 since you say you cannot use AMD Cards.

It's 2013, games will require more VRAM. If you had a 1080p monitor, even though 2GB of VRAM is ideal, it wouldn't be as big of a deal. However, you're running a 1440p resolution. You don't really mention what games you want to play or play, but I'll tell you this. Almost all the newer titles put me at, at least 1.5GB of VRAM if not a little more. So I really don't see how 1.5GB could be cutting it @ 1440p when I'm seeing that VRAM usage at 1080p.
post #22 of 38
Up to you of course but I have to say i mostly agree with Big stroonz and here's my reasoning. 1.5gb vram is already not sufficient in many scenarios even at 1080p nevermind 1440 (crysis 2 with maldos textures uses 2.4gb and higher on my 7970). Now you can get away with it for now if youre careful what you use but its only going to get worse as time goes on.

The main kicker here is the longer you wait the less resale value your cards will have to the point they wont even be worth reselling. If you sell em now you can get 1 single card with good performance. But shortly that wont be the case and in order to upgrade youll have to fork over most of the money up front.

Personally i do my upgrades and like to sell off parts at the precipice of their value quickly dropping. That way my upgrades to the newest tech are fairly small investments. For example I sold my SLI 470s awhile ago and grabbed a 7970. The performance is about the same but i got something that will hold its resale value much longer and has far more vram, for little extra. (Sold for about 300 and bought the 7970 for about the same price on sale).

Hope that made sense. GL smile.gif
Edited by Bluemustang - 2/12/13 at 12:52pm
    
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post #23 of 38
Here are the option I would be thinking of

1 . buy the sli GTX 480's and sell them. buy a second GTX 580

2. buy the sli GTX 480's and sell them along with your GTX 580 and get something better like a GTX 670 and pocket the rest.

3. buy the SLI GTX480's and sell them. more $$ for your bed
post #24 of 38
1.5GB of RAM is fine for 1080P/1440P. MaldoHD mod on Crysis 2 may use more RAM if you have it, but I have it mostly maxed out with my single 580 (1920x1200), and it runs fine (although VRAM usage is pegged at 1534 or whatever). Skyrim with all 3 of the Bethesda high-res packs works great, along with several other mods (including Skyrim HD). Again, VRAM is pegged at 1534.

Also, a quality 750W power supply can handle 2 580s easily. My single 580 running on a Rosewill Tachyon 750 with a moderately overclocked QX9650 (and 4 platter drives) pulls about 360W from the wall when gaming (tested with many games, including Crysis 2 + MaldoHD). As my PSU is 80+ platinum rated, that means the power supply is actually supplying about 330W to the components. Granted, full processor load AND full GPU load adds a bit to that (Prime95 and Furmark at the same time pulls just shy of 400W from the wall), but still, I have over 400W of wiggle room for gaming. More than enough for another 580, and to turn my case into a light show. Not to mention, good PSUs can usually supply slightly more than their rated power for extended periods of time, although it's not recommended.

I'd suggest selling the 480s and adding another 580, if at ALL possible. Used 580s generally run $200 on eBay, which I'm sure you could sell the SLI 480s for.
Edited by DrBrogbo - 2/12/13 at 2:42pm
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post #25 of 38
i´d also say sell all 3 cards and get something with 3+ gb vram and use your built in gpa on the 2600k for the time with no video card tongue.gif
post #26 of 38
Quote:
Originally Posted by BiG StroOnZ View Post

If you can make $400 you have enough to get a used 4GB GTX 670 since you say you cannot use AMD Cards.

It's 2013, games will require more VRAM. If you had a 1080p monitor, even though 2GB of VRAM is ideal, it wouldn't be as big of a deal. However, you're running a 1440p resolution. You don't really mention what games you want to play or play, but I'll tell you this. Almost all the newer titles put me at, at least 1.5GB of VRAM if not a little more. So I really don't see how 1.5GB could be cutting it @ 1440p when I'm seeing that VRAM usage at 1080p.
VRAM usage can be misleading. Several games will cache as much memory as is available, but don't actually require that much to run properly (Crysis 2 is a prime example).

Also 4GB 670s have been proven to be of little practical use, even in SLI @ surround resolutions: http://www.hardocp.com/article/2013/01/14/asus_geforce_gtx_670_directcu_ii_4gb_sli_review/9

Personally OP, from the way you described it, I don't think your power supply is the problem. If the PSU was badly overdrawn and OCP kicked in it should shut down the entire system, not just blue screen. You said you both have to downclock the 480s just to get them to run properly anyway. It sounds like one or both cards are faulty.
post #27 of 38
one thing to add, i had a similar problem. i tried 2 x 6pin on one cable on both cards and the rig would freeze, reboot and bsod. then i connected the gpus with four cables and everything worked well. maybe this could help you if you have plugge the powercables like me.
post #28 of 38
Quote:
Originally Posted by smex View Post

i´d also say sell all 3 cards and get something with 3+ gb vram and use your built in gpa on the 2600k for the time with no video card tongue.gif

Agree with this.
Quote:
Originally Posted by Booty Warrior View Post

VRAM usage can be misleading. Several games will cache as much memory as is available, but don't actually require that much to run properly (Crysis 2 is a prime example).

Also 4GB 670s have been proven to be of little practical use, even in SLI @ surround resolutions: http://www.hardocp.com/article/2013/01/14/asus_geforce_gtx_670_directcu_ii_4gb_sli_review/9

Personally OP, from the way you described it, I don't think your power supply is the problem. If the PSU was badly overdrawn and OCP kicked in it should shut down the entire system, not just blue screen. You said you both have to downclock the 480s just to get them to run properly anyway. It sounds like one or both cards are faulty.

Some games will cache as much memory as possible, sure this is true, but to say every game is the reason your VRAM usage is above 1.5GB just doesn't seem plausible.

I saw that review, they are running at 1200p not 1440p. I also like how their performance numbers were actually lower than a 2GB 670 as if that makes any sense; like I believe that for a second. Either way, I don't think that that hardocp review should be taken seriously. There findings contradict everything we understand about higher resolutions and more VRAM. If you want to run every game maxed out, with maximum possible settings (including AA) you are going to need more VRAM. If you don't care about this, then maybe not.
post #29 of 38
OP, there's a modded driver to SLI all of the cards you own (480s & 580) but I can't seem to locate the thread....
I'll update this post when I find it.


EDIT:http://www.overclock.net/t/1205255/sli-2-different-cards-with-proof-guide
Edited by eXXon - 2/12/13 at 6:55pm
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post #30 of 38
Quote:
Originally Posted by BiG StroOnZ View Post

Agree with this.
Some games will cache as much memory as possible, sure this is true, but to say every game is the reason your VRAM usage is above 1.5GB just doesn't seem plausible.

I saw that review, they are running at 1200p not 1440p. I also like how their performance numbers were actually lower than a 2GB 670 as if that makes any sense; like I believe that for a second. Either way, I don't think that that hardocp review should be taken seriously. There findings contradict everything we understand about higher resolutions and more VRAM. If you want to run every game maxed out, with maximum possible settings (including AA) you are going to need more VRAM. If you don't care about this, then maybe not.

I don't think their point was that having more VRAM is pointless. It was that there is a limit to how much VRAM can actually be usable, and with the 256-bit bus on the 600 series cards, you run out of memory bandwidth before you run out of available memory. Even with the 2GB cards.
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