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SLI worth the potential issues? scaling? 120hz? - Page 2

Poll Results: SLI worth the value/potential issues/scaling?

 
  • 72% (35)
    SLI is worth it..never have problems..scaling is always very good (75+)
  • 25% (12)
    SLI is 50/50..its really good sometimes...horrible other times.
  • 2% (1)
    SLI is never worth it...too many issues, scaling not always great...no peace of mind
48 Total Votes  
post #11 of 22
Thread Starter 
Do you guys think my 750w PSU below can handle 2 x Zotac AMP! GTX 570 OC'ed to 780MHz core clock at full load (CPU will be OC'ed also)?

ZOTAC AMP! GeForce GTX 570: http://www.newegg.com/Product/Product.aspx?Item=N82E16814500200

Antec High Current Gamer Series 750W: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Power+Supplies-_-Antec-_-17371049
Edited by malikq86 - 10/28/11 at 5:49am
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post #12 of 22
Quote:
Originally Posted by malikq86;15485311 
Do you guys think my 750w PSU below can handle 2 x Zotac AMP! GTX 570 OC'ed to 780MHz core clock at full load (CPU will be OC'ed also)?

ZOTAC AMP! GeForce GTX 570: http://www.newegg.com/Product/Product.aspx?Item=N82E16814500200

Antec High Current Gamer Series 750W: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Power+Supplies-_-Antec-_-17371049

750W might be cutting it a little close, specially if you're OCing the cards. I'm not saying it's a fire hazard, but I wouldn't be comfortable with it.

If I were in your place, I'd go with a high quality 850 unit, the HX850, for example.
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post #13 of 22
you wont notice the downsides of multi GPU as much until you can swap in a single GPU that can give you at least roughly 80% of the performance what you had before with the dual GPU setup. If microstutter isn't apparent enough to be annoying, it will just feel smoother when you go back to single GPU.

Another downside is inherent input lag, although if you're pumping out enough frames and your monitor is already fast in that regard, that aspect will be largely negligible.

I try to avoid multi GPU as much as I can but alas BF3 proved too much for my single GTX580 and 28nm GPUs we were supposed to have by now have seen delay after delay.

Quote:
Originally Posted by malikq86;15485311 
Do you guys think my 750w PSU below can handle 2 x Zotac AMP! GTX 570 OC'ed to 780MHz core clock at full load (CPU will be OC'ed also)?

ZOTAC AMP! GeForce GTX 570: http://www.newegg.com/Product/Product.aspx?Item=N82E16814500200

Antec High Current Gamer Series 750W: http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049&nm_mc=OTC-Froogle&cm_mmc=OTC-Froogle-_-Power+Supplies-_-Antec-_-17371049

Full load, as in game? Yes. I'm currently running SLI 580s (@ ~780) with a heavily overclocked 2600K and do just fine on a 760W, although a "power virus" like furmark will likely be able to push you beyond 800W.
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post #14 of 22
Well, i've had alot of SLI and a single crossfire setup, and the scaling with SLI/Crossfire is worth but recently as i started to take my COD alot more serious, i can feel that SLI is causing alot of Micro-stuttering.

This is the major problem, when i had 1x GTX 570 and played on my 120 Hz monitor i was beasting, Then i added the second GTX 570, and ran SLI, but now it almost feels like its 60 Hz, you got that kinda laggy, slow feeling again.

So if you are casual player, go for SLI

If you are hardcore gamer, but not playing at on a high level, go for SLI

Before this wasnt bothering me, because i played on 60 Hz, and going from 60 to 120 hz, is the same as going from a 5400 RPM HDD to a SSD. But unfortunatly SLI/Crossfire ruins the 120 Hz feeling, with the stuttering.
post #15 of 22
the only times I'd consider SLI a good option is when you NEED it in order to get that extra performance, or when the price/performance is SIGNIFICANTLY better than what is offered by a single card. Even then it depends a lot on the games you're playing.

Scaling isn't too good on a lot of games, microstutter sucks terribly, just about every new release has graphical issues until its patched and/or new drivers come out, increased temps, increased power consumption, overclock limitations due to one card performing worse than the other or not having as good cooling... its just a mess really.

I never had to worry about any of that stuff before I started using SLI. With all that now known, I'd gladly pay another 5-10% to get similar or even (slightly) worse performance out of a single card rather than go with SLI. That said, It's still entirely viable if you're willing to deal with the issues and for me that comes down to price/performance ratio.
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post #16 of 22
How is it with cards like GTX 590, and the ATI 6990. Do they microstutter as well or ?
post #17 of 22
loving my SLI, my first dual gpu solution, too.

zero problems, every driver for any game came before the game was released so far.
post #18 of 22
If it's your first venture into multi GPUing, I would go for a pair of nVidia cards. They are more forgiving than Crossfire in many respects.

Drivers are easier to handle for starters, then you have the chance of creating your own profiles for games that don't support SLI out of the box using just the nVidia control panel.

For instance, I set SLI AA mode for games that generally only support Single GPU so my second card does get to do some work and doesn't go to waste. Don't have that luxury with Crossfire as it stands.

Down the road, depending on what is out, and you have gotten use to what happens when new games come out and such, a pair of Radeons crossfired can usually offer more bang per buck. (Driver support permitting)
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post #19 of 22
My thoughts are to avoid SLI unless it's the only way to get the performance level you need NOW. If you look at SLI as an upgrade path, as in "I get another card for SLI in a year or so", don't even bother for you'll be better off performance/capability wise selling that old card "in a year or so" and replacing it the latest generation card (I've been down this path and learned the hard way). Not to mention the air cooling needed for SLI is considerably noisier (everyone seems to ignore this).
post #20 of 22
Crankx - I registered here to post a reply to your comment about the SLI 570's.

I too have a 120hz monitor, and when I ran a single GTX570 I used 3DVision to force 120hz for any 3D application, and all was well.


Yesterday I installed a second GTX570 thinking I could have more of a good thing, however now apparently I have to pick from either using 3D Vision, or having SLI performance.

If I choose 3D Vision, I get terrible performance (~85-95% of a single GTX570) and both cards are loaded to 99% (waste of power), even when Stereo3D is not being actively used.

In order to get the full SLI performance of two GTX570's, I have to disable 3D Vision completely, which means I have no way of forcing 120hz in games.

Now, Crysis is using 50hz !

This is very ridiculous, and I feel I haven't gotten my money's worth, so I might sell the card soon.


I just wanted to post here to back up your claim of going from one GTX570 feeling very fluid and smooth on a 120hz monitor, to two GTX570's feeling like ****.
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