SLI or 7990 for 5040x1050

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lostmenoggin

lostmenoggin

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Jul 31, 2013
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Recently hooked up 3 1680x1050 monitors to my Gigabyte GTX 760 4GB card and lost my 100fps in BF3 ultra mode abilites (yea boo hoo lol). Anyways I was thinking about going SLI to get more power to drive the 3 monitors at higher settings but 7990s are STUPID cheap right now since AMD is discontinuing them for the newer cards coming out. 7990 is running between 6-700 bucks which is right around the same price as an SLI setup, not bad for a dual GPU setup. Plus the 7990 only takes up 2 slots (3 for the PowerColor) and I have almost NO space left to put anything (thinking about a new mobo too) though I could make it work.

Which would be better for driving the 3 monitors?
 
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Gam3r01

Gam3r01

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Jan 12, 2013
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Though I agree with the games, the frame pacing does not, I repeat not, affect multiple monitors. So the fps issues here from the microstuttering is still present in eyefinity. I would say get the second card, OR wait for the 9000 series launch and maybe get one of those cards.
 
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17seconds

17seconds

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Jul 27, 2010
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You might find this hard to believe, but a pair of GTX 760s in SLI will give smoother and more fluid gaming and will be a much wiser choice. Why?

1) Crossfire frame pacing does not work on multiple monitors. That means your performance will feel like only one GPU is working, along with the associated jitter and microstutter. This is the single most important reason to avoid Crossfire on multiple monitors. Even on a single monitor, there are numerous articles where the comparison between Crossfire and SLI has consistently favored SLI. Here's a blind test between a GTX 690 and the 7990 from Tom's Hardware. GTX 760s in SLI will be very close to the GTX 690 in performance:
http://www.tomshardware.com/reviews/radeon-hd-7990-geforce-gtx-690-frame-pacing,3599.html

2) The 7990 is hot and loud with a well documented coil whine that Tom's Hardware described as a "parasitic noise". Here's a sound recording:
http://www.tomshardware.com/reviews/radeon-hd-7990-review-benchmark,3486-15.html


Meanwhle, here's what Guru3d has to say about GTX 760s in SLI:

Quote:
"But fair enough, over time NVIDIA has done a great job, micro-stuttering is a thing of the past and there are hardly any driver issues. And with triple A game titles, NVIDIA will have a driver for you at launch day ensuring your multi-GPU solution is supported."
http://www.guru3d.com/articles_pages/geforce_gtx_760_sli_review,19.html

So don't kid yourself that $650 for a 7990 is a better deal than another $250 GTX 760.
 
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bryonhowley

bryonhowley

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Oct 24, 2011
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Well I have two rigs one with a Crossfire HD 7950 and the other with a Crossfire HD 7970 and have never had a problem with stutter on either rig. Also have a SLI GTX 670 and both of my AMD based rigs run every bit as good as my intel. All three of them are running Eyefinity/Surround setups on three Asus 27" monitors at 5760x1080.
 
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lostmenoggin

lostmenoggin

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Jul 31, 2013
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Hmm. I was really liking the idea of a card that takes up the same space as my current card but drives my monitors better. If I SLI I have to remove a slot fan that works great at cooling the case (gpu runs 10* cooler) and a 4+1 port USB PCI card but I dont think that should be an issue... I also want to eventually get 3 1080 monitors but that might not be until tax return time. I dont think I can ever go back to single monitor gaming.
 
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17seconds

17seconds

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Jul 27, 2010
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All the same, the GTX 760s will run much cooler than a 7990, so you won't need the extra case fan as much anyway. With the triple fan setup on the 7990, all the heat stays inside the case warming up the other components, so extra cooling is mandatory.

(Note: Apparently AMD sent our cherry-picked versions of the 7990 for the original reviews.)
http://www.tomshardware.com/reviews/radeon-hd-7990-crossfire-overheat,3539-2.html
gpu_temperature.png

tm1.png

noise.png
 
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