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GTX 660 SLI

post #1 of 10
Thread Starter 
Hi,sorry about my english..
I just sold my Sapphire 6950 2gb dirt 3 edition(for 180$) I want to buy two GTX660.. Lot due to a significant jump in the performance compare to a single 7970 or GTX670, even thinking for the future.
This video and some internet sites comapares quite impressed me (the guy have same cpu as mine):
http://www.youtube.com/watch?v=liiwHhPIhVA
a. my board is PCI Express 16X8 not 16x16, I looked deep into the internet and realized that the difference in performance is really negligible between the two modes, so it's not so relevant(I play 1920X1080 and 1920X1200,only one monitor).thats true?
b.This is my PSU:
http://www.tweaknews.net/reviews/thermaltake750w/
Is he supposed to be a problem because I really not interested upgrade it right now, I do not want problems with blue screens, instability, and so on.
c.If the answer to section B is not a problem, then, like you see in the picture:
http://www.tweaknews.net/reviews/the...750w/img/2.jpg only two red ports of six pins(PCI EXPRESS) ... How is recommended to connect two GTX660? If it possible at all?
http://www.tweaknews.net/reviews/the...750w/img/5.jpg
my spec:
AMD FX 8350 | Gigabyte ga-990xa-ud3 rev.3 | Antec kuhler h2o 620 | G.Skill 8gb 1866mhz cl9 | Thermaltake toughpower 750w PSU | Sapphire 6950 2gb dirt 3 edition(sold)
Thank you for your help.
post #2 of 10
While 660 SLI has a very good price/performance ratio, it only has an effective VRAM of 2GB. Although its fine for todays games, the situation may very well change after ~7 months when the new consoles launch. I'm pointing this out to you since you mentioned that you are thinking about future-proofing with this GPU setup. Sadly, 2GB may not be very future-proof.

If you can wait till the 23rd, the 700 series cards will be announced and launched on that day. You may find a better GPU (or GPUs) from amongst those cards. The GTX 780 will be a cut-down Titan with about ~80-90% of the performance of a Titan at a price of (hopefully, by the rumors) $500-$650. It will perform equal to or better than a 660 SLI setup (since 660Ti SLI equals Titan in performance, FPS-wise) and have a VRAM of 3GB. Its a win-win if its within your budget.

With 3GB of VRAM becoming the standard with the 700 series, 2GB will be a liability even at 1080p. So I suggest you reconsider getting something with at least 3GB of VRAM and I strongly urge you to wait for the 700 series cards.
3770K | Titan
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3770K | Titan
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post #3 of 10
Thread Starter 
I accept your recommendation, the problem is in my country I have to pay taxes so that if the video card is priced in the U.S. $ 500 I need to add to this another $ 150-200(taxes) or so ... that's exactly the problem and I have a limited budget ... for example EVGA GTX680 Classified 4GB GDDR5 DX11 2xDVI HDMI DP PCI-E cost me $ 743 in my country (in Amazon its $ 550) and only if I go to the most southern city where no VAT!!! merely for that matter two GTX 660 cost me $ 500 over there(and this is my final budget).
I understand your point 100% but I guess 7 series goes up really expensive in my country..
post #4 of 10
I was in the same place you are right now, first bought a single GTX 660, I was pretty happy maxing out on some games other had to tone down the SSAA to get playable frame rates, then wondering around the internet I found this video and after seeing by how much it beats the GTX 680 for so much less money got me curious so I started looking for more info and found this post-flame-small.gif| GTX 660 (Non-TI) Owners Club |post-flame-small.gif saw the results people were having in benchmarks at stock and overclock speed, I was sold! 2 months after buying the first one I bought a second one for $180.00 bundle with Metro Last Light and 3Dmark 2013, never been so happy, playing games on ultra setting with over 60fps! have them overclocked to1241Mhz on stock bios and scored a nice FireStrike results.

You can wait after may 23 as someone said and see if there is a new price performance king from Nvidia but as far as the leaks had show the GTX 770 will be just a re-branded GTX 680 and probably will cust you well over $500, and about the 2GB VRAM I have some of the most graphically demanding games installed right now (Crysis 3 and Metro Last Light) and non of them are even close of using 1GB at least not on 1080p resolution, so unless you are planing on using a 3 monitor setup (3760x1080+) you'll be fine with 2GB.

My advice to you is go for it! you'll be fine for this next generation at least , will be better if you can get them on sale and bundled with some game. thumb.gif
post #5 of 10
660 SLI, single 670 or 680 2Gb is absolutely fine with 1080p or 1200p single display. Until there is absolute proof that shows 2Gb GPU's struggles when using either 1 of these resolutions don't get caught up in the hype whistle.gif

But I will agree that since the 700 series is about to be released, you should wait...You might be able to get even a better deal with the 600 series winksmiley02.gif
Edited by drBlahMan - 5/18/13 at 7:08am
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liTTle bIG bOx
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post #6 of 10
Thread Starter 
Well I'll wait patiently it seems smarter then I'll decide..thumb.gif
what about my PSU(like I described in the first post)?
post #7 of 10
Your PSU is more than fine, my is this one 600W from 2007 I'd been wanting to replace it but 3 PC builds after and it refuses to die.
post #8 of 10
Thread Starter 
how to conect two cards that need two pci express 6 pins conections each when I have only two slots on my PSU? like in the picture:
post #9 of 10
Luck is on your side, the GTX 660 use just one PCI Express Connector. biggrin.gif

post #10 of 10
Thread Starter 
fantastic!!! I didnt know that...thanks alot thumb.gif
now I will wait for little price drop hopefully...
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