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New computer: Used gtx 670 sli or gtx 770 or 780

Last response: in Graphics & Displays
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May 1, 2014 1:50:59 AM

I am in the process of building a new computer (my old one is 10 years old with a 744 socket mobo, lol). So far I have the case (Corsair 650D) and psu (Corsair RM850).

I have the option to buy two used gtx 670s for SLI for $440 or would you buy a 770 or 780 for around $100 more even though the performance is worse?
Also, do 4gb cards overclock better than 2gb ones?

Thanks for any opinions, I've been researching graphics card for the about 5 hours a day over the last three days and it's driving me crazy!

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Added info based on replies:

Thanks guys for the speedy replies. :) 

I'll need to get a new monitor so probably won't play above 1440p. Would 670sli be overkill? I am thinking that a 780 would do for a while then I can sli them in the future. I have Tomb Raider on the PS3 but will probably buy Batman Origins for the the new PC. And Splinter Cell. Games like that.

The Gigabyte rev2 is $10 more than the Asus, any pros/cons for either brand?

I haven't researched CPUs and mobos yet, that's next week! But probably a clockable i7 to future proof my build.

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May 1, 2014 1:54:59 AM

For $59 more plus the cost of the used GTX 670, i would definitely get the GTX 780
http://pcpartpicker.com/part/asus-video-card-gtx780dc2o...

Using dual GPU setup will generate more heat, draw more power and you will experience some microstuttering in different games or they will not work at all.
Using one GPU is more elegant,cooler and power friendly option.
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May 1, 2014 2:08:48 AM

I got dual 670. It'll beat a 780 and match it with 780ti and 690
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May 1, 2014 2:12:11 AM

Get a NEW card! A pair of GTX670's sounds tempting but with a new card you get a warranty and TBH, SLI can be a pain in the@ss and some games out there just don't play nice with SLI right now. Besides, we don't even know what CPU you will be using, the video card just may overpower it, depending on what you get.
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May 1, 2014 2:18:15 AM

I'll need to get a new monitor so probably won't play above 1440p. Would 670sli be overkill? I am thinking that a 780 would do for a while then I can sli them in the future. I have Tomb Raider on the PS3 but will probably buy Batman Origins for the the new PC. And Splinter Cell. Games like that.

The Gigabyte rev2 is $10 more than the Asus, any pros/cons for either brand?

I haven't researched CPUs and mobos yet, that's next week! But probably a clockable i7 to future proof my build.
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