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Sonu44589
Pilgrim
Joined: 18 Jan 2013
Posts: 3
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 Posted: Fri Jan 18, 2013 8:05 am Post subject: GeForce GTX 680 and 690 |
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I'll be getting a new PC, but a doubt came up...
I viewed tons of posts stating "GeForce GTX 690 4GB got only 2 GB VRam is usable."
My first choice was GTX 690 but after reading posts like that, I'm really confused!
Which one should I choose?
GTX 680 4GB or GTX 690 4GB.
My budget for GPU is $1100.
Please suggest! |
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Roach412
Black Belt 2nd Degree
Joined: 09 Aug 2004
Posts: 2426
Location: Milwaukee - Wisconsin
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| Posted: Fri Jan 18, 2013 10:39 am Post subject: |
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it depends.
the 690 is basically two cards slapped on one, hence your 2gb limit of vram - each one of the GPUs has 2gb available.
If you have a setup that would actually consume more than 2gb of vram at once, then obviously you should go for the larger 4gb model. i would be somewhat surprised if you did though with current titles.
it might be a futureproofing to go with the 4gb, but that's a decision on you as to whether you will upgrade again in the relative short-term. the next few models of cards will most likely run circles around either choice in a few years.
effectively you're going to need some serious display(s) in order to tax out 2gb.
http://www.tomshardware.com/forum/349910-33-discussion-enuf-vram-agree-disagree
-Roach
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Sonu44589
Pilgrim
Joined: 18 Jan 2013
Posts: 3
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| Posted: Fri Jan 18, 2013 11:56 pm Post subject: But |
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| But those posts says that even if I buy 4GB GTX 690, I'll only have 2gb usable and can't use the left 2gb vram |
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Roach412
Black Belt 2nd Degree
Joined: 09 Aug 2004
Posts: 2426
Location: Milwaukee - Wisconsin
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| Posted: Tue Jan 22, 2013 9:06 am Post subject: |
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you still use it - but it's "shared" between the two GPUs. each has access to 2gb, but in order to render correctly they must have the same data within their memories.
each GPU renders their own frames, but in order to provide the same data they must use the same data to make their calculations - hence the "shared" memory.
-Roach
_________________
Lian Li Lancool First Knight Series PC-K59W
Intel Core i7-960 Bloomfield 3.2GHz
EVGA X58 FTW3 132-GT-E768-TR
EVGA GTX 560ti FPB
G.SKILL Ripjaws Series 12GB (3 x 4GB)
Crucial M4 128gb SATAIII SSD
Corsair Professional Series HX850 PSU |
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Sonu44589
Pilgrim
Joined: 18 Jan 2013
Posts: 3
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| Posted: Tue Jan 22, 2013 11:54 pm Post subject: Anyway! |
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| Thanks |
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