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Crossfire-6970 1GB vs one 7950 3 GB gaming build

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So, im trying to decide on a graphic card for my new build, and I cant decide between two Radeon HD 6870 1GB cards, or one 7950 3GB cards, now im new to Graphic cards, so I dont know much, but I do know the basics, I wil be over clocking ( I know how to do that :)  ). Im going to be playing very graphic demanding games like Crisis and Battlefield 3, Im alos gona be doing a lot of video editing and recording, and playing a lot of minecraft with very high res texture packs and shader mods ( lol Im making a very non-graphic demanding game into a very graphic demanding one xD ) And I want a good frame rate, especially when Im recording. Thanks in advanced an I will post the cards and my build below.

CARDS-

two of these crossfire- http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Or one of these - http://www.newegg.com/Product/Product.aspx?Item=N82E168...

NOTE: Ive had good experiences with XFX and I know some people havent, But Im still sticking with them.

My build ( sorry I dont have time to hunt down every link )

CPU- i5 2500K OC'd as high as my cooling will let me.
MOBO- BIOSTAR BOARD link ---> http://www.newegg.com/Product/Product.aspx?Item=N82E168...
some random 900watt PSU my friend recommended, I think its coolmax ( NOTE: I may get a 850 watt instead, IDK if it matters, because there both powerful :p  )
1TB HDD ( probably doesn't matter for this)
G.SKILL 8GB RAM
and a large case to fit all this
along with some other small things like a good air cooler, and a CD/DVD drive


again, thank you for reading, and if you have any advice, please tell me, im always open for improvement

More about : crossfire 6970 1gb 7950 gaming build

a b U Graphics card

What games do you play? I currently have two 6870's in X-fire (1GB cards). If you plan on playing BF3 get the 670, with only 1GB cards you won't be able to run on ultra settings.

Actually you should just get the 670 anyway..... and crossfire down the road later
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a b U Graphics card

Out of your original two options the 2x 6870's or 1 7950, definitely go with the 1 7950. While the two 6870's will give you slightly more "raw" power, over the long term they will be held back by the lack of vram vs the 7950. I run a 7950 and have already seen some games go past using 2 gigs of ram so having 3 gigs will definitely help in the long run.

AdioKIP said:
Out of your original two options the 2x 6870's or 1 7950, definitely go with the 1 7950. While the two 6870's will give you slightly more "raw" power, over the long term they will be held back by the lack of vram vs the 7950. I run a 7950 and have already seen some games go past using 2 gigs of ram so having 3 gigs will definitely help in the long run.



Thanks for the awnser, Ill go with the 7950, also, for everyone saying " GTX 670" Its out of my price range, I only wanted to spend around 350$ for the card, the GTX is 410, but thanks anyway.
a b U Graphics card

You should easily be able to overclock the 7950 to beat a stock 7970 or GTX 670. When I need extra power I simply load a profile with my clocks at 1100/1500 but most games I play dont need the extra power yet so I normally leave it stock.
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