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opinions on choosing gpu for crossfire

post #1 of 5
Thread Starter 
hello guys!

i would like to share my thoughts with you and see your opinions on which of two gpus should i choose for the crossfire i am willing to do on my gaming rig...

1st. HD7870-DC2TG-2GD5-V2
http://www.asus.com/Graphics_Cards/HD7870DC2TG2GD5V2/



2nd.GV-R787OC-2GD
http://www.gigabyte.us/products/product-page.aspx?pid=4154#ov


my main concern is the temps and the noise as i already know that this crossfire is future proof for my rig...

thanx for your time!!!
Edited by sobi1984 - 2/2/13 at 2:58pm
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post #2 of 5
I think the blue PCB on the GigaByte card is pretty ugly, but other than that I have no comment.
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post #3 of 5
Thread Starter 
Quote:
Originally Posted by alcal View Post

I think the blue PCB on the GigaByte card is pretty ugly, but other than that I have no comment.
me too.. the same i believe about the blue pcb...
of course the third fan makes me wondering about how quiet are those gpus on idle
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post #4 of 5
Ive had the blue pcb gigabyte gtx 460 cards with that same cooler in sli. Terrible fans made of super brittle plastic, abnormally hot vrms and poor overclockers. Wasnt impressed with the quality.
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post #5 of 5
Don't go for HD 7870 CF. go for a faster single GPU like HD 7950 boost or HD 7970 Ghz. single GPU always provides the best experience. multi GPU can get troublesome with poor cf scaling in few games and issues like microstuttering. remember that overclocking in CF is more difficult than single GPU. you could easily get a HD 7950 / HD 7970 to 1.2 Ghz with a bit of voltage tweaking. if you get a golden sample you can go upto 1.3 ghz. with HD 7870 CF your chances of going past 1.15 ghz are lesser mainly due to heat problems in CF. the open design on these custom coolers is not well suited for extreme overclocks in CF.

HD 7950 boost
http://www.pixmania.gr/gr/gr/19339207/art/his/radeon-hd-7950-iceq-x2-boost-clock---3-g%CE%92-gddr5---pci-express-3.0-%28h795qmc3g2m%29.html
http://www.pixmania.gr/gr/gr/18031995/art/sapphire-technology/radeon-hd-7950-vapor-x--3-g%CE%92-gddr5---pci-express-3.0-%2811196-09-40g%29.html

HD 7970 Ghz
http://www.pixmania.gr/gr/gr/17289623/art/sapphire-technology/radeon-hd-7970-vapor-x-ghz-edition---3-g%CE%92-gddr5---pci-express-3.0-%2811197-12-40g%29.html

HD 7950 boost is on avg 25% faster than HD 7870. at the same clocks its 30 - 35% faster. clock for clock HD 7970 is 3 - 7% faster than HD 7950. HD 7950 at 1100 - 1150 mhz matches HD 7970 GHZ (1050 Mhz). think and decide.

http://www.techpowerup.com/reviews/HIS/HD_7950_X2_Boost/31.html

HD 7870 - 53.8
HD 7950 iceq x2 boost - 67.5
HD 7970 Ghz - 78.9
HD 7950 iceq x2 boost (1210 mhz) - 82.9
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