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HD7850 good upgrade from CFX HD6870? or go for the HD7950? (other suggestions also allowed) - Page 2

post #11 of 34
Like i said, it will beat any 7970 when overclocked (untill you oc the 7970) plus AMD overclocks much better than nVidea giving you something to do when bored
     
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post #12 of 34
well thats for me sure, he is runnign 1920x1080 monitor

but I honestly cant say, 192-bit just sounds so out dated. even with GDDR5
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post #13 of 34
True, the 7950 is the way forward M8, 192 is slow for high end cards but look at the HD7770, its doing fine with under that
     
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post #14 of 34
Quote:
Originally Posted by galaxy366 View Post

I am interested now in the 7950 smile.gif

How does the 7950 compare too two HD6870 that I have now? Does a single card beat my two cards?

It will beat it after a mild OC, A stock 7950 is about 1.8x of a 6870 so already you can match a crossfire set up

http://www.anandtech.com/bench/Product/540?vs=550
post #15 of 34
Not to mention the 7950 will overclock ALOT, it will easily overclock past the GTX670 and HD7970
     
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post #16 of 34
Quote:
Originally Posted by galaxy366 View Post

I am interested now in the 7950 smile.gif

How does the 7950 compare too two HD6870 that I have now? Does a single card beat my two cards?


http://www.alternate.nl/html/product/SAPPHIRE/Radeon_HD_7950_with_Boost_%2811196-16-20G%29/1036176/

Get the Sapphire HD 7950 boost . 925 mhz boost clocks. comes with a stock voltage of 1.2 - 1.25v. overclocks easily to 1100 - 1150 mhz. clock HD 7950 is 3 - 6% slower than HD 7970. HD 7950 at 1100 - 1150 mhz matches HD 7970 Ghz (1050 mhz). HD 7950 boost even at stock is faster than HD 6870 CF. CF scaling in best cases is 1.8x . There are many games where CF scales poorly and some in which CF is broken (non-existent or negative scaling). On average across many games its closer to 1.5x - 1.6x.

http://www.techpowerup.com/reviews/ATI/Radeon_HD_6870_CrossFire/23.html

1920 x 1200

HD 6870 - 66
HD 6870 CF - 100

http://www.techpowerup.com/reviews/HIS/HD_7950_X2_Boost/28.html

HD 6870 - 55
HIS HD 7950 iceq x2 boost - 100
GTX 670 - 101
HD 7970 Ghz - 115

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

BF3 1920 x 1200 4x AA

HIS HD 7950 iceq x2 boost - 67.5
HD 7970 Ghz - 78.9
HIS HD 7950 iceq x2 boost (1210) - 82.9
Edited by raghu78 - 1/25/13 at 11:57am
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post #17 of 34
Quote:
Originally Posted by galaxy366 View Post

I am interested now in the 7950 smile.gif

How does the 7950 compare too two HD6870 that I have now? Does a single card beat my two cards?

It's not a clear win, 6870 CF vs 7950. 7950 can overclock better and surpass your current cards and you won't have to struggle with crossfire issues. You won't need to wait for CAPS for best performance in new games.




You have to take into account that 6800 series are monsters for scaling in Crossfire. We might not find a comparison for 8xAA but I'm sure a stock 7950 will be faster than your cards at 8xAA.
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post #18 of 34
Not to mention when overclocked wink.gif
     
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post #19 of 34
I would say go for the 660ti, having come from a 7970 (that I killed) that could reach 1300 core and 1700 mem. at 1080p you won't be running 8xmsaa but you can definitely get some decent fxaa and run at 60 fps.

192 bit doesn't seem to be an issue yet, which it might be in a couple years, but buying a gpu under the premise of "future proofing" is a silly notion. As by the time it is being pushed to its limits you might be a generation or two behind.

As far as SLI / CF its not worth the headaches and extra power requirements unless you are using top end cards to push huge resolution or 120 fps..

to answer the question in the title: No, a 7850 is not a good upgrade from a 6870. And with the AMD 8000 series coming soon and the 700 series as well with your card I would hold off for a few more months.
Edited by Rickles - 1/25/13 at 12:03pm
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post #20 of 34
The true win is the quality over more fps. Crossfire usually has micro-stutters and needs regular updates to CAPS. 6870 crossfire can overclock too. However, around 8xAA and being a single card, 7950 will be hassle-free and allow more fluid gameplay.

PS: If you are after better performance, 8000 series are not that far to release. Here, I found a similar thread http://www.overclock.net/t/1214434/crossfire-6870s-or-7970/0_20 Basically, it's what we said, 1 card vs 2 card issues, less power, more VRAM(for AA). There's a person who has both, 6850 crossfire heavily overclocked and 7970 overclocked. He says 6850 crossfire is faster in games. As the thread is old, his 7970 probably pulls ahead because of 12.11 cataylst driver boost.
Edited by Catscratch - 1/25/13 at 12:12pm
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Overclock.net › Forums › Graphics Cards › AMD/ATI › HD7850 good upgrade from CFX HD6870? or go for the HD7950? (other suggestions also allowed)