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7850's crossfire or get a single 7950/670 bad idea? or wait for HD 9000?

post #1 of 15
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Is this a bad idea with sig rig?
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Ice
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post #2 of 15
Hello, maybe you want to check this article.
It shows the difference between 16/4 and 8/8 on a 6950 crossfire config.
post #3 of 15

If they are gen 3.0 PCI-E slots, there will be maybe 1-2fps loss from the x4 slot.

 

If you are talking PCI-E Gen 2.0 slots, I wouldn't do it myself, but some would.

 

Those are Gen 2.0 slots, so I wouldn't bother. Too much performance loss for my taste.


Edited by TehOnlyMITTENS - 9/2/13 at 2:46pm
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post #4 of 15
I wouldn't do it either. Get a new board or sell your 7850 and get a 7950 or 7970 instead.
post #5 of 15
OP HD 7950 is 50% faster than HD 7850 at same clocks. CF scaling in best cases is 1.8x but on average is closer to 1.6x. single HD 7950 provides more consistent frametimes and smoother gameplay performance. draws lesser power. runs cooler and quieter.

you are better off selling the HD 7850 and getting a HD 7950. the prices are a steal.

www.overclockers.co.uk/showproduct.php?prodid=GX-190-MS

http://www.aria.co.uk/SuperSpecials/Other+products/PowerColor+PCS%2B+Radeon+HD+7950+3GB+GDDR5+Graphics+Card+%5BAX7950+3GBD5-2DHPP%5D+%2B+3+FREE+GAMES!+?productId=56898&source=skinflint
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post #6 of 15
Thread Starter 
i would like to get a 7950, but with the Sea islands cards being announce next month, i would like to see what comes to the table even though it may push the prices down
Quote:
Originally Posted by raghu78 View Post

OP HD 7950 is 50% faster than HD 7850 at same clocks. CF scaling in best cases is 1.8x but on average is closer to 1.6x. single HD 7950 provides more consistent frametimes and smoother gameplay performance. draws lesser power. runs cooler and quieter.

you are better off selling the HD 7850 and getting a HD 7950. the prices are a steal.

www.overclockers.co.uk/showproduct.php?prodid=GX-190-MS

http://www.aria.co.uk/SuperSpecials/Other+products/PowerColor+PCS%2B+Radeon+HD+7950+3GB+GDDR5+Graphics+Card+%5BAX7950+3GBD5-2DHPP%5D+%2B+3+FREE+GAMES!+?productId=56898&source=skinflint

i can get a Msi GTX 670 Pe for cheaper with two games http://www.scan.co.uk/products/2gb-msi-gtx670-pe-power-edition-915mhz-core-boost-980mhz-gddr5-6008mhz-memory

i know the 7950 is more future proof ( 3GB vram vs 2GB) but surely the 7950 isnt powerfull enugh to utilise that much vram.
Edited by DizzlePro - 9/3/13 at 9:31am
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Ice
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post #7 of 15
Quote:
Originally Posted by DizzlePro View Post

i would like to get a 7950, but with the Sea islands cards being announce next month, i would like to see what comes to the table even though it may push the prices down

OP you mean Volcanic Islands. its worth waiting only if you have a budget around 400 pounds. Hawaii is going to be at a higher price range of 400 - 500 pounds.
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post #8 of 15
Quote:
Originally Posted by raghu78 View Post


OP you mean Volcanic Islands. its worth waiting only if you have a budget around 400 pounds. Hawaii is going to be at a higher price range of 400 - 500 pounds.

Sorry for my ignorance, but I'm assuming you guys are talking about British pounds? tongue.gif

The 7970 dropped to $280 a few days ago, which is 180 pounds if you can find one equally priced. I'd say jump on that if you have the money at your expense.

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Triennial
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post #9 of 15
Thread Starter 
i want to get a new GPU, my choices

1. Grab another 7850 for £150 and go crossfire (bad price but i want a matching card
2. Sell current 7850 & get a Sapphire 7950 3GB
3. Sell current 7850 & get a Msi Gtx 670 2GB PE
4. Wait until Amd announce 9000 just in case prices drop (im impatient)

and at the same clocks which has better avg performance, GTx 670 or 7950
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post #10 of 15
Single is always better imo. I'm going to return my 2nd 7970 i tried for Crossfire - didnt like it that much, even with the frame pacing. Going to upgrade to single 9970 or 780/Titan depending on price/performance.
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