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Differences What are the advantages of each

Front view of Radeon HD 7850

Reasons to consider the
AMD Radeon HD 7850

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Slightly higher clock speed 860 MHz vs 823 MHz Around 5% higher clock speed
Significantly better CLBenchmark raytrace score 190,967 vs 95,174 More than 2x better CLBenchmark raytrace score
Slightly higher pixel rate 27.5 GPixel/s vs 19.8 GPixel/s Around 40% higher pixel rate
Better video composition score 71.34 frames/s vs 54 frames/s More than 30% better video composition score
Front view of GeForce GTX 660

Reasons to consider the
Nvidia GeForce GTX 660

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Higher effective memory clock speed 5,600 MHz vs 4,800 MHz More than 15% higher effective memory clock speed
Higher memory bandwidth 179.2 GB/s vs 153.6 GB/s More than 15% higher memory bandwidth
Higher texture rate 79 GTexel/s vs 55 GTexel/s Around 45% higher texture rate
More texture mapping units 96 vs 64 32 more texture mapping units
Higher battlefield 3 framerate 65 vs 55 Around 20% higher battlefield 3 framerate
Higher memory clock speed 1,400 MHz vs 1,200 MHz More than 15% higher memory clock speed

Benchmarks Real world tests of Radeon HD 7850 vs GeForce GTX 660

Bitcoin mining Data courtesy CompuBench

Radeon HD 7850
218.41 mHash/s
GeForce GTX 660
71.33 mHash/s

Face detection Data courtesy CompuBench

Radeon HD 7850
45.09 mPixels/s
GeForce GTX 660
27.06 mPixels/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7850
3,359.35
GeForce GTX 660
3,359.77

Manhattan (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7850
3,717.53
GeForce GTX 660
3,718.88

Battlefield 3

CLBenchmark Raytrace Measures compute performance using OpenCL to do raytracing

Reviews Word on the street

Radeon HD 7850  vs GeForce GTX 660 

9.1
9.0
This power configuration is good for up to 225 W of power draw for the former and 150 W for the latter.
Radeon HD 7850

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Comments

Showing 10 comments.
I own both... on my I7 system, i am running the 660 Superclocked signature 2 & on my ALL AMD system, FX6350, I'm running 7850 crossfired (1 MSI twin frozr & 1 Asus CU) I picked up the 7850s for $50 & $60 =$110 total, (that was in May) I picked up the Nvidia for $70 (so of these clowns on ebay... price their used GPU's like they are only 1 month off market! you have to edumacate these idiots.... But i have to say... i'm impressed with both setups...(the twin 7850s rock my single 660) but obvious 2 660s would rock the 7850 (basically r9270s) My older system had 560TI with OC'd E8400 (ran pretty well, I was able to pick up a second 560TI for $40) so i SLI'd it....(it would run certain games better, but obviously my limitations were with the processor (bottlenecking) so i swapped it out for my Q6600, (it ran smoother, but for whatever reason my ASUS P5ND couldn't OC that chip, so i tried a Q8200 i had around... same issue) but i gave that system to my nephew... not bad system... Q6600 (stock) 8 gigs ddr 800 ram, 2 560TI SLI'd...
same i got for $90
I got my 7850 off ebay for $80
not really nvidia isnt alway good... they make my games crash a lot so im buying a 7850 now yay
theyre both good so no one wins
when you talk about gaming, nVIDIA is the best, no doubt!
But it really does not matter because the 660 overclocked will again pass it up. The price of the 660 is also better than the price of the 7850, So you would be dumb to by the 7850 unless you could get it for $150. But really the 7850 is not to much faster than the 650 Ti, I am going to replace my 650 Ti with a 660. Great prices on them now
HD 7850 is better for gaming.
and GTX 660 has dropped its price to 180 USD...
660 wins stock 7850 wins when OC'd
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