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Differences What are the advantages of each

Front view of Radeon HD 7870

Reasons to consider the
AMD Radeon HD 7870

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Significantly higher clock speed 1,000 MHz vs 823 MHz More than 20% higher clock speed
Better bitcoin mining score 316.65 mHash/s vs 71.33 mHash/s Around 4.5x better bitcoin mining score
Slightly better floating-point performance 2,560 GFLOPS vs 1,896 GFLOPS More than 35% better floating-point performance
Higher pixel rate 32 GPixel/s vs 19.8 GPixel/s More than 60% higher pixel rate
Significantly better CLBenchmark raytrace score 200,951 vs 95,174 More than 2x better CLBenchmark raytrace 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
Significantly higher battlefield 3 framerate 65 vs 38.6 Around 70% higher battlefield 3 framerate
Significantly higher FarCry 3 framerate 80 vs 60 Around 35% higher FarCry 3 framerate
Higher memory clock speed 1,400 MHz vs 1,200 MHz More than 15% higher memory clock speed
Lower TDP 130W vs 175W More than 25% lower TDP

Benchmarks Real world tests of Radeon HD 7870 vs GeForce GTX 660

Bitcoin mining Data courtesy CompuBench

Radeon HD 7870
316.65 mHash/s
GeForce GTX 660
71.33 mHash/s

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7870
3,359.57
GeForce GTX 660
3,359.77

Manhattan (GFXBench 3.0) Data courtesy CompuBench

Battlefield 3

CLBenchmark Raytrace Measures compute performance using OpenCL to do raytracing

Reviews Word on the street

Radeon HD 7870  vs GeForce GTX 660 

8.8
9.0
This isn't just a game - it's a masterpiece - a very large sandbox game that rejects the quality-quantity inverse proportionality.
GeForce GTX 660

Comments

Showing 8 comments.
Do you have evidence for this? Just asking.
If that is the case, why is it that my wife is using an ATI Radeon 850XT fine in 2014? Sorry, if you had a bad experience, that in no way means your claim is the rule or common and my wife's computer disproves your greatly over generalized claim. I think it's user error.
yeah, this site is a joke. The 7870 beat their pet nvidia card in the vast majority of benchmarks and all they can say is something about it's power consumption? I guess performance doesn't mean anything here.
All AMD GPUs are seeing an increase in price due to supply and demand. People are buying them like crazy due to bitcoin mining.
7870ghz went from $150 to $250
The only problem is the 7870 will artifact 2-3 years later when AMD adjusts the catalyst drivers to make them artifact, They do this now with the 5000 series and older, to trick you into thinking you need a new card, But if you get the 660 2-3 years later you will be fine.
Only problem is amd will adjust the catalyst drivers 2-3 years from now to make the 7000 series cards artifact like they do withh all older cards to trick you into thinking it went bad, But if you buy the 660 2-3 years later it will be perfect.
The 7870 is not only a great deal cheaper, it matches and outperforms the 660ti and has exceptional overclocking abilities. It's a no-brainer. The 7870ghz, even though sporting the Pitcairn core, is the real gem of the 7-series. Best bang for the buck out there.
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