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Differences What are the advantages of each

Front view of Radeon HD 8670

Reasons to consider the
AMD Radeon HD 8670

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Much higher clock speed 1,000 MHz vs 518 MHz Around 95% higher clock speed
Significantly higher effective memory clock speed 4,600 MHz vs 2,016 MHz More than 2.2x higher effective memory clock speed
Higher memory clock speed 1,150 MHz vs 1,008 MHz Around 15% higher memory clock speed
Significantly lower TDP 75W vs 182W 2.4x lower TDP
Front view of GeForce GTX 260

Reasons to consider the
Nvidia GeForce GTX 260

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Higher memory bandwidth 112.9 GB/s vs 73.6 GB/s Around 55% higher memory bandwidth
More render output processors 28 vs 8 20 more render output processors
More texture mapping units 64 vs 24 40 more texture mapping units
Wider memory bus 448 bit vs 128 bit 3.5x wider memory bus

Benchmarks Real world tests of Radeon HD 8670 vs GeForce GTX 260

Cloud Gate Factor Data courtesy FutureMark

Features Key features of the Radeon HD 8670  vs GeForce GTX 260 

memory bandwidth Rate at which data can be read from or stored in onboard memory

Radeon HD 8670
73.6 GB/s
GeForce GTX 260
112.9 GB/s

pixel rate Number of pixels a graphics card can render to the screen every second

Radeon HD 8670
8.4 GPixel/s
GeForce GTX 260
14.5 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

Radeon HD 8670
25.2 GTexel/s
GeForce GTX 260
33.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 8670
806.4 GFLOPS
GeForce GTX 260
414.7 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

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