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Differences What are the advantages of each

Front view of Radeon HD 7650A

Reasons to consider the
AMD Radeon HD 7650A

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Higher clock speed 600 MHz vs 500 MHz 20% higher clock speed
More shading units 480 vs 96 384 more shading units
Higher memory clock speed 900 MHz vs 800 MHz Around 15% higher memory clock speed
Front view of GeForce GTS 250M

Reasons to consider the
Nvidia GeForce GTS 250M

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Much better T-Rex score 3,354.5 vs 1,342.64 Around 2.5x better T-Rex score
Higher effective memory clock speed 3,200 MHz vs 1,800 MHz Around 80% higher effective memory clock speed
Higher memory bandwidth 51.2 GB/s vs 28.8 GB/s Around 80% higher memory bandwidth

Benchmarks Real world tests of Radeon HD 7650A vs GeForce GTS 250M

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Features Key features of the Radeon HD 7650A  vs GeForce GTS 250M 

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

Radeon HD 7650A
28.8 GB/s
GeForce GTS 250M
51.2 GB/s

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

Radeon HD 7650A
4.8 GPixel/s
GeForce GTS 250M
4 GPixel/s

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

Radeon HD 7650A
14.4 GTexel/s
GeForce GTS 250M
16 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7650A
576 GFLOPS
GeForce GTS 250M
240 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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