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Differences What are the advantages of each

Front view of Radeon HD 6650A

Reasons to consider the
AMD Radeon HD 6650A

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Slightly lower TDP 45W vs 60W 25% lower TDP
Front view of GeForce GTX 750 Ti

Reasons to consider the
Nvidia GeForce GTX 750 Ti

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Significantly higher clock speed 1,020 MHz vs 600 MHz 70% higher clock speed
Significantly higher effective memory clock speed 5,400 MHz vs 1,800 MHz 3x higher effective memory clock speed
Higher memory bandwidth 86.4 GB/s vs 28.8 GB/s More than 3x higher memory bandwidth
Higher texture rate 82.64 GTexel/s vs 14.4 GTexel/s Around 5.8x higher texture rate
Better floating-point performance 1,728 GFLOPS vs 576 GFLOPS 3x better floating-point performance
Slightly more memory 2,048 MB vs 1,024 MB 2x more memory
Significantly higher memory clock speed 1,502 MHz vs 900 MHz More than 65% higher memory clock speed
Higher pixel rate 16.32 GPixel/s vs 4.8 GPixel/s Around 3.5x higher pixel rate
Better PassMark direct compute score 1,830 vs 378 More than 4.8x better PassMark direct compute score
More render output processors 16 vs 8 Twice as many render output processors

Benchmarks Real world tests of Radeon HD 6650A vs GeForce GTX 750 Ti

PassMark Direct Compute Measures performance of general-purpose computing using Microsoft DirectCompute

Features Key features of the Radeon HD 6650A  vs GeForce GTX 750 Ti 

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

Radeon HD 6650A
28.8 GB/s
GeForce GTX 750 Ti
86.4 GB/s

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

Radeon HD 6650A
4.8 GPixel/s
GeForce GTX 750 Ti
16.32 GPixel/s

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

Radeon HD 6650A
14.4 GTexel/s
GeForce GTX 750 Ti
82.64 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6650A
576 GFLOPS
GeForce GTX 750 Ti
1,728 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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