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Differences What are the advantages of each

Front view of Radeon HD 8650D IGP

Reasons to consider the
IGP Radeon HD 8650D IGP

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Lower TDP 65W vs 130W 2x lower TDP
Front view of GeForce GTX 660

Reasons to consider the
Nvidia GeForce GTX 660

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Higher clock speed 823 MHz vs 720 MHz Around 15% higher clock speed
Better floating-point performance 1,896.2 GFLOPS vs 553 GFLOPS Around 3.5x better floating-point performance
Higher texture rate 79 GTexel/s vs 17.3 GTexel/s More than 4.5x higher texture rate
More texture mapping units 96 vs 24 72 more texture mapping units
More render output processors 32 vs 8 24 more render output processors
Higher pixel rate 19.75 GPixel/s vs 5.76 GPixel/s Around 3.5x higher pixel rate
More shading units 1,152 vs 384 Three times as many shading units

Features Key features of the Radeon HD 8650D IGP  vs GeForce GTX 660 

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

Radeon HD 8650D IGP
5.76 GPixel/s
GeForce GTX 660
19.75 GPixel/s

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

Radeon HD 8650D IGP
17.3 GTexel/s
GeForce GTX 660
79 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 8650D IGP
553 GFLOPS
GeForce GTX 660
1,896.2 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

render output processors GPU commponents responsible for transform pixels as they flow between memory buffers

Specifications Full list of technical specs

gpu

Radeon HD 8650D IGP  vs
GeForce GTX 660 
GPU brand AMD Nvidia
GPU name Scrapper GK104
Clock speed 720 MHz 823 MHz
Turbo clock speed 844 MHz 888 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GTX 660 980 MHz 2 GB

noise and power

TDP 65W 130W

raw performance

Radeon HD 8650D IGP  vs
GeForce GTX 660 
Shading units 384 1,152
Texture mapping units 24 96
Render output processors 8 32
Pixel rate 5.76 GPixel/s 19.75 GPixel/s
Texture rate 17.3 GTexel/s 79 GTexel/s
Floating-point performance 553 GFLOPS 1,896.2 GFLOPS

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