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Differences What are the advantages of each

Front view of Radeon HD 7660G IGP

Reasons to consider the
AMD Radeon HD 7660G IGP

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Significantly lower TDP 35W vs 140W 4x lower TDP
Front view of Radeon HD 3850 X2

Reasons to consider the
ATi Radeon HD 3850 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
More render output processors 32 vs 8 24 more render output processors
Higher pixel rate 21.4 GPixel/s vs 5.49 GPixel/s Around 4x higher pixel rate

Features Key features of the Radeon HD 7660G IGP  vs 3850 X2 

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

Radeon HD 7660G IGP
5.49 GPixel/s
Radeon HD 3850 X2
21.4 GPixel/s

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

Radeon HD 7660G IGP
16.5 GTexel/s
Radeon HD 3850 X2
21.4 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 7660G IGP
526.8 GFLOPS
Radeon HD 3850 X2
856.4 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

compute units Discrete cores within the GPU

Specifications Full list of technical specs

gpu

Radeon HD 7660G IGP  vs
3850 X2 
GPU brand AMD ATI
GPU name Devastator RV670
Clock speed 686 MHz 669 MHz
Is dual GPU No Yes
Reference card None None

noise and power

TDP 35W 140W

raw performance

Radeon HD 7660G IGP  vs
3850 X2 
Shading units 384 640
Texture mapping units 24 32
Render output processors 8 32
Compute units 6 8
Pixel rate 5.49 GPixel/s 21.4 GPixel/s
Texture rate 16.5 GTexel/s 21.4 GTexel/s
Floating-point performance 526.8 GFLOPS 856.4 GFLOPS

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