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Differences What are the advantages of each

Front view of Radeon HD 8570D IGP

Reasons to consider the
IGP Radeon HD 8570D IGP

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Slightly more render output processors 8 vs 4 Twice as many render output processors
Slightly more texture mapping units 16 vs 8 Twice as many texture mapping units
Slightly more compute units 4 vs 2 Twice as many compute units
Front view of Radeon HD 8490

Reasons to consider the
AMD Radeon HD 8490

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Slightly higher clock speed 875 MHz vs 800 MHz Around 10% higher clock speed
Lower TDP 35W vs 65W More than 45% lower TDP

Features Key features of the Radeon HD 8570D IGP  vs 8490 

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

Radeon HD 8570D IGP
6.4 GPixel/s
Radeon HD 8490
3.5 GPixel/s

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

Radeon HD 8570D IGP
12.8 GTexel/s
Radeon HD 8490
7 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 8570D IGP
409.6 GFLOPS
Radeon HD 8490
280 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 8570D IGP  vs
8490 
GPU brand AMD AMD
GPU name Devastator Caicos XTX
Clock speed 800 MHz 875 MHz
Is dual GPU No No
Reference card None None

noise and power

TDP 65W 35W

raw performance

Radeon HD 8570D IGP  vs
8490 
Shading units 256 160
Texture mapping units 16 8
Render output processors 8 4
Compute units 4 2
Pixel rate 6.4 GPixel/s 3.5 GPixel/s
Texture rate 12.8 GTexel/s 7 GTexel/s
Floating-point performance 409.6 GFLOPS 280 GFLOPS

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