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Differences What are the advantages of each

Front view of Mobility Radeon HD 4670 Mac

Reasons to consider the
ATi Mobility Radeon HD 4670 Mac

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Higher clock speed 680 MHz vs 580 MHz More than 15% higher clock speed
More texture mapping units 32 vs 8 24 more texture mapping units
Slightly more shading units 320 vs 16 304 more shading units
Front view of GeForce 9400M

Reasons to consider the
Nvidia GeForce 9400M

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Slightly lower TDP 12W vs 35W 2.9x lower TDP

Features Key features of the Mobility Radeon HD 4670 Mac  vs GeForce 9400M 

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

GeForce 9400M
2.32 GPixel/s

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

GeForce 9400M
4.64 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce 9400M
44.8 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

Mobility Radeon HD 4670 Mac  vs
GeForce 9400M 
GPU brand ATI Nvidia
GPU name M96 C79MX
Clock speed 680 MHz 580 MHz
Is dual GPU No No
Reference card None None

noise and power

TDP 35W 12W

raw performance

Mobility Radeon HD 4670 Mac  vs
GeForce 9400M 
Shading units 320 16
Texture mapping units 32 8
Render output processors 8 4
Pixel rate 5.44 GPixel/s 2.32 GPixel/s
Texture rate 21.76 GTexel/s 4.64 GTexel/s
Floating-point performance 435.2 GFLOPS 44.8 GFLOPS

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