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Differences What are the advantages of each

Front view of Mobility Radeon HD 5670 Mac

Reasons to consider the
ATi Mobility Radeon HD 5670 Mac

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Lower TDP 15W vs 35W 2.3x lower TDP
Front view of Mobility Radeon HD 4670 Mac

Reasons to consider the
ATi Mobility Radeon HD 4670 Mac

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Slightly more texture mapping units 32 vs 20 12 more texture mapping units

Features Key features of the Mobility Radeon HD 5670 Mac  vs 4670 Mac 

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

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

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

floating point performance How fast the gpu can crunch numbers

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

Specifications Full list of technical specs

gpu

Mobility Radeon HD 5670 Mac  vs
4670 Mac 
GPU brand ATI ATI
GPU name Madison M96
Market Laptop Laptop
Clock speed 650 MHz 680 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 400 320
Texture mapping units 20 32
Render output processors 8 8
Compute units 5 4
Pixel rate 5.2 GPixel/s 5.44 GPixel/s
Texture rate 13 GTexel/s 21.76 GTexel/s
Floating-point performance 520 GFLOPS 435.2 GFLOPS

memory

Mobility Radeon HD 5670 Mac  vs
4670 Mac 
Memory clock speed 795 MHz 790 MHz
Effective memory clock speed 1,590 MHz 1,580 MHz
Memory bus 128 bit 128 bit
Memory 512 MB 256 MB
Memory type GDDR3 GDDR3
Memory bandwidth 25.44 GB/s 25.28 GB/s

noise and power

TDP 15W 35W

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