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Differences What are the advantages of each

Front view of Radeon HD 4670

Reasons to consider the
ATi Radeon HD 4670

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Slightly higher clock speed 750 MHz vs 680 MHz More than 10% higher clock speed
More texture mapping units 32 vs 8 24 more texture mapping units
Front view of Mobility Radeon HD 3670

Reasons to consider the
ATi Mobility Radeon HD 3670

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Lower TDP 30W vs 59W Around 50% lower TDP

Benchmarks Real world tests of Radeon HD 4670 vs Mobility Radeon HD 3670

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon HD 4670  vs Mobility Radeon HD 3670 

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

Radeon HD 4670
6 GPixel/s
Mobility Radeon HD 3670
2.72 GPixel/s

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

Radeon HD 4670
24 GTexel/s
Mobility Radeon HD 3670
5.44 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4670
480 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

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