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Differences What are the advantages of each

Front view of Mobility Radeon HD 560v

Reasons to consider the
ATi Mobility Radeon HD 560v

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Higher memory clock speed 800 MHz vs 700 MHz Around 15% higher memory clock speed
Front view of Mobility Radeon HD 4870

Reasons to consider the
ATi Mobility Radeon HD 4870

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Better PassMark score 702 vs 321 Around 2.2x better PassMark score
Higher memory bandwidth 89.6 GB/s vs 25.6 GB/s Around 3.5x higher memory bandwidth
Higher effective memory clock speed 2,800 MHz vs 1,600 MHz 75% higher effective memory clock speed
Slightly better floating-point performance 880 GFLOPS vs 352 GFLOPS 2.5x better floating-point performance
Significantly wider memory bus 256 bit vs 128 bit 2x wider memory bus
More shading units 800 vs 320 480 more shading units
More compute units 10 vs 4 6 more compute units
More render output processors 16 vs 8 Twice as many render output processors

Benchmarks Real world tests of Mobility Radeon HD 560v vs 4870

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Mobility Radeon HD 560v  vs 4870 

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

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