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Differences What are the advantages of each

Front view of Radeon R7 M440

Reasons to consider the
AMD Radeon R7 M440

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Significantly higher clock speed 1,021 MHz vs 660 MHz Around 55% higher clock speed
Significantly more memory 4,096 MB vs 512 MB 8x more memory
Slightly better PassMark score 932 vs 728 Around 30% better PassMark score
Higher memory clock speed 1,000 MHz vs 850 MHz Around 20% higher memory clock speed
Front view of Mobility Radeon HD 3870

Reasons to consider the
ATi Mobility Radeon HD 3870

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Higher memory bandwidth 54.4 GB/s vs 16 GB/s Around 3.5x higher memory bandwidth
Much wider memory bus 256 bit vs 64 bit 4x wider memory bus
More render output processors 16 vs 8 Twice as many render output processors

Benchmarks Real world tests of Radeon R7 M440 vs Mobility Radeon HD 3870

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon R7 M440  vs Mobility Radeon HD 3870 

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 R7 M440
8.17 GPixel/s
Mobility Radeon HD 3870
10.56 GPixel/s

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

Radeon R7 M440
20.42 GTexel/s
Mobility Radeon HD 3870
10.56 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R7 M440
653.4 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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