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Differences What are the advantages of each

Front view of Radeon R5 M335

Reasons to consider the
AMD Radeon R5 M335

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Much higher clock speed 1,070 MHz vs 550 MHz Around 95% higher clock speed
More memory 2,048 MB vs 1,024 MB 2x more memory
Higher memory clock speed 900 MHz vs 700 MHz Around 30% higher memory clock speed
Front view of Mobility Radeon HD 4870

Reasons to consider the
ATi Mobility Radeon HD 4870

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Higher memory bandwidth 89.6 GB/s vs 14.4 GB/s Around 6.2x higher memory bandwidth
Higher effective memory clock speed 2,800 MHz vs 1,800 MHz More than 55% higher effective memory clock speed
Much wider memory bus 256 bit vs 64 bit 4x wider memory bus
More shading units 800 vs 320 480 more shading units
More texture mapping units 40 vs 20 Twice as many texture mapping units
More render output processors 16 vs 8 Twice as many render output processors
More compute units 10 vs 5 Twice as many compute units

Benchmarks Real world tests of Radeon R5 M335 vs Mobility Radeon HD 4870

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon R5 M335  vs Mobility Radeon HD 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

Radeon R5 M335
8.56 GPixel/s

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

Radeon R5 M335
21.4 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R5 M335
684.8 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

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