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Differences What are the advantages of each

Front view of Radeon R7 M265

Reasons to consider the
AMD Radeon R7 M265

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Higher clock speed 725 MHz vs 550 MHz More than 30% 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 28.8 GB/s More than 3x higher memory bandwidth
Higher effective memory clock speed 2,800 MHz vs 1,800 MHz More than 55% higher effective memory clock speed
Significantly wider memory bus 256 bit vs 128 bit 2x wider memory bus
More shading units 800 vs 384 416 more shading units
More render output processors 16 vs 8 Twice as many render output processors
More texture mapping units 40 vs 24 16 more texture mapping units
More compute units 10 vs 6 4 more compute units

Benchmarks Real world tests of Radeon R7 M265 vs Mobility Radeon HD 4870

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon R7 M265  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 R7 M265
6.6 GPixel/s

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

Radeon R7 M265
19.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R7 M265
633.6 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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