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Differences What are the advantages of each

Front view of Mobility Radeon HD 4830

Reasons to consider the
ATi Mobility Radeon HD 4830

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More shading units 640 vs 192 448 more shading units
Slightly higher memory clock speed 700 MHz vs 625 MHz More than 10% higher memory clock speed
Front view of GeForce GTX 560M

Reasons to consider the
Nvidia GeForce GTX 560M

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Significantly better PassMark score 1,554 vs 514 More than 3x better PassMark score
Higher clock speed 775 MHz vs 550 MHz More than 40% higher clock speed
More render output processors 24 vs 16 8 more render output processors
Wider memory bus 192 bit vs 128 bit 50% wider memory bus

Benchmarks Real world tests of Mobility Radeon HD 4830 vs GeForce GTX 560M

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Mobility Radeon HD 4830  vs GeForce GTX 560M 

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

GeForce GTX 560M
6.2 GPixel/s

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

Mobility Radeon HD 4830
17.6 GTexel/s
GeForce GTX 560M
24.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 560M
595.2 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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