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Differences What are the advantages of each

Front view of Radeon HD 6650M

Reasons to consider the
AMD Radeon HD 6650M

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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 4830

Reasons to consider the
ATi Mobility Radeon HD 4830

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Higher effective memory clock speed 2,800 MHz vs 1,600 MHz 75% higher effective memory clock speed
Slightly higher memory bandwidth 44.8 GB/s vs 25.6 GB/s Around 75% higher memory bandwidth
More render output processors 16 vs 8 Twice as many render output processors

Benchmarks Real world tests of Radeon HD 6650M vs Mobility Radeon HD 4830

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the Radeon HD 6650M  vs Mobility Radeon HD 4830 

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 HD 6650M
4.8 GPixel/s

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

Radeon HD 6650M
14.4 GTexel/s
Mobility Radeon HD 4830
17.6 GTexel/s

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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