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Differences What are the advantages of each

Front view of Radeon HD 8670M

Reasons to consider the
AMD Radeon HD 8670M

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Much better T-Rex score 3,046.08 vs 2,486.38 Around 25% better T-Rex score
Significantly higher clock speed 775 MHz vs 500 MHz More than 55% higher clock speed
More memory 2,048 MB vs 1,024 MB 2x more memory
Front view of Mobility Radeon HD 4850

Reasons to consider the
ATi Mobility Radeon HD 4850

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Better PassMark score 864 vs 513 Around 70% better PassMark score
Higher memory bandwidth 54.4 GB/s vs 14.4 GB/s More than 3.8x higher memory bandwidth
Much wider memory bus 256 bit vs 64 bit 4x wider memory bus
More shading units 800 vs 384 416 more shading units
Better cloud gate factor score 12.33 vs 8.08 Around 55% better cloud gate factor score
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 HD 8670M vs Mobility Radeon HD 4850

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Cloud Gate Factor Data courtesy FutureMark

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