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Differences What are the advantages of each

Front view of Radeon HD 6670

Reasons to consider the
AMD Radeon HD 6670

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Significantly higher clock speed 800 MHz vs 625 MHz Around 30% higher clock speed
Much better manhattan score 1,765.57 vs -1 More than 176650% better manhattan score
Higher effective memory clock speed 4,000 MHz vs 1,986 MHz More than 2x higher effective memory clock speed
Lower TDP 66W vs 110W 40% lower TDP
Front view of Radeon HD 4850

Reasons to consider the
ATi Radeon HD 4850

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Better 3DMark06 score 14,160 vs 9,160 Around 55% better 3DMark06 score
Better cloud gate factor score 13.09 vs 10.64 Around 25% better cloud gate factor score
Better sky diver factor score 133.65 vs 89.9 Around 50% better sky diver factor score
Slightly more render output processors 16 vs 8 Twice as many render output processors
Slightly more shading units 800 vs 480 320 more shading units

Benchmarks Real world tests of Radeon HD 6670 vs 4850

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 6670
Radeon HD 4850

Manhattan (GFXBench 3.0) Data courtesy CompuBench

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

Radeon HD 6670  vs 4850 

Low PowerMedium PowerHigh PowerCore Clock500 MHz500 MHz625 MHzMemory Clock750 MHz750 MHz900 MHzGPU Voltage1.046 V1.046 V1.082 V The load detection is not dependent on 3D fullscreen, but on actual GPU usage.
Radeon HD 4850

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