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Differences What are the advantages of each

Front view of Radeon HD 5550

Reasons to consider the
ATi Radeon HD 5550

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Higher effective memory clock speed 3,200 MHz vs 1,986 MHz More than 60% higher effective memory clock speed
Lower TDP 39W vs 110W 2.8x lower TDP
Front view of Radeon HD 4850

Reasons to consider the
ATi Radeon HD 4850

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Significantly better 3DMark06 score 14,160 vs 6,350 Around 2.2x better 3DMark06 score
Better 3DMark vantage graphics score 7,436 vs 3,090 Around 2.5x better 3DMark vantage graphics score
Slightly higher clock speed 625 MHz vs 550 MHz Around 15% higher clock speed
Better floating-point performance 1,000 GFLOPS vs 352 GFLOPS More than 2.8x better floating-point performance
Better sky diver factor score 124.95 vs 57.53 Around 2.2x better sky diver factor score
More shading units 800 vs 320 480 more shading units
Slightly higher texture rate 25 GTexel/s vs 8.8 GTexel/s More than 2.8x higher texture rate
Wider memory bus 256 bit vs 128 bit 2x wider memory bus
More texture mapping units 40 vs 16 24 more texture mapping units
More render output processors 16 vs 8 Twice as many render output processors
More compute units 10 vs 4 6 more compute units
Higher memory clock speed 993 MHz vs 800 MHz Around 25% higher memory clock speed

Benchmarks Real world tests of Radeon HD 5550 vs 4850

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

3DMark Vantage Graphics Industry standard benchmark that tests DirectX 10 GPU performance

3DMark06 Industry standard benchmark that tests DirectX 9 GPU performance

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

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