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Differences What are the advantages of each

Front view of Radeon HD 4890

Reasons to consider the
XFX Radeon HD 4890

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Significantly higher clock speed 1,000 MHz vs 625 MHz 60% higher clock speed
Significantly higher effective memory clock speed 4,000 MHz vs 1,986 MHz More than 2x higher effective memory clock speed
Higher memory bandwidth 128 GB/s vs 63.55 GB/s More than 2x higher memory bandwidth
Better floating-point performance 1,600 GFLOPS vs 1,000 GFLOPS 60% better floating-point performance
Slightly higher texture rate 40 GTexel/s vs 25 GTexel/s 60% higher texture rate
Front view of Radeon HD 4850

Reasons to consider the
ATi Radeon HD 4850

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Significantly better sky diver factor score 124.95 vs 2.27 More than 55x better sky diver factor score
Lower TDP 110W vs 190W More than 40% lower TDP

Benchmarks Real world tests of Radeon HD 4890 vs 4850

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 4890
Radeon HD 4850

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

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