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Differences What are the advantages of each

Front view of Radeon HD 5770

Reasons to consider the
ATi Radeon HD 5770

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Higher effective memory clock speed 4,800 MHz vs 4,000 MHz 20% higher effective memory clock speed
Significantly better sky diver factor score 140.24 vs 2.27 More than 61.8x better sky diver factor score
Higher memory clock speed 1,200 MHz vs 1,000 MHz 20% higher memory clock speed
Significantly lower TDP 108W vs 190W Around 45% lower TDP
Front view of Radeon HD 4890

Reasons to consider the
XFX Radeon HD 4890

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Higher clock speed 1,000 MHz vs 850 MHz Around 20% higher clock speed
Higher memory bandwidth 128 GB/s vs 76.8 GB/s More than 65% higher memory bandwidth
Wider memory bus 256 bit vs 128 bit 2x wider memory bus

Benchmarks Real world tests of Radeon HD 5770 vs 4890

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 5770
3,279.65
Radeon HD 4890
3,354.44

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

Radeon HD 5770  vs 4890 

9.0
8.7
We saw good overclocking results on our sample, which didn't break any sweat at all when overclocked.
Radeon HD 5770

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