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Differences What are the advantages of each

Front view of Radeon HD 7770

Reasons to consider the
AMD Radeon HD 7770

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Much better sky diver factor score 221.64 vs 2.27 More than 97.8x better sky diver factor score
Better PassMark score 2,194 vs 1,535 Around 45% better PassMark score
Higher effective memory clock speed 4,500 MHz vs 4,000 MHz Around 15% higher effective memory clock speed
Higher memory clock speed 1,125 MHz vs 1,000 MHz Around 15% higher memory clock speed
Significantly lower TDP 80W vs 190W 2.4x lower TDP
Front view of Radeon HD 4890

Reasons to consider the
XFX Radeon HD 4890

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Higher memory bandwidth 128 GB/s vs 72 GB/s Around 80% higher memory bandwidth
Wider memory bus 256 bit vs 128 bit 2x wider memory bus

Benchmarks Real world tests of Radeon HD 7770 vs 4890

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 7770
Radeon HD 4890

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

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Showing 2 comments.
Still have two of 'em in crossfire!
The HD 4890 is still fast!
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