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Differences What are the advantages of each

Front view of Radeon HD 5450

Reasons to consider the
ATi Radeon HD 5450

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Lower TDP 19W vs 80W 4.2x lower TDP
Front view of Radeon HD 4770

Reasons to consider the
ATi Radeon HD 4770

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Significantly higher effective memory clock speed 3,200 MHz vs 800 MHz 4x higher effective memory clock speed
Higher memory bandwidth 51.2 GB/s vs 6.4 GB/s 8x higher memory bandwidth
Better PassMark score 1,044 vs 231 More than 4.5x better PassMark score
Much better cloud gate factor score 12.11 vs 3.56 Around 3.5x better cloud gate factor score
Higher clock speed 750 MHz vs 650 MHz More than 15% higher clock speed
Better floating-point performance 960 GFLOPS vs 104 GFLOPS Around 9.2x better floating-point performance
More shading units 640 vs 80 560 more shading units
Significantly higher memory clock speed 800 MHz vs 400 MHz 2x higher memory clock speed
Higher pixel rate 12 GPixel/s vs 2.6 GPixel/s More than 4.5x higher pixel rate
More render output processors 16 vs 4 12 more render output processors
Higher texture rate 24 GTexel/s vs 5.2 GTexel/s More than 4.5x higher texture rate
More texture mapping units 32 vs 8 24 more texture mapping units
More compute units 8 vs 2 6 more compute units
Wider memory bus 128 bit vs 64 bit 2x wider memory bus

Benchmarks Real world tests of Radeon HD 5450 vs 4770

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Cloud Gate Factor Data courtesy FutureMark

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