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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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Much lower TDP 19W vs 165W 8.7x lower TDP
Front view of Radeon HD 3870 X2

Reasons to consider the
ATi Radeon HD 3870 X2

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Much higher memory bandwidth 115.32 GB/s vs 6.4 GB/s More than 18x higher memory bandwidth
Higher clock speed 825 MHz vs 650 MHz More than 25% higher clock speed
Higher effective memory clock speed 1,802 MHz vs 800 MHz More than 2.2x higher effective memory clock speed
Much better cloud gate factor score 10.96 vs 3.56 More than 3x better cloud gate factor score
Much wider memory bus 512 bit vs 64 bit 8x wider memory bus
Higher pixel rate 26.4 GPixel/s vs 2.6 GPixel/s Around 10.2x higher pixel rate
Slightly better PassMark score 872 vs 231 More than 3.8x better PassMark score
Significantly more render output processors 32 vs 4 28 more render output processors
Better floating-point performance 1,056 GFLOPS vs 104 GFLOPS Around 10.2x better floating-point performance
Significantly higher memory clock speed 901 MHz vs 400 MHz More than 2.2x higher memory clock speed
More shading units 640 vs 80 560 more shading units
Higher texture rate 26.4 GTexel/s vs 5.2 GTexel/s More than 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

Benchmarks Real world tests of Radeon HD 5450 vs 3870 X2

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 5450

Cloud Gate Factor Data courtesy FutureMark

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