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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 48W 2.5x lower TDP
Front view of Radeon HD 4650

Reasons to consider the
BIOSTAR Radeon HD 4650

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Higher effective memory clock speed 1,400 MHz vs 800 MHz 75% higher effective memory clock speed
Slightly higher memory bandwidth 22.4 GB/s vs 6.4 GB/s Around 3.5x higher memory bandwidth
Higher memory clock speed 700 MHz vs 400 MHz 75% higher memory clock speed
More texture mapping units 32 vs 8 24 more texture mapping units
More shading units 320 vs 80 240 more shading units
Wider memory bus 128 bit vs 64 bit 2x wider memory bus
Better PassMark direct compute score 607 vs 83 More than 7.2x better PassMark direct compute score

Benchmarks Real world tests of Radeon HD 5450 vs 4650

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 5450
1,713.96
Radeon HD 4650
1,732.76

PassMark Direct Compute Measures performance of general-purpose computing using Microsoft DirectCompute

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