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Differences What are the advantages of each

Front view of Radeon HD 6450

Reasons to consider the
AMD Radeon HD 6450

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Higher effective memory clock speed 3,200 MHz vs 1,986 MHz More than 60% higher effective memory clock speed
Significantly lower TDP 18W vs 110W 6.1x lower TDP
Front view of Radeon HD 4850

Reasons to consider the
ATi Radeon HD 4850

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Much better 3DMark06 score 14,160 vs 623 Around 22.8x better 3DMark06 score
Better 3DMark vantage graphics score 7,436 vs 2,181 Around 3.5x better 3DMark vantage graphics score
Higher memory bandwidth 63.55 GB/s vs 25.6 GB/s Around 2.5x higher memory bandwidth
Better floating-point performance 1,000 GFLOPS vs 200 GFLOPS 5x better floating-point performance
Significantly better sky diver factor score 124.95 vs 28.94 More than 4.2x better sky diver factor score
More shading units 800 vs 160 640 more shading units
Significantly wider memory bus 256 bit vs 64 bit 4x wider memory bus
Higher texture rate 25 GTexel/s vs 5 GTexel/s 5x higher texture rate
More texture mapping units 40 vs 8 32 more texture mapping units
More render output processors 16 vs 4 12 more render output processors
Slightly higher pixel rate 10 GPixel/s vs 2.5 GPixel/s 4x higher pixel rate
More compute units 10 vs 2 8 more compute units
Higher memory clock speed 993 MHz vs 800 MHz Around 25% higher memory clock speed

Benchmarks Real world tests of Radeon HD 6450 vs 4850

3DMark Vantage Graphics Industry standard benchmark that tests DirectX 10 GPU performance

3DMark06 Industry standard benchmark that tests DirectX 9 GPU performance

Fire Strike Factor Data courtesy FutureMark

Sky Diver Factor Data courtesy FutureMark

Cloud Gate Factor Data courtesy FutureMark

Reviews Word on the street

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