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Differences What are the advantages of each

Front view of GeForce GT 640 Rebrand

Reasons to consider the
Nvidia GeForce GT 640 Rebrand

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Slightly better 3DMark vantage graphics score 9,030 vs 6,640 More than 35% better 3DMark vantage graphics score
More render output processors 24 vs 16 8 more render output processors
Wider memory bus 192 bit vs 128 bit 50% wider memory bus
Lower TDP 75W vs 105W Around 30% lower TDP
Front view of GeForce GT 545

Reasons to consider the
Nvidia GeForce GT 545

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Significantly higher effective memory clock speed 4,000 MHz vs 1,600 MHz 2.5x higher effective memory clock speed
Higher clock speed 871 MHz vs 720 MHz More than 20% higher clock speed
Higher memory bandwidth 64 GB/s vs 38.4 GB/s More than 65% higher memory bandwidth
Higher memory clock speed 1,000 MHz vs 800 MHz 25% higher memory clock speed

Benchmarks Real world tests of GeForce GT 640 Rebrand vs 545

3DMark 11 Graphics Industry standard benchmark that tests DirectX 11 GPU performance

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

3DMark06 Industry standard benchmark that tests DirectX 9 GPU performance

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