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Differences What are the advantages of each

Front view of GeForce GT 540M

Reasons to consider the
Nvidia GeForce GT 540M

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Better PassMark score 650 vs 285 More than 2.2x better PassMark score
Higher memory clock speed 900 MHz vs 800 MHz Around 15% higher memory clock speed
Front view of GeForce 9650M GS

Reasons to consider the
Nvidia GeForce 9650M GS

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Slightly more render output processors 8 vs 4 Twice as many render output processors
Slightly lower TDP 29W vs 35W More than 15% lower TDP

Benchmarks Real world tests of GeForce GT 540M vs 9650M GS

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Features Key features of the GeForce GT 540M  vs 9650M GS 

memory bandwidth Rate at which data can be read from or stored in onboard memory

GeForce GT 540M
28.8 GB/s
GeForce 9650M GS
25.6 GB/s

pixel rate Number of pixels a graphics card can render to the screen every second

GeForce GT 540M
2.69 GPixel/s
GeForce 9650M GS
5 GPixel/s

texture rate Speed at which a graphics card can perform texture mapping

GeForce GT 540M
10.75 GTexel/s
GeForce 9650M GS
10 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 540M
258.05 GFLOPS
GeForce 9650M GS
80 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

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