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Differences What are the advantages of each

Front view of GeForce GT 620

Reasons to consider the
Nvidia GeForce GT 620

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Much higher clock speed 810 MHz vs 550 MHz More than 45% higher clock speed
Lower TDP 30W vs 69W 2.3x lower TDP
Front view of GeForce GT 240

Reasons to consider the
Nvidia GeForce GT 240

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Higher effective memory clock speed 3,400 MHz vs 1,796 MHz Around 90% higher effective memory clock speed
More memory 1,024 MB vs 512 MB 2x more memory
Higher memory bandwidth 54.4 GB/s vs 14.4 GB/s More than 3.8x higher memory bandwidth
More texture mapping units 32 vs 8 24 more texture mapping units
Slightly more render output processors 8 vs 4 Twice as many render output processors
Wider memory bus 128 bit vs 64 bit 2x wider memory bus

Benchmarks Real world tests of GeForce GT 620 vs 240

Passmark Industry standard benchmark for overall graphics card performance

Features Key features of the GeForce GT 620  vs 240 

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

GeForce GT 620
14.4 GB/s
GeForce GT 240
54.4 GB/s

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

GeForce GT 620
1.62 GPixel/s
GeForce GT 240
4.4 GPixel/s

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

GeForce GT 620
6.48 GTexel/s
GeForce GT 240
17.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 620
155.5 GFLOPS
GeForce GT 240
257.3 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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