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Differences What are the advantages of each

Front view of GeForce GTX 275

Reasons to consider the
Nvidia GeForce GTX 275

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Significantly higher memory bandwidth 127 GB/s vs 51.2 GB/s Around 2.5x higher memory bandwidth
Significantly more texture mapping units 80 vs 16 64 more texture mapping units
Significantly more render output processors 28 vs 4 24 more render output processors
Much wider memory bus 448 bit vs 128 bit 3.5x wider memory bus
Higher texture rate 50.64 GTexel/s vs 12.96 GTexel/s Around 4x higher texture rate
Higher pixel rate 17.72 GPixel/s vs 3.24 GPixel/s Around 5.5x higher pixel rate
Significantly better cloud gate factor score 14.08 vs 9.76 Around 45% better cloud gate factor score
Higher memory clock speed 1,134 MHz vs 800 MHz More than 40% higher memory clock speed
Front view of GeForce GT 630

Reasons to consider the
EVGA GeForce GT 630

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Higher clock speed 810 MHz vs 633 MHz Around 30% higher clock speed
Higher effective memory clock speed 3,200 MHz vs 2,268 MHz More than 40% higher effective memory clock speed
Much lower TDP 65W vs 219W 3.4x lower TDP

Benchmarks Real world tests of GeForce GTX 275 vs GT 630

Cloud Gate Factor Data courtesy FutureMark

Features Key features of the GeForce GTX 275  vs GT 630 

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

GeForce GTX 275
127 GB/s
GeForce GT 630
51.2 GB/s

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

GeForce GTX 275
17.72 GPixel/s
GeForce GT 630
3.24 GPixel/s

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

GeForce GTX 275
50.64 GTexel/s
GeForce GT 630
12.96 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 275
673.9 GFLOPS
GeForce GT 630
311.04 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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