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Differences What are the advantages of each

Front view of GeForce GT 710

Reasons to consider the
Nvidia GeForce GT 710

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Higher clock speed 954 MHz vs 720 MHz Around 35% higher clock speed
Higher memory clock speed 900 MHz vs 800 MHz Around 15% higher memory clock speed
Lower TDP 19W vs 75W 3.9x lower TDP
Front view of GeForce GT 640 Rebrand

Reasons to consider the
Nvidia GeForce GT 640 Rebrand

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Higher memory bandwidth 38.4 GB/s vs 14.4 GB/s Around 2.8x higher memory bandwidth
More render output processors 24 vs 8 Three times as many render output processors
Wider memory bus 192 bit vs 64 bit 3x wider memory bus

Features Key features of the GeForce GT 710  vs 640 Rebrand 

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

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

GeForce GT 710
3.82 GPixel/s
GeForce GT 640 Rebrand
4.32 GPixel/s

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

GeForce GT 710
15.26 GTexel/s
GeForce GT 640 Rebrand
17.28 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 710
366.3 GFLOPS
GeForce GT 640 Rebrand
414.7 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

Specifications Full list of technical specs

gpu

GeForce GT 710  vs
640 Rebrand 
GPU brand Nvidia Nvidia
GPU name GK119 GF116
Market Desktop Desktop
Clock speed 954 MHz 720 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 192 144
Texture mapping units 16 24
Render output processors 8 24
Pixel rate 3.82 GPixel/s 4.32 GPixel/s
Texture rate 15.26 GTexel/s 17.28 GTexel/s
Floating-point performance 366.3 GFLOPS 414.7 GFLOPS

memory

GeForce GT 710  vs
640 Rebrand 
Memory clock speed 900 MHz 800 MHz
Effective memory clock speed 1,800 MHz 1,600 MHz
Memory bus 64 bit 192 bit
Memory 2,048 MB 1,536 MB
Memory type DDR3 DDR3
Memory bandwidth 14.4 GB/s 38.4 GB/s

noise and power

TDP 19W 75W

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