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Differences What are the advantages of each

Front view of GeForce GT 640 Rebrand

Reasons to consider the
ASUS GeForce GT 640 Rebrand

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More memory 3,072 MB vs 2,048 MB 50% more memory
More render output processors 24 vs 8 Three times as many render output processors
Front view of GeForce GT 1030

Reasons to consider the
Nvidia GeForce GT 1030

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Significantly higher clock speed 1,227 MHz vs 720 MHz More than 70% higher clock speed
Significantly higher effective memory clock speed 6,008 MHz vs 1,600 MHz More than 3.8x higher effective memory clock speed
Significantly higher memory clock speed 1,502 MHz vs 800 MHz Around 90% higher memory clock speed
Slightly better floating-point performance 1,127 GFLOPS vs 414.7 GFLOPS Around 2.8x better floating-point performance
Lower TDP 30W vs 75W 2.5x lower TDP

Features Key features of the GeForce GT 640 Rebrand  vs 1030 

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 640 Rebrand
4.32 GPixel/s
GeForce GT 1030
11.74 GPixel/s

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

GeForce GT 640 Rebrand
17.28 GTexel/s
GeForce GT 1030
35.23 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GT 640 Rebrand
414.7 GFLOPS
GeForce GT 1030
1,127 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 640 Rebrand  vs
1030 
GPU brand Nvidia Nvidia
GPU name GF116 GP108
Clock speed 720 MHz 1,227 MHz
Is dual GPU No No
Reference card Nvidia GeForce GT 640 Rebrand GeForce GT 640 OEM Rebrand 720 MHz 1.5 GB None

raw performance

Shading units 144 384
Texture mapping units 24 24
Render output processors 24 8
Pixel rate 4.32 GPixel/s 11.74 GPixel/s
Texture rate 17.28 GTexel/s 35.23 GTexel/s
Floating-point performance 414.7 GFLOPS 1,127 GFLOPS

memory

GeForce GT 640 Rebrand  vs
1030 
Memory clock speed 800 MHz 1,502 MHz
Effective memory clock speed 1,600 MHz 6,008 MHz
Memory bus 192 bit 64 bit
Memory 3,072 MB 2,048 MB
Memory type DDR3 GDDR5
Memory bandwidth 38.4 GB/s 48.06 GB/s

noise and power

TDP 75W 30W

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