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Differences What are the advantages of each

Front view of Radeon R5 M445

Reasons to consider the
AMD Radeon R5 M445

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GPUBoss is not aware of any important advantages of the AMD Radeon R5 M445 vs the Leadtek GeForce GT 640.

Front view of GeForce GT 640

Reasons to consider the
Leadtek GeForce GT 640

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More render output processors 16 vs 8 Twice as many render output processors

Features Key features of the Radeon R5 M445  vs GeForce GT 640 

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

Radeon R5 M445
14.4 GB/s
GeForce GT 640
28.8 GB/s

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

Radeon R5 M445
7.2 GPixel/s
GeForce GT 640
7.22 GPixel/s

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

Radeon R5 M445
21.6 GTexel/s
GeForce GT 640
28.86 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R5 M445
691.2 GFLOPS
GeForce GT 640
692.7 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

Radeon R5 M445  vs
GeForce GT 640 
GPU brand AMD Nvidia
GPU name Meso GK107
Clock speed 900 MHz 902 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GT 640 902 MHz 2 GB

raw performance

Shading units 384 384
Texture mapping units 24 32
Render output processors 8 16
Pixel rate 7.2 GPixel/s 7.22 GPixel/s
Texture rate 21.6 GTexel/s 28.86 GTexel/s
Floating-point performance 691.2 GFLOPS 692.7 GFLOPS

memory

Radeon R5 M445  vs
GeForce GT 640 
Memory clock speed 900 MHz 900 MHz
Effective memory clock speed 1,800 MHz 1,800 MHz
Memory bus 64 bit 128 bit
Memory 1,024 MB 1,024 MB
Memory type DDR3 DDR3
Memory bandwidth 14.4 GB/s 28.8 GB/s

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