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Differences What are the advantages of each

Front view of Radeon HD 6400

Reasons to consider the
AMD Radeon HD 6400

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Slightly more shading units 160 vs 48 112 more shading units
Slightly lower TDP 18W vs 29W Around 40% lower TDP
Front view of GeForce GT 625

Reasons to consider the
Nvidia GeForce GT 625

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Higher clock speed 874 MHz vs 625 MHz Around 40% higher clock speed

Features Key features of the Radeon HD 6400  vs GeForce GT 625 

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

Radeon HD 6400
12.8 GB/s
GeForce GT 625
13.2 GB/s

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

Radeon HD 6400
2.5 GPixel/s
GeForce GT 625
1.75 GPixel/s

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

Radeon HD 6400
5 GTexel/s
GeForce GT 625
6.99 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6400
GeForce GT 625
167.81 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


Radeon HD 6400  vs
GeForce GT 625 
GPU brand AMD Nvidia
GPU name Caicos LE GF119
Market Desktop Desktop
Clock speed 625 MHz 874 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 160 48
Texture mapping units 8 8
Render output processors 4 4
Pixel rate 2.5 GPixel/s 1.75 GPixel/s
Texture rate 5 GTexel/s 6.99 GTexel/s
Floating-point performance 200 GFLOPS 167.81 GFLOPS


Radeon HD 6400  vs
GeForce GT 625 
Memory clock speed 800 MHz 825 MHz
Effective memory clock speed 1,600 MHz 1,650 MHz
Memory bus 64 bit 64 bit
Memory 512 MB 1,024 MB
Memory type GDDR3 DDR3
Memory bandwidth 12.8 GB/s 13.2 GB/s

noise and power

TDP 18W 29W


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