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Differences What are the advantages of each

Front view of Radeon HD 6450

Reasons to consider the
AMD Radeon HD 6450

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Significantly higher effective memory clock speed 3,200 MHz vs 1,584 MHz More than 2x higher effective memory clock speed
Lower TDP 18W vs 75W 4.2x lower TDP
Front view of GeForce GT 130 Mac

Reasons to consider the
Nvidia GeForce GT 130 Mac

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Wider memory bus 192 bit vs 64 bit 3x wider memory bus
More render output processors 12 vs 4 Three times as many render output processors
More texture mapping units 24 vs 8 Three times as many texture mapping units

Features Key features of the Radeon HD 6450  vs GeForce GT 130 Mac 

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

Radeon HD 6450
25.6 GB/s
GeForce GT 130 Mac
38.02 GB/s

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

Radeon HD 6450
2.5 GPixel/s
GeForce GT 130 Mac
7.2 GPixel/s

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

Radeon HD 6450
5 GTexel/s
GeForce GT 130 Mac
14.4 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6450
200 GFLOPS
GeForce GT 130 Mac
144 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 HD 6450  vs
GeForce GT 130 Mac 
GPU brand AMD Nvidia
GPU name Caicos PRO G94 B1
Market Desktop Desktop
Clock speed 625 MHz 600 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 160 48
Texture mapping units 8 24
Render output processors 4 12
Pixel rate 2.5 GPixel/s 7.2 GPixel/s
Texture rate 5 GTexel/s 14.4 GTexel/s
Floating-point performance 200 GFLOPS 144 GFLOPS

memory

Radeon HD 6450  vs
GeForce GT 130 Mac 
Memory clock speed 800 MHz 792 MHz
Effective memory clock speed 3,200 MHz 1,584 MHz
Memory bus 64 bit 192 bit
Memory 512 MB 512 MB
Memory type GDDR5 GDDR3
Memory bandwidth 25.6 GB/s 38.02 GB/s

noise and power

TDP 18W 75W

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