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Differences What are the advantages of each

Front view of Radeon HD 4450

Reasons to consider the
ATi Radeon HD 4450

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Higher clock speed 600 MHz vs 425 MHz More than 40% higher clock speed
Lower TDP 25W vs 100W 4x lower TDP
Front view of GeForce GTX 480M

Reasons to consider the
Nvidia GeForce GTX 480M

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Higher effective memory clock speed 2,400 MHz vs 800 MHz 3x higher effective memory clock speed
Higher memory bandwidth 76.8 GB/s vs 6.4 GB/s Around 12x higher memory bandwidth
More memory 2,048 MB vs 512 MB 4x more memory
Significantly more render output processors 32 vs 4 28 more render output processors
More texture mapping units 44 vs 8 36 more texture mapping units
Slightly more shading units 352 vs 80 272 more shading units
Higher memory clock speed 600 MHz vs 400 MHz 50% higher memory clock speed
Wider memory bus 256 bit vs 64 bit 4x wider memory bus

Features Key features of the Radeon HD 4450  vs GeForce GTX 480M 

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

Radeon HD 4450
6.4 GB/s
GeForce GTX 480M
76.8 GB/s

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

Radeon HD 4450
2.4 GPixel/s
GeForce GTX 480M
9.35 GPixel/s

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

Radeon HD 4450
4.8 GTexel/s
GeForce GTX 480M
18.7 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4450
GeForce GTX 480M
598.4 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 4450  vs
GeForce GTX 480M 
GPU brand ATI Nvidia
GPU name RV710 GF100
Market Desktop Laptop
Clock speed 600 MHz 425 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 80 352
Texture mapping units 8 44
Render output processors 4 32
Pixel rate 2.4 GPixel/s 9.35 GPixel/s
Texture rate 4.8 GTexel/s 18.7 GTexel/s
Floating-point performance 96 GFLOPS 598.4 GFLOPS


Radeon HD 4450  vs
GeForce GTX 480M 
Memory clock speed 400 MHz 600 MHz
Effective memory clock speed 800 MHz 2,400 MHz
Memory bus 64 bit 256 bit
Memory 512 MB 2,048 MB
Memory type DDR2 GDDR5
Memory bandwidth 6.4 GB/s 76.8 GB/s

noise and power

TDP 25W 100W


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