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Differences What are the advantages of each

Front view of Radeon HD 5450 PCI

Reasons to consider the
ATi Radeon HD 5450 PCI

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Much lower TDP 19W vs 244W 12.8x lower TDP
Front view of GeForce GTX 580

Reasons to consider the

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Much higher memory bandwidth 193.5 GB/s vs 5.33 GB/s More than 36.2x higher memory bandwidth
Much higher effective memory clock speed 4,032 MHz vs 666 MHz More than 6x higher effective memory clock speed
Higher clock speed 810 MHz vs 650 MHz Around 25% higher clock speed
Better floating-point performance 1,659 GFLOPS vs 104 GFLOPS Around 16x better floating-point performance
Many more render output processors 48 vs 4 44 more render output processors
Higher pixel rate 25.92 GPixel/s vs 2.6 GPixel/s Around 10x higher pixel rate
Higher texture rate 51.84 GTexel/s vs 5.2 GTexel/s Around 10x higher texture rate
More memory 1,536 MB vs 512 MB 3x more memory
Much wider memory bus 384 bit vs 64 bit 6x wider memory bus
Significantly more texture mapping units 64 vs 8 56 more texture mapping units
Much higher memory clock speed 1,008 MHz vs 333 MHz More than 3x higher memory clock speed
More shading units 512 vs 80 432 more shading units

Features Key features of the Radeon HD 5450 PCI  vs GeForce GTX 580 

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

Radeon HD 5450 PCI
5.33 GB/s
GeForce GTX 580
193.5 GB/s

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

Radeon HD 5450 PCI
2.6 GPixel/s
GeForce GTX 580
25.92 GPixel/s

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

Radeon HD 5450 PCI
5.2 GTexel/s
GeForce GTX 580
51.84 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 5450 PCI
GeForce GTX 580
1,659 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 5450 PCI  vs
GeForce GTX 580 
GPU brand ATI Nvidia
GPU name Cedar GF110
Market Desktop Desktop
Clock speed 650 MHz 810 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GTX 580 772 MHz 1.5 GB

raw performance

Shading units 80 512
Texture mapping units 8 64
Render output processors 4 48
Pixel rate 2.6 GPixel/s 25.92 GPixel/s
Texture rate 5.2 GTexel/s 51.84 GTexel/s
Floating-point performance 104 GFLOPS 1,659 GFLOPS


Radeon HD 5450 PCI  vs
GeForce GTX 580 
Memory clock speed 333 MHz 1,008 MHz
Effective memory clock speed 666 MHz 4,032 MHz
Memory bus 64 bit 384 bit
Memory 512 MB 1,536 MB
Memory type DDR2 GDDR5
Memory bandwidth 5.33 GB/s 193.5 GB/s

noise and power

TDP 19W 244W


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