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Differences What are the advantages of each

Front view of Radeon HD 5450 PCIe x1

Reasons to consider the
ATi Radeon HD 5450 PCIe x1

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Much lower TDP 19W vs 365W 19.2x lower TDP
Front view of GeForce GTX 590

Reasons to consider the
Nvidia GeForce GTX 590

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Is dual GPU Yes vs No About half of graphics cards are dual GPU
Much higher memory bandwidth 328 GB/s vs 8 GB/s 41x higher memory bandwidth
Significantly higher effective memory clock speed 3,416 MHz vs 1,000 MHz Around 3.5x higher effective memory clock speed
Many more render output processors 96 vs 4 92 more render output processors
Significantly better floating-point performance 2,488.4 GFLOPS vs 104 GFLOPS Around 24x better floating-point performance
More memory 3,072 MB vs 512 MB 6x more memory
Much wider memory bus 768 bit vs 64 bit 12x wider memory bus
Significantly higher pixel rate 38.92 GPixel/s vs 2.6 GPixel/s Around 15x higher pixel rate
Many more texture mapping units 128 vs 8 120 more texture mapping units
Significantly higher texture rate 77.8 GTexel/s vs 5.2 GTexel/s Around 15x higher texture rate
Significantly more shading units 1,024 vs 80 944 more shading units
Significantly higher memory clock speed 854 MHz vs 500 MHz More than 70% higher memory clock speed

Features Key features of the Radeon HD 5450 PCIe x1  vs GeForce GTX 590 

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

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

Radeon HD 5450 PCIe x1
2.6 GPixel/s
GeForce GTX 590
38.92 GPixel/s

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

Radeon HD 5450 PCIe x1
5.2 GTexel/s
GeForce GTX 590
77.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 590
2,488.4 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

gpu

Radeon HD 5450 PCIe x1  vs
GeForce GTX 590 
GPU brand ATI Nvidia
GPU name Cedar GF110
Market Desktop Desktop
Clock speed 650 MHz 608 MHz
Is dual GPU No Yes
Reference card None None

raw performance

Shading units 80 1,024
Texture mapping units 8 128
Render output processors 4 96
Pixel rate 2.6 GPixel/s 38.92 GPixel/s
Texture rate 5.2 GTexel/s 77.8 GTexel/s
Floating-point performance 104 GFLOPS 2,488.4 GFLOPS

memory

Radeon HD 5450 PCIe x1  vs
GeForce GTX 590 
Memory clock speed 500 MHz 854 MHz
Effective memory clock speed 1,000 MHz 3,416 MHz
Memory bus 64 bit 768 bit
Memory 512 MB 3,072 MB
Memory type DDR3 GDDR5
Memory bandwidth 8 GB/s 328 GB/s

noise and power

TDP 19W 365W

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