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Differences What are the advantages of each

Front view of Radeon HD 5490

Reasons to consider the
ATi Radeon HD 5490

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Higher clock speed 650 MHz vs 550 MHz Around 20% higher clock speed
Lower TDP 19W vs 69W 3.6x lower TDP
Front view of GeForce GT 240

Reasons to consider the
Nvidia GeForce GT 240

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Significantly higher effective memory clock speed 3,400 MHz vs 1,000 MHz Around 3.5x higher effective memory clock speed
Higher memory bandwidth 54.4 GB/s vs 8 GB/s More than 6.8x higher memory bandwidth
Significantly higher memory clock speed 850 MHz vs 500 MHz 70% higher memory clock speed
More texture mapping units 32 vs 8 24 more texture mapping units
Wider memory bus 128 bit vs 64 bit 2x wider memory bus

Features Key features of the Radeon HD 5490  vs GeForce GT 240 

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

GeForce GT 240
54.4 GB/s

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

Radeon HD 5490
2.6 GPixel/s
GeForce GT 240
4.4 GPixel/s

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

Radeon HD 5490
5.2 GTexel/s
GeForce GT 240
17.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 5490
104 GFLOPS
GeForce GT 240
257.3 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 5490  vs
GeForce GT 240 
GPU brand ATI Nvidia
GPU name Cedar GT215
Market Desktop Desktop
Clock speed 650 MHz 550 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 80 96
Texture mapping units 8 32
Render output processors 4 8
Pixel rate 2.6 GPixel/s 4.4 GPixel/s
Texture rate 5.2 GTexel/s 17.6 GTexel/s
Floating-point performance 104 GFLOPS 257.3 GFLOPS

memory

Radeon HD 5490  vs
GeForce GT 240 
Memory clock speed 500 MHz 850 MHz
Effective memory clock speed 1,000 MHz 3,400 MHz
Memory bus 64 bit 128 bit
Memory 1,024 MB 1,024 MB
Memory type GDDR3 GDDR5
Memory bandwidth 8 GB/s 54.4 GB/s

noise and power

TDP 19W 69W

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