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Differences What are the advantages of each

Front view of Radeon HD 4520

Reasons to consider the
ATi Radeon HD 4520

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Lower TDP 25W vs 65W 2.6x lower TDP
Front view of GeForce GT 630

Reasons to consider the
EVGA GeForce GT 630

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Significantly higher effective memory clock speed 3,200 MHz vs 800 MHz 4x higher effective memory clock speed
Higher clock speed 810 MHz vs 600 MHz 35% higher clock speed
Higher memory bandwidth 51.2 GB/s vs 6.4 GB/s 8x higher memory bandwidth
Significantly higher memory clock speed 800 MHz vs 400 MHz 2x higher memory clock speed
Wider memory bus 128 bit vs 64 bit 2x wider memory bus

Features Key features of the Radeon HD 4520  vs GeForce GT 630 

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

Radeon HD 4520
6.4 GB/s
GeForce GT 630
51.2 GB/s

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

Radeon HD 4520
2.4 GPixel/s
GeForce GT 630
3.24 GPixel/s

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

Radeon HD 4520
4.8 GTexel/s
GeForce GT 630
12.96 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 4520
96 GFLOPS
GeForce GT 630
311.04 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 4520  vs
GeForce GT 630 
GPU brand ATI Nvidia
GPU name RV710 GF108
Market Desktop Desktop
Clock speed 600 MHz 810 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GT 630 810 MHz 1 GB

raw performance

Shading units 80 96
Texture mapping units 8 16
Render output processors 4 4
Pixel rate 2.4 GPixel/s 3.24 GPixel/s
Texture rate 4.8 GTexel/s 12.96 GTexel/s
Floating-point performance 96 GFLOPS 311.04 GFLOPS

memory

Radeon HD 4520  vs
GeForce GT 630 
Memory clock speed 400 MHz 800 MHz
Effective memory clock speed 800 MHz 3,200 MHz
Memory bus 64 bit 128 bit
Memory 512 MB 1,024 MB
Memory type DDR2 GDDR5
Memory bandwidth 6.4 GB/s 51.2 GB/s

noise and power

TDP 25W 65W

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