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Differences What are the advantages of each

Front view of Radeon HD 5630

Reasons to consider the
ATi Radeon HD 5630

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Slightly more shading units 320 vs 96 224 more shading units
Slightly wider memory bus 128 bit vs 64 bit 2x wider memory bus
Front view of GeForce 820M

Reasons to consider the
Nvidia GeForce 820M

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Higher effective memory clock speed 1,800 MHz vs 780 MHz More than 2.2x higher effective memory clock speed
Significantly higher memory clock speed 900 MHz vs 390 MHz More than 2.2x higher memory clock speed
Lower TDP 15W vs 39W 2.6x lower TDP

Features Key features of the Radeon HD 5630  vs GeForce 820M 

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

Radeon HD 5630
12.48 GB/s
GeForce 820M
14.4 GB/s

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

Radeon HD 5630
5.2 GPixel/s
GeForce 820M
2.5 GPixel/s

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

Radeon HD 5630
10.4 GTexel/s
GeForce 820M
10 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 5630
416 GFLOPS
GeForce 820M
240 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 5630  vs
GeForce 820M 
GPU brand ATI Nvidia
GPU name Redwood GF117
Market Desktop Laptop
Clock speed 650 MHz 625 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 320 96
Texture mapping units 16 16
Render output processors 8 8
Pixel rate 5.2 GPixel/s 2.5 GPixel/s
Texture rate 10.4 GTexel/s 10 GTexel/s
Floating-point performance 416 GFLOPS 240 GFLOPS

memory

Radeon HD 5630  vs
GeForce 820M 
Memory clock speed 390 MHz 900 MHz
Effective memory clock speed 780 MHz 1,800 MHz
Memory bus 128 bit 64 bit
Memory 1,024 MB 1,024 MB
Memory type GDDR3 DDR3
Memory bandwidth 12.48 GB/s 14.4 GB/s

noise and power

TDP 39W 15W

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