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Differences What are the advantages of each

Front view of Radeon HD 3690

Reasons to consider the
ATi Radeon HD 3690

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More render output processors 16 vs 4 12 more render output processors
Slightly higher pixel rate 10.72 GPixel/s vs 3.24 GPixel/s More than 3.2x higher pixel rate
More shading units 320 vs 96 224 more shading units
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 1,660 MHz Around 95% higher effective memory clock speed
Higher clock speed 810 MHz vs 670 MHz More than 20% higher clock speed
Higher memory bandwidth 51.2 GB/s vs 26.56 GB/s Around 95% higher memory bandwidth
Slightly more memory 1,024 MB vs 256 MB 4x more memory

Features Key features of the Radeon HD 3690  vs GeForce GT 630 

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

Radeon HD 3690
26.56 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 3690
10.72 GPixel/s
GeForce GT 630
3.24 GPixel/s

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

Radeon HD 3690
10.72 GTexel/s
GeForce GT 630
12.96 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 3690
428.8 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


Radeon HD 3690  vs
GeForce GT 630 
GPU brand ATI Nvidia
GPU name RV670 GF108
Market Desktop Desktop
Clock speed 670 MHz 810 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GT 630 810 MHz 1 GB

raw performance

Shading units 320 96
Texture mapping units 16 16
Render output processors 16 4
Pixel rate 10.72 GPixel/s 3.24 GPixel/s
Texture rate 10.72 GTexel/s 12.96 GTexel/s
Floating-point performance 428.8 GFLOPS 311.04 GFLOPS


Radeon HD 3690  vs
GeForce GT 630 
Memory clock speed 830 MHz 800 MHz
Effective memory clock speed 1,660 MHz 3,200 MHz
Memory bus 128 bit 128 bit
Memory 256 MB 1,024 MB
Memory type GDDR3 GDDR5
Memory bandwidth 26.56 GB/s 51.2 GB/s

noise and power

TDP 75W 65W

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