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Differences What are the advantages of each

Front view of GeForce GTX 550 Ti

Reasons to consider the
Nvidia GeForce GTX 550 Ti

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Significantly higher effective memory clock speed 4,104 MHz vs 1,800 MHz More than 2.2x higher effective memory clock speed
Significantly higher memory bandwidth 98.5 GB/s vs 14.4 GB/s More than 6.8x higher memory bandwidth
More render output processors 24 vs 8 Three times as many render output processors
Wider memory bus 192 bit vs 64 bit 3x wider memory bus
Slightly higher texture rate 28.8 GTexel/s vs 14.43 GTexel/s Around 2x higher texture rate
More texture mapping units 32 vs 16 Twice as many texture mapping units
Higher memory clock speed 1,026 MHz vs 900 MHz Around 15% higher memory clock speed
Front view of GeForce GT 630 PCIe x8

Reasons to consider the
Nvidia GeForce GT 630 PCIe x8

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More memory 2,048 MB vs 1,024 MB 2x more memory
Slightly more shading units 384 vs 192 Twice as many shading units
Significantly lower TDP 25W vs 116W 4.6x lower TDP

Features Key features of the GeForce GTX 550 Ti  vs GT 630 PCIe x8 

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

GeForce GTX 550 Ti
7.2 GPixel/s
GeForce GT 630 PCIe x8
7.22 GPixel/s

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

GeForce GTX 550 Ti
28.8 GTexel/s
GeForce GT 630 PCIe x8
14.43 GTexel/s

floating point performance How fast the gpu can crunch numbers

GeForce GTX 550 Ti
691.2 GFLOPS
GeForce GT 630 PCIe x8
692.7 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

GeForce GTX 550 Ti  vs
GT 630 PCIe x8 
GPU brand Nvidia Nvidia
GPU name GF116 GK208
Market Desktop Desktop
Clock speed 900 MHz 902 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 192 384
Texture mapping units 32 16
Render output processors 24 8
Pixel rate 7.2 GPixel/s 7.22 GPixel/s
Texture rate 28.8 GTexel/s 14.43 GTexel/s
Floating-point performance 691.2 GFLOPS 692.7 GFLOPS

memory

GeForce GTX 550 Ti  vs
GT 630 PCIe x8 
Memory clock speed 1,026 MHz 900 MHz
Effective memory clock speed 4,104 MHz 1,800 MHz
Memory bus 192 bit 64 bit
Memory 1,024 MB 2,048 MB
Memory type GDDR5 DDR3
Memory bandwidth 98.5 GB/s 14.4 GB/s

noise and power

TDP 116W 25W

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