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Differences What are the advantages of each

Front view of Radeon RX 455

Reasons to consider the
AMD Radeon RX 455

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Significantly higher clock speed 1,050 MHz vs 700 MHz 50% higher clock speed
Much higher effective memory clock speed 6,500 MHz vs 2,020 MHz Around 3.2x higher effective memory clock speed
More memory 2,048 MB vs 512 MB 4x more memory
Better floating-point performance 1,612.8 GFLOPS vs 392 GFLOPS More than 4x better floating-point performance
Higher memory bandwidth 104 GB/s vs 64.6 GB/s More than 60% higher memory bandwidth
Significantly higher memory clock speed 1,625 MHz vs 1,010 MHz More than 60% higher memory clock speed
More shading units 768 vs 112 656 more shading units
Lower TDP 100W vs 125W 20% lower TDP
Front view of GeForce GT 8800

Reasons to consider the
ASUS GeForce GT 8800

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Slightly more texture mapping units 56 vs 48 8 more texture mapping units
Slightly wider memory bus 256 bit vs 128 bit 2x wider memory bus

Features Key features of the Radeon RX 455  vs GeForce GT 8800 

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

Radeon RX 455
104 GB/s
GeForce GT 8800
64.6 GB/s

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

Radeon RX 455
16.8 GPixel/s
GeForce GT 8800
11.2 GPixel/s

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

Radeon RX 455
50.4 GTexel/s
GeForce GT 8800
39.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon RX 455
1,612.8 GFLOPS
GeForce GT 8800
392 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 RX 455  vs
GeForce GT 8800 
GPU brand AMD Nvidia
GPU name Tobago G92
Clock speed 1,050 MHz 700 MHz
Is dual GPU No No
Reference card None Nvidia GeForce GT 8800 GT 600 MHz 512 MB

raw performance

Shading units 768 112
Texture mapping units 48 56
Render output processors 16 16
Pixel rate 16.8 GPixel/s 11.2 GPixel/s
Texture rate 50.4 GTexel/s 39.2 GTexel/s
Floating-point performance 1,612.8 GFLOPS 392 GFLOPS

memory

Radeon RX 455  vs
GeForce GT 8800 
Memory clock speed 1,625 MHz 1,010 MHz
Effective memory clock speed 6,500 MHz 2,020 MHz
Memory bus 128 bit 256 bit
Memory 2,048 MB 512 MB
Memory type GDDR5 GDDR3
Memory bandwidth 104 GB/s 64.6 GB/s

noise and power

TDP 100W 125W

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