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Differences What are the advantages of each

Front view of Radeon R5 230

Reasons to consider the
Sapphire Radeon R5 230

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Higher clock speed 625 MHz vs 450 MHz Around 40% higher clock speed
Front view of GeForce 320M Mac

Reasons to consider the
Nvidia GeForce 320M Mac

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Slightly more render output processors 8 vs 4 Twice as many render output processors
Slightly more texture mapping units 16 vs 8 Twice as many texture mapping units

Features Key features of the Radeon R5 230  vs GeForce 320M Mac 

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

Radeon R5 230
2.5 GPixel/s
GeForce 320M Mac
3.6 GPixel/s

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

Radeon R5 230
5 GTexel/s
GeForce 320M Mac
7.2 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R5 230
200 GFLOPS
GeForce 320M Mac
91.2 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

render output processors GPU commponents responsible for transform pixels as they flow between memory buffers

Specifications Full list of technical specs

gpu

Radeon R5 230  vs
GeForce 320M Mac 
GPU brand AMD Nvidia
GPU name Caicos MCP89
Clock speed 625 MHz 450 MHz
Is dual GPU No No
Reference card AMD Radeon R5 230 625 MHz 1 GB None

noise and power

TDP 19W 23W

raw performance

Radeon R5 230  vs
GeForce 320M Mac 
Shading units 160 48
Texture mapping units 8 16
Render output processors 4 8
Pixel rate 2.5 GPixel/s 3.6 GPixel/s
Texture rate 5 GTexel/s 7.2 GTexel/s
Floating-point performance 200 GFLOPS 91.2 GFLOPS

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