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Differences What are the advantages of each

Front view of Radeon HD 6750M Mac

Reasons to consider the
AMD Radeon HD 6750M Mac

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Higher clock speed 598 MHz vs 500 MHz Around 20% higher clock speed
Higher effective memory clock speed 3,176 MHz vs 1,580 MHz More than 2x higher effective memory clock speed
Higher memory bandwidth 50.8 GB/s vs 25.28 GB/s More than 2x higher memory bandwidth
Slightly better floating-point performance 574.1 GFLOPS vs 105.6 GFLOPS Around 5.5x better floating-point performance
More shading units 480 vs 48 432 more shading units
Front view of GeForce GT 330M Mac

Reasons to consider the
Nvidia GeForce GT 330M Mac

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Slightly lower TDP 23W vs 35W Around 35% lower TDP

Features Key features of the Radeon HD 6750M Mac  vs GeForce GT 330M Mac 

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

Radeon HD 6750M Mac
4.78 GPixel/s
GeForce GT 330M Mac
4 GPixel/s

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

Radeon HD 6750M Mac
14.35 GTexel/s
GeForce GT 330M Mac
8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6750M Mac
574.1 GFLOPS
GeForce GT 330M Mac
105.6 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 6750M Mac  vs
GeForce GT 330M Mac 
GPU brand AMD Nvidia
GPU name Whistler GT216
Market Laptop Laptop
Clock speed 598 MHz 500 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 480 48
Texture mapping units 24 16
Render output processors 8 8
Pixel rate 4.78 GPixel/s 4 GPixel/s
Texture rate 14.35 GTexel/s 8 GTexel/s
Floating-point performance 574.1 GFLOPS 105.6 GFLOPS

memory

Radeon HD 6750M Mac  vs
GeForce GT 330M Mac 
Memory clock speed 794 MHz 790 MHz
Effective memory clock speed 3,176 MHz 1,580 MHz
Memory bus 128 bit 128 bit
Memory 512 MB 512 MB
Memory type GDDR5 GDDR3
Memory bandwidth 50.8 GB/s 25.28 GB/s

noise and power

TDP 35W 23W

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