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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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Slightly more shading units 480 vs 384 96 more shading units
Slightly lower TDP 35W vs 45W More than 20% lower TDP
Front view of GeForce GT 650M Mac

Reasons to consider the
Nvidia GeForce GT 650M Mac

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Significantly higher clock speed 900 MHz vs 598 MHz More than 50% higher clock speed
Higher effective memory clock speed 5,016 MHz vs 3,176 MHz Around 60% higher effective memory clock speed
Higher memory bandwidth 80.3 GB/s vs 50.8 GB/s Around 60% higher memory bandwidth
Significantly higher memory clock speed 1,254 MHz vs 794 MHz Around 60% higher memory clock speed
Slightly higher texture rate 28.8 GTexel/s vs 14.35 GTexel/s More than 2x higher texture rate
More render output processors 16 vs 8 Twice as many render output processors

Features Key features of the Radeon HD 6750M Mac  vs GeForce GT 650M 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 650M Mac
7.2 GPixel/s

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

Radeon HD 6750M Mac
14.35 GTexel/s
GeForce GT 650M Mac
28.8 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6750M Mac
574.1 GFLOPS
GeForce GT 650M Mac
691.2 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

Specifications Full list of technical specs

gpu

Radeon HD 6750M Mac  vs
GeForce GT 650M Mac 
GPU brand AMD Nvidia
GPU name Whistler GK107
Market Laptop Laptop
Clock speed 598 MHz 900 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 480 384
Texture mapping units 24 32
Render output processors 8 16
Pixel rate 4.78 GPixel/s 7.2 GPixel/s
Texture rate 14.35 GTexel/s 28.8 GTexel/s
Floating-point performance 574.1 GFLOPS 691.2 GFLOPS

memory

Radeon HD 6750M Mac  vs
GeForce GT 650M Mac 
Memory clock speed 794 MHz 1,254 MHz
Effective memory clock speed 3,176 MHz 5,016 MHz
Memory bus 128 bit 128 bit
Memory 512 MB 512 MB
Memory type GDDR5 GDDR5
Memory bandwidth 50.8 GB/s 80.3 GB/s

noise and power

TDP 35W 45W

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