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Differences What are the advantages of each

Front view of Radeon HD 6970M Mac

Reasons to consider the
AMD Radeon HD 6970M Mac

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Higher memory bandwidth 115.2 GB/s vs 64 GB/s 80% higher memory bandwidth
Higher pixel rate 21.76 GPixel/s vs 7.53 GPixel/s Around 3x higher pixel rate
Better floating-point performance 1,305.6 GFLOPS vs 722.7 GFLOPS More than 80% better floating-point performance
More render output processors 32 vs 16 Twice as many render output processors
Significantly wider memory bus 256 bit vs 128 bit 2x wider memory bus
More shading units 960 vs 384 576 more shading units
More texture mapping units 48 vs 32 16 more texture mapping units
Front view of GeForce GT 750M

Reasons to consider the
Nvidia GeForce GT 750M

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Significantly higher clock speed 941 MHz vs 680 MHz Around 40% higher clock speed
Higher memory clock speed 1,000 MHz vs 900 MHz More than 10% higher memory clock speed
Lower TDP 50W vs 75W Around 35% lower TDP

Features Key features of the Radeon HD 6970M Mac  vs GeForce GT 750M 

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 6970M Mac
21.76 GPixel/s
GeForce GT 750M
7.53 GPixel/s

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

Radeon HD 6970M Mac
32.6 GTexel/s
GeForce GT 750M
30.11 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6970M Mac
1,305.6 GFLOPS
GeForce GT 750M
722.7 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

Radeon HD 6970M Mac  vs
GeForce GT 750M 
GPU brand AMD Nvidia
GPU name Blackcomb GK107
Market Laptop Laptop
Clock speed 680 MHz 941 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 960 384
Texture mapping units 48 32
Render output processors 32 16
Pixel rate 21.76 GPixel/s 7.53 GPixel/s
Texture rate 32.6 GTexel/s 30.11 GTexel/s
Floating-point performance 1,305.6 GFLOPS 722.7 GFLOPS

memory

Radeon HD 6970M Mac  vs
GeForce GT 750M 
Memory clock speed 900 MHz 1,000 MHz
Effective memory clock speed 3,600 MHz 4,000 MHz
Memory bus 256 bit 128 bit
Memory 2,048 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 115.2 GB/s 64 GB/s

noise and power

TDP 75W 50W

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