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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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Lower TDP 75W vs 100W 25% lower TDP
Front view of Quadro M4000M

Reasons to consider the
Nvidia Quadro M4000M

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Significantly higher clock speed 975 MHz vs 680 MHz Around 45% higher clock speed
More memory 4,096 MB vs 2,048 MB 2x more memory
Significantly higher pixel rate 62.4 GPixel/s vs 21.76 GPixel/s More than 2.8x higher pixel rate
Better floating-point performance 2,496 GFLOPS vs 1,305.6 GFLOPS More than 90% better floating-point performance
Higher effective memory clock speed 5,012 MHz vs 3,600 MHz Around 40% higher effective memory clock speed
Higher memory bandwidth 160.4 GB/s vs 115.2 GB/s Around 40% higher memory bandwidth
Significantly more render output processors 64 vs 32 Twice as many render output processors
Higher texture rate 78 GTexel/s vs 32.6 GTexel/s Around 2.5x higher texture rate
More texture mapping units 80 vs 48 32 more texture mapping units
Significantly higher memory clock speed 1,253 MHz vs 900 MHz Around 40% higher memory clock speed
More shading units 1,280 vs 960 320 more shading units

Features Key features of the Radeon HD 6970M Mac  vs Quadro M4000M 

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

Radeon HD 6970M Mac
115.2 GB/s
Quadro M4000M
160.4 GB/s

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

Radeon HD 6970M Mac
21.76 GPixel/s
Quadro M4000M
62.4 GPixel/s

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

Radeon HD 6970M Mac
32.6 GTexel/s
Quadro M4000M
78 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6970M Mac
1,305.6 GFLOPS
Quadro M4000M
2,496 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


Radeon HD 6970M Mac  vs
Quadro M4000M 
GPU brand AMD Nvidia
GPU name Blackcomb GM204
Market Laptop Laptop
Clock speed 680 MHz 975 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 960 1,280
Texture mapping units 48 80
Render output processors 32 64
Pixel rate 21.76 GPixel/s 62.4 GPixel/s
Texture rate 32.6 GTexel/s 78 GTexel/s
Floating-point performance 1,305.6 GFLOPS 2,496 GFLOPS


Radeon HD 6970M Mac  vs
Quadro M4000M 
Memory clock speed 900 MHz 1,253 MHz
Effective memory clock speed 3,600 MHz 5,012 MHz
Memory bus 256 bit 256 bit
Memory 2,048 MB 4,096 MB
Memory type GDDR5 GDDR5
Memory bandwidth 115.2 GB/s 160.4 GB/s

noise and power

TDP 75W 100W


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