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Differences What are the advantages of each

Front view of Radeon R9 M370X Mac

Reasons to consider the
AMD Radeon R9 M370X Mac

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Higher clock speed 775 MHz vs 680 MHz Around 15% higher clock speed
Higher effective memory clock speed 4,500 MHz vs 3,600 MHz 25% higher effective memory clock speed
Higher memory clock speed 1,125 MHz vs 900 MHz 25% higher memory clock speed
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 72 GB/s More than 60% higher memory bandwidth
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
Higher pixel rate 21.76 GPixel/s vs 12.8 GPixel/s 70% higher pixel rate
More shading units 960 vs 640 320 more shading units

Features Key features of the Radeon R9 M370X Mac  vs HD 6970M 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 R9 M370X Mac
12.8 GPixel/s
Radeon HD 6970M Mac
21.76 GPixel/s

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

Radeon R9 M370X Mac
32 GTexel/s
Radeon HD 6970M Mac
32.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 M370X Mac
1,024 GFLOPS
Radeon HD 6970M Mac
1,305.6 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 R9 M370X Mac  vs
HD 6970M Mac 
GPU brand AMD AMD
GPU name Tropo Blackcomb
Market Laptop Laptop
Clock speed 775 MHz 680 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 640 960
Texture mapping units 40 48
Render output processors 16 32
Compute units 10 12
Pixel rate 12.8 GPixel/s 21.76 GPixel/s
Texture rate 32 GTexel/s 32.6 GTexel/s
Floating-point performance 1,024 GFLOPS 1,305.6 GFLOPS

memory

Radeon R9 M370X Mac  vs
HD 6970M Mac 
Memory clock speed 1,125 MHz 900 MHz
Effective memory clock speed 4,500 MHz 3,600 MHz
Memory bus 128 bit 256 bit
Memory 2,048 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 72 GB/s 115.2 GB/s

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