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Differences What are the advantages of each

Front view of Radeon R9 M380

Reasons to consider the
AMD Radeon R9 M380

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Higher clock speed 900 MHz vs 680 MHz More than 30% higher clock speed
More memory 4,096 MB vs 2,048 MB 2x more memory
Higher effective memory clock speed 6,000 MHz vs 3,600 MHz More than 65% higher effective memory clock speed
Much higher memory clock speed 1,500 MHz vs 900 MHz More than 65% higher memory clock speed
Slightly higher texture rate 48 GTexel/s vs 32.6 GTexel/s More than 45% higher texture rate
Front view of Radeon HD 6970M Mac

Reasons to consider the
AMD Radeon HD 6970M Mac

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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
Slightly higher memory bandwidth 115.2 GB/s vs 96 GB/s More than 20% higher memory bandwidth
Slightly more shading units 960 vs 768 192 more shading units

Features Key features of the Radeon R9 M380  vs HD 6970M Mac 

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

Radeon R9 M380
96 GB/s
Radeon HD 6970M Mac
115.2 GB/s

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

Radeon R9 M380
16 GPixel/s
Radeon HD 6970M Mac
21.76 GPixel/s

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

Radeon R9 M380
48 GTexel/s
Radeon HD 6970M Mac
32.6 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R9 M380
1,536 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


Radeon R9 M380  vs
HD 6970M Mac 
GPU name Strato Blackcomb
Market Laptop Laptop
Clock speed 900 MHz 680 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 768 960
Texture mapping units 48 48
Render output processors 16 32
Compute units 12 12
Pixel rate 16 GPixel/s 21.76 GPixel/s
Texture rate 48 GTexel/s 32.6 GTexel/s
Floating-point performance 1,536 GFLOPS 1,305.6 GFLOPS


Radeon R9 M380  vs
HD 6970M Mac 
Memory clock speed 1,500 MHz 900 MHz
Effective memory clock speed 6,000 MHz 3,600 MHz
Memory bus 128 bit 256 bit
Memory 4,096 MB 2,048 MB
Memory type GDDR5 GDDR5
Memory bandwidth 96 GB/s 115.2 GB/s


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