Radeon HD 6770M Mac 

Released January, 2011
  • 725 MHz
  • 512 MB GDDR5

Features Key features of the Radeon HD 6770M Mac

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

Radeon HD 6770M Mac
57.6 GB/s
GeForce GTX 880M
160 GB/s
GeForce GT 755M
86.4 GB/s

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

Radeon HD 6770M Mac
5.8 GPixel/s
GeForce GTX 880M
30.53 GPixel/s
GeForce GT 755M
15.7 GPixel/s

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

Radeon HD 6770M Mac
17.4 GTexel/s
GeForce GTX 880M
122.1 GTexel/s
GeForce GT 755M
31.36 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon HD 6770M Mac
GeForce GTX 880M
2,930.7 GFLOPS
GeForce GT 755M
752.6 GFLOPS

shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading

Radeon HD 6770M Mac

texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes

Radeon HD 6770M Mac

Specifications Full list of technical specs


GPU brand AMD
GPU name Whistler
Market Laptop
Clock speed 725 MHz
Is dual GPU No
Reference card None

raw performance

Shading units 480
Texture mapping units 24
Render output processors 8
Compute units 6
Pixel rate 5.8 GPixel/s
Texture rate 17.4 GTexel/s
Floating-point performance 696 GFLOPS


Memory clock speed 900 MHz
Effective memory clock speed 3,600 MHz
Memory bus 128 bit
Memory 512 MB
Memory type GDDR5
Memory bandwidth 57.6 GB/s

noise and power

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FYI for anyone having trouble installing the drivers directly from AMD...I'm using Windows 10, the regular installer doesn't automatically detect you have the correct video card for the Catalyst drivers...and their auto-detect utility doesn't work either...you need to go to your Device Manager and update the drivers from there, browse to the folder where the installer extracted (usually C:\AMD\AMD-Catalyst-15.7.1-Win10-64bit or similar)
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