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Differences What are the advantages of each

Front view of Radeon R7 M265

Reasons to consider the
AMD Radeon R7 M265

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More memory 2,048 MB vs 512 MB 4x more memory
Front view of Radeon HD 6770M Mac

Reasons to consider the
AMD Radeon HD 6770M Mac

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Higher effective memory clock speed 3,600 MHz vs 1,800 MHz 2x higher effective memory clock speed
Higher memory bandwidth 57.6 GB/s vs 28.8 GB/s 2x higher memory bandwidth

Features Key features of the Radeon R7 M265  vs HD 6770M Mac 

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

Radeon R7 M265
28.8 GB/s

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

Radeon R7 M265
6.6 GPixel/s
Radeon HD 6770M Mac
5.8 GPixel/s

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

Radeon R7 M265
19.8 GTexel/s
Radeon HD 6770M Mac
17.4 GTexel/s

floating point performance How fast the gpu can crunch numbers

Radeon R7 M265
633.6 GFLOPS
Radeon HD 6770M Mac

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 R7 M265  vs
HD 6770M Mac 
GPU name Opal Whistler
Market Laptop Laptop
Clock speed 725 MHz 725 MHz
Is dual GPU No No
Reference card None None

raw performance

Shading units 384 480
Texture mapping units 24 24
Render output processors 8 8
Compute units 6 6
Pixel rate 6.6 GPixel/s 5.8 GPixel/s
Texture rate 19.8 GTexel/s 17.4 GTexel/s
Floating-point performance 633.6 GFLOPS 696 GFLOPS


Radeon R7 M265  vs
HD 6770M Mac 
Memory clock speed 900 MHz 900 MHz
Effective memory clock speed 1,800 MHz 3,600 MHz
Memory bus 128 bit 128 bit
Memory 2,048 MB 512 MB
Memory type DDR3 GDDR5
Memory bandwidth 28.8 GB/s 57.6 GB/s


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