AMD Radeon HD 6770M

AMD Radeon HD 6770M

The AMD Radeon HD 6770M (sometimes also called ATI Mobility Radeon HD 6770 or similar) is a fast middle class graphics card for laptops in 2011. It supports DirectX11, is the successor of the HD 5770, and features higher clock rates, 80 more shaders, Eyefinity+ and the new UVD3 video decoder. However, it is still produced in 40nm and based on the same Whistler chip as the entire 6700M and 6600M series. The chip is normally clocked at 725 MHz, but is only clocked at 675 MHz in the MacBook Pro 15 Late 2011 model.

The 480 Stream processors should still based on the "old" 5D architecture similar to the 5000 series. Therefore, the number of shaders is not comparable to the 1D cores of current Nvidia GPUs. The Tessellation performance, however, should be an improvement with the new cards. The Stream processors can be used with DirectX 11, OpenGL 4.1, DirectCompute 11 and OpenCL. The latter two APIs can exploit the GPU for general computations like transcoding videos.

The 3D performance of the 6770M is slightly better than the GeForce GT 555M and is therefore positioned in the upper middle class as of 2011. Demanding games like Anno 2070 or Skyrim can only be played in medium detail settings and lower resolutions. Certain games, such as Battlefield 3, may even only run in low detail settings. Older games like Call of Duty: Black Ops are playable with all settings maxed.

The new UVD3 video decoder supports the decoding of MPEG-4 AVC/H.264, VC-1, MPEG-2, Flash and now also Multi-View Codec (MVC) and MPEG-4 part 2 (DivX, xVid) HD videos on the graphics card.

Furthermore, the HD 6700M series integrates an HD audio controller to transmit HD Audio (TrueHD or DTS Master Audio) over HDMI and DisplayPort (e.g., for Blu-Ray videos).

The AMD HD3D Technology offers support for Blu-Ray 3D and 3D displays (integrated and external). However, the solution is not as mature as 3D Vision from Nvidia in terms of dirvers and overall support.

Thanks to Eyefinity, the AMD card is able to theoretically drive up to 5 monitors simultaneously. This would only work, however, if the laptop features enough DisplayPort outputs.

The power consumption of the 6770M should be similar to the Mobility Radeon HD 5770. As a result, the 6770M is normally only found in 15-inch or larger notebooks.

Radeon HD 6600M/6700M Series
Radeon HD 6770M 480 @ 675 / 725 MHz128 Bit @ 800 MHz
Radeon HD 6750M (compare) 480 @ 600 MHz128 Bit @ 900 MHz
Radeon HD 6730M (compare) 480 @ 725 MHz128 Bit @ 800 MHz
Radeon HD 6650M (compare) 480 @ 600 MHz128 Bit @ 900 MHz
Radeon HD 6630M (compare) 480 @ 485 MHz128 Bit @ 800 MHz
ArchitectureTerascale 2
Pipelines480 - unified
Core Speed675 / 725 MHz
Memory Speed800 MHz
Memory Bus Width128 Bit
Memory TypeGDDR5
Shared Memoryno
DirectXDirectX 11, Shader 5.0
Transistor Count716 Million
technology40 nm
Notebook Sizemedium sized
Date of Announcement04.01.2011
Link to Manufacturer Page


3DMark 11 - Performance 1280x720
min: 1347     avg: 1474.7     median: 1475 (4%)     max: 1561 points
3DMark 11 - Performance GPU 1280x720
min: 1271     avg: 1327.8     median: 1328 (3%)     max: 1379 points
3DMark Vantage
P Result 1280x1024 +
P GPU no PhysX 1280x1024 +
3DMark 2001SE - Standard 1024x768
47877 Points (50%)
3DMark 03 - Standard 1024x768
min: 19530     avg: 24324.5     median: 24012 (13%)     max: 29744 Points
3DMark 05 - Standard 1024x768
min: 9017     avg: 15484.2     median: 16773 (32%)     max: 19373 Points
3DMark 06 +
Unigine Heaven 2.1 - high, Tesselation (normal), DirectX11 1280x1024
16.5 fps (7%)
SPECviewperf 11
Siemens NX 1920x1080 +
Tcvis 1920x1080 +
SolidWorks 1920x1080 +
Pro/ENGINEER 1920x1080 +
Maya 1920x1080 +
Lightwave 1920x1080 +
Ensight 1920x1080 +
Catia 1920x1080 +
Windows 7 Experience Index - Gaming graphics
6.8 points (97%)
Windows 7 Experience Index - Graphics
6.8 points (97%)
Cinebench R10 Shading 32Bit +
Cinebench R11.5 OpenGL 64Bit +
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.

Star Wars: The Old Republic

Star Wars: The Old Republic

low 1024x768
69.2 fps  fps    + Compare
high 1366x768
39.8 fps  fps    + Compare
» With all tested laptops playable in detail settings high.
Anno 2070

Anno 2070

low 1024x768
95 fps 105 ~ 100 fps    + Compare
med. 1366x768
40 fps 42 ~ 41 fps    + Compare
high 1366x768
26.3 fps 27 ~ 27 fps    + Compare
ultra 1920x1080
13.5 fps 15 ~ 14 fps    + Compare
» With all tested laptops playable in detail settings med..
low 1280x720
59  fps    + Compare
med. 1366x768
39.8 fps 43 ~ 41 fps    + Compare
high 1366x768
29 30.4 fps ~ 30 fps    + Compare
ultra 1920x1080
15 15 fps ~ 15 fps    + Compare
» With all tested laptops playable in detail settings med..
low 1024x768
37.7 fps 39 ~ 38 fps    + Compare
med. 1366x768
26.7 fps 28 ~ 27 fps    + Compare
high 1366x768
21.1 fps 22 ~ 22 fps    + Compare
» With all tested laptops playable in detail settings low.
low 1024x768
77 fps  fps    + Compare
med. 1366x768
58 fps  fps    + Compare
high 1366x768
18 fps  fps    + Compare
ultra 1920x1080
fps  fps    + Compare
» With all tested laptops playable in detail settings med..
Fifa 12

Fifa 12

low 800x600
297.1 fps  fps    + Compare
med. 1024x768
150.8 fps  fps    + Compare