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AMD Radeon HD 6770M Mac Edition

Graphics Processor
Whistler
Cores
480
TMUs
24
ROPs
8
Memory Size
1024 MB
Memory Type
GDDR5
Bus Width
128 bit
GPU Chip
GPU
The Radeon HD 6770M Mac Edition was a mobile graphics chip by AMD, launched on January 28th, 2011. Built on the 40 nm process, and based on the Whistler graphics processor, in its Whistler XT Mac variant, the chip supports DirectX 11.2. The Whistler graphics processor is an average sized chip with a die area of 118 mm² and 716 million transistors. It features 480 shading units, 24 texture mapping units, and 8 ROPs. AMD has paired 1,024 MB GDDR5 memory with the Radeon HD 6770M Mac Edition, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 675 MHz, memory is running at 794 MHz (3.2 Gbps effective).
Being a mxm module card, its power draw is rated at 35 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it. Rather it is intended for use in laptop/notebooks and will use the output of the host mobile device.

Graphics Processor

GPU Name
Whistler
GPU Variant
Whistler XT Mac
(216-0810084)
Architecture
TeraScale 2
Foundry
TSMC
Process Size
40 nm
Transistors
716 million
Density
6.1M / mm²
Die Size
118 mm²
Chip Package
FCBGA-962/1336

Mobile Graphics

Release Date
Jan 28th, 2011
Generation
Vancouver
(HD 6700M)
Predecessor
Manhattan
Successor
London
Production
End-of-life
Bus Interface
MXM-A (3.0)

Relative Performance

GeForce RTX 5090
7983%
GeForce RTX 4090
6089%
GeForce RTX 5080
5261%
GeForce RTX 4080 SUPER
4697%
GeForce RTX 4080
4657%
Radeon RX 7900 XTX
4655%
GeForce RTX 5070 Ti
4588%
Radeon RX 9070 XT
4383%
Radeon RX 7900 XT
4008%
GeForce RTX 3090 Ti
3935%
GeForce RTX 4070 Ti SUPER
3931%
Radeon RX 9070
3927%
GeForce RTX 4070 Ti
3598%
GeForce RTX 5070
3562%
GeForce RTX 3090
3510%
GeForce RTX 3080 Ti
3463%
GeForce RTX 4070 SUPER
3353%
Radeon RX 7900 GRE
3301%
Radeon RX 6950 XT
3247%
GeForce RTX 4070
3202%
Radeon RX 6900 XT
3170%
GeForce RTX 3080
3120%
Radeon RX 7800 XT
3111%
Radeon RX 6800 XT
3001%
GeForce RTX 5060 Ti 16 GB
2785%
GeForce RTX 5060 Ti 8 GB
2768%
Radeon RX 7700 XT
2727%
Radeon RX 9060 XT 16 GB
2644%
GeForce RTX 3070 Ti
2639%
Radeon RX 6800
2551%
Radeon RX 9060 XT 8 GB
2496%
GeForce RTX 3070
2469%
GeForce RTX 2080 Ti
2448%
GeForce RTX 4060 Ti 8 GB
2437%
GeForce RTX 5060
2399%
Radeon RX 6750 XT
2341%
GeForce RTX 3060 Ti
2161%
Radeon RX 6700 XT
2123%
GeForce RTX 2080 SUPER
1972%
Radeon RX 7600 XT
1955%
GeForce RTX 4060
1950%
Arc B580
1946%
GeForce RTX 5050
1896%
GeForce RTX 2080
1881%
Radeon RX 6650 XT
1840%
Radeon RX 7600
1837%
GeForce RTX 2070 SUPER
1749%
GeForce GTX 1080 Ti
1730%
Arc A770
1728%
GeForce RTX 3060 12 GB
1666%
Radeon RX 6600 XT
1642%
Radeon VII
1637%
Arc A750
1605%
Radeon RX 5700 XT
1568%
GeForce RTX 2070
1546%
Radeon RX 6600
1476%
Arc A580
1434%
GeForce RTX 2060 SUPER
1432%
Radeon RX Vega 64
1371%
GeForce RTX 2060
1327%
Radeon RX 5700
1321%
GeForce GTX 1080
1296%
GeForce GTX 1070 Ti
1271%
Radeon RX 5600 XT
1260%
Radeon RX Vega 56
1197%
GeForce GTX 1070
1154%
GeForce GTX 1660 SUPER
1092%
GeForce GTX 1660 Ti
1091%
GeForce GTX 980 Ti
1034%
GeForce RTX 3050 8 GB
1028%
Radeon R9 FURY X
1017%
GeForce GTX 1660
1005%
Radeon RX 590
949%
Radeon R9 FURY
925%
GeForce GTX 980
914%
GeForce GTX 1650 SUPER
905%
Radeon RX 6500 XT
893%
Radeon RX 5500 XT
886%
Radeon RX 580
879%
GeForce GTX 1060 6 GB
856%
Radeon R9 390X
844%
GeForce GTX 690
834%
Radeon RX 480
827%
Radeon HD 7990
823%
GeForce GTX 780 Ti
808%
GeForce GTX 970
787%
Radeon R9 290X
785%
Radeon R9 390
772%
Radeon RX 570
763%
Radeon R9 290
724%
Radeon RX 470
714%
GeForce GTX 1650
672%
Radeon RX 6400
659%
Arc A380
650%
GeForce GTX 780
649%
Radeon HD 7970 GHz Edition
586%
GeForce GTX 590
585%
Radeon R9 280X
577%
Radeon HD 6990
564%
GeForce GTX 1050 Ti
537%
GeForce GTX 680
525%
Radeon R9 380
519%
Radeon HD 7970
519%
GeForce GTX 770
518%
Radeon R9 285
514%
GeForce GTX 960
498%
GeForce GTX 670
486%
Radeon HD 5970
439%
GeForce GTX 1630
438%
Radeon HD 7950
430%
GeForce GTX 1050
429%
GeForce GTX 760
426%
GeForce GTX 580
426%
GeForce GTX 660 Ti
424%
Radeon R9 270X
419%
Radeon HD 7870 GHz Edition
409%
GeForce GTX 950
405%
Radeon RX 560
382%
GeForce GTX 570
376%
GeForce GTX 660
374%
Radeon RX 460
373%
Radeon R7 370
373%
Radeon HD 6970
360%
GeForce GTX 480
344%
Radeon HD 7850
338%
GeForce GTX 295
332%
Radeon HD 6950
321%
GeForce GTX 750 Ti
319%
Radeon HD 4870 X2
313%
GeForce GTX 560 Ti
312%
Radeon HD 5870
302%
Radeon HD 6870
283%
GeForce GTX 470
273%
GeForce GTX 650 Ti
262%
Radeon HD 5850
257%
GeForce GTX 285
240%
Radeon HD 6850
235%
GeForce GTX 280
220%
Radeon HD 7770 GHz Edition
219%
GeForce GTX 275
219%
GeForce GT 1030
217%
GeForce GTX 460
213%
Radeon HD 4890
205%
Radeon HD 6790
202%
Radeon HD 5830
192%
GeForce GTX 650
182%
GeForce GTX 550 Ti
180%
Radeon HD 4870
178%
GeForce GTX 260
176%
Radeon HD 5770
173%
Radeon HD 7750
171%
Radeon HD 5750
150%
GeForce GTS 450
145%
GeForce GTS 250
141%
Radeon HD 4850
138%
Radeon HD 4770
131%
Radeon HD 4830
122%
Radeon HD 6670
119%
GeForce 9800 GT
114%
GeForce GT 640
110%
Radeon HD 5670
103%
Radeon HD 6770M Mac Edition
100%
GeForce 9600 GT
97%
GeForce GT 240
84%
GeForce GT 440
82%
Radeon HD 4670
78%
Radeon HD 5570
72%
GeForce GT 430
71%
GeForce GT 220
54%
GeForce GT 520
44%
Radeon HD 6450
42%
Radeon HD 5450
36%
Radeon HD 4550
28%
GeForce 9400 GT
23%
GeForce 210
18%
Based on TPU review data: "Performance Summary" at 1920x1080, 4K for RTX 3080 and faster.
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
675 MHz
Memory Clock
794 MHz
3.2 Gbps effective

Memory

Memory Size
1024 MB
Memory Type
GDDR5
Memory Bus
128 bit
Bandwidth
50.82 GB/s

Render Config

Shading Units
480
TMUs
24
ROPs
8
Compute Units
6
L1 Cache
8 KB (per CU)
L2 Cache
256 KB

Theoretical Performance

Pixel Rate
5.400 GPixel/s
Texture Rate
16.20 GTexel/s
FP32 (float)
648.0 GFLOPS

Board Design

Slot Width
MXM Module
TDP
35 W
Outputs
Portable Device Dependent

Graphics Features

DirectX
11.2 (11_0)
OpenGL
4.4
OpenCL
1.2
Vulkan
N/A
Shader Model
5.0

Whistler GPU Notes

Generation: Northern Islands
Desktop Variant: Turks
Mobile Variant: Thames
Graphics/Compute: GFX4
Display Core Engine: 5.0
Unified Video Decoder: 3.1

Devices based on this design (2)

Name GPU Clock Memory Clock Other Changes
675 MHz 794 MHz
725 MHz 900 MHz 512 MB
Jul 31st, 2025 16:43 CDT change timezone

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