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AMD Radeon HD 6970M Mac Edition

Blackcomb
Graphics Processor
960
Cores
48
TMUs
32
ROPs
2 GB
Memory Size
GDDR5
Memory Type
256 bit
Bus Width
AMD Radeon HD 6970M Mac Edition Photo AMD Blackcomb Photo
The Radeon HD 6970M Mac Edition was a graphics card by AMD, launched in August 2011. Built on the 40 nm process, and based on the Blackcomb graphics processor, in its Blackcomb XT variant, the card supports DirectX 11.2. The Blackcomb graphics processor is an average sized chip with a die area of 212 mm² and 1,700 million transistors. Unlike the fully unlocked Radeon HD 6990M, which uses the same GPU but has all 1120 shaders enabled, AMD has disabled some shading units on the Radeon HD 6970M Mac Edition to reach the product's target shader count. It features 960 shading units, 48 texture mapping units and 32 ROPs. AMD has placed 2,048 MB GDDR5 memory on the card, which are connected using a 256-bit memory interface. The GPU is operating at a frequency of 680 MHz, memory is running at 900 MHz.
Being a mxm module card, the AMD Radeon HD 6970M Mac Edition does not require any additional power connector, its power draw is rated at 75 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it.

Graphics Processor

GPU Name
Blackcomb
GPU Variant
Blackcomb XT
(216-0811000)
Architecture
TeraScale 2
Foundry
TSMC
Process Size
40 nm
Transistors
1,700 million
Die Size
212 mm²

Graphics Card

Release Date
Aug 25th, 2011
Generation
Vancouver
(HD 6900M)
Production
End-of-life
Bus Interface
MXM-B (3.0)

Relative Performance

9%
11%
13%
17%
20%
21%
26%
34%
35%
38%
40%
41%
47%
50%
53%
55%
57%
59%
63%
67%
68%
70%
73%
83%
84%
85%
86%
86%
87%
88%
93%
98%
100%
100%
Radeon HD 6970M Mac Edition
103%
104%
105%
106%
106%
107%
109%
114%
116%
125%
127%
127%
132%
133%
137%
147%
151%
152%
155%
156%
161%
163%
164%
167%
175%
178%
181%
181%
182%
182%
197%
198%
203%
206%
207%
208%
209%
212%
213%
219%
236%
242%
248%
249%
252%
254%
260%
267%
273%
280%
284%
284%
315%
346%
351%
374%
376%
382%
387%
390%
392%
397%
399%
401%
404%
426%
435%
441%
441%
485%
493%
501%
539%
592%
613%
660%
660%
696%
777%
815%
836%
911%
1036%
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
680 MHz
Memory Clock
900 MHz
3600 MHz effective

Memory

Memory Size
2 GB
Memory Type
GDDR5
Memory Bus
256 bit
Bandwidth
115.2 GB/s

Render Config

Shading Units
960
TMUs
48
ROPs
32
Compute Units
12

Theoretical Performance

Pixel Rate
21.76 GPixel/s
Texture Rate
32.64 GTexel/s
FP32 (float) performance
1,306 GFLOPS

Board Design

Slot Width
MXM Module
TDP
75 W
Outputs
No outputs
Power Connectors
None
Board Number
C296

Graphics Features

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

Blackcomb GPU Notes

Chip Variant: Barts
Graphics/Compute: GFX4
Display Core Engine: 5.0
Unified Video Decoder: 3.1