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AMD Radeon HD 6990M

Blackcomb
Graphics Processor
1120
Cores
56
TMUs
32
ROPs
2 GB
Memory Size
GDDR5
Memory Type
256 bit
Bus Width
AMD Radeon HD 6990M Photo AMD Blackcomb Photo
The Radeon HD 6990M was a graphics card by AMD, launched in July 2011. Built on the 40 nm process, and based on the Blackcomb graphics processor, in its Blackcomb XTX 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. It features 1120 shading units, 56 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 715 MHz, memory is running at 900 MHz.
Being a mxm module card, the AMD Radeon HD 6990M does not require any additional power connector, its power draw is rated at 100 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 XTX
(216-0811030)
Architecture
TeraScale 2
Foundry
TSMC
Process Size
40 nm
Transistors
1,700 million
Die Size
212 mm²

Graphics Card

Release Date
Jul 12th, 2011
Generation
Vancouver
(HD 6900M)
Production
End-of-life
Bus Interface
MXM-B (3.0)

Relative Performance

8%
10%
12%
16%
19%
20%
24%
32%
32%
35%
37%
37%
43%
46%
49%
51%
53%
54%
58%
61%
63%
64%
67%
76%
77%
78%
79%
79%
80%
81%
85%
90%
91%
95%
95%
96%
97%
98%
98%
100%
100%
Radeon HD 6990M
104%
106%
114%
116%
116%
121%
121%
126%
134%
139%
139%
142%
143%
147%
149%
150%
153%
160%
163%
166%
166%
166%
167%
180%
182%
186%
188%
189%
191%
191%
195%
195%
200%
216%
221%
227%
228%
231%
233%
239%
245%
250%
256%
260%
260%
288%
317%
322%
343%
345%
350%
354%
357%
359%
364%
366%
367%
371%
390%
399%
404%
404%
444%
452%
459%
494%
542%
561%
605%
605%
638%
712%
746%
766%
834%
949%
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
715 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
1120
TMUs
56
ROPs
32
Compute Units
14

Theoretical Performance

Pixel Rate
22.88 GPixel/s
Texture Rate
40.04 GTexel/s
FP32 (float) performance
1,602 GFLOPS

Board Design

Slot Width
MXM Module
TDP
100 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

Card Notes

- Polygon throughput: 715M polygons/sec
- Data fetch rate (32-bit): 160 billion fetches/sec
- Anti-aliased pixel fill rate: 91.52 Gigasamples/sec

Blackcomb GPU Notes

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

Retail boards based on this design (2)

Name GPU Clock Memory Clock Other Changes
Dell HD 6990M 790 MHz 1000 MHz
Dell HD 6990M 800 MHz 1000 MHz