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AMD Radeon HD 6870M

Granville
Graphics Processor
800
Cores
40
TMUs
16
ROPs
1024 MB
Memory Size
GDDR5
Memory Type
128 bit
Bus Width
AMD Radeon HD 6870M Photo AMD Granville Photo
The Radeon HD 6870M was a graphics card by AMD, launched in January 2011. Built on the 40 nm process, and based on the Granville graphics processor, in its Granville XT variant, the card supports DirectX 11.2. The Granville graphics processor is an average sized chip with a die area of 166 mm² and 1,040 million transistors. It features 800 shading units, 40 texture mapping units and 16 ROPs. AMD has placed 1,024 MB GDDR5 memory on the card, which are connected using a 128-bit memory interface. The GPU is operating at a frequency of 675 MHz, memory is running at 1000 MHz.
Being a mxm module card, its power draw is rated at 50 W maximum. This device has no display connectivity, as it is not designed to have monitors connected to it.

Graphics Processor

GPU Name
Granville
GPU Variant
Granville XT
(216-0769024)
Architecture
TeraScale 2
Foundry
TSMC
Process Size
40 nm
Transistors
1,040 million
Die Size
166 mm²

Graphics Card

Release Date
Jan 4th, 2011
Generation
Vancouver
(HD 6800M)
Production
End-of-life
Bus Interface
MXM-B (3.0)

Relative Performance

13%
16%
20%
26%
30%
32%
40%
52%
52%
57%
60%
61%
71%
75%
80%
83%
86%
89%
95%
100%
Radeon HD 6870M
100%
103%
106%
109%
125%
126%
128%
130%
130%
131%
133%
140%
147%
150%
155%
157%
158%
160%
160%
160%
164%
171%
175%
188%
191%
191%
199%
199%
207%
221%
227%
229%
233%
234%
242%
245%
247%
251%
263%
268%
272%
272%
273%
274%
296%
298%
306%
309%
311%
313%
314%
320%
320%
329%
354%
364%
373%
375%
379%
383%
392%
402%
411%
421%
427%
427%
473%
521%
528%
563%
566%
574%
582%
587%
589%
598%
600%
603%
608%
641%
654%
663%
663%
729%
742%
754%
811%
890%
922%
993%
993%
1048%
1169%
1226%
1257%
1370%
1559%
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
675 MHz
Memory Clock
1000 MHz
4000 MHz effective

Memory

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

Render Config

Shading Units
800
TMUs
40
ROPs
16
Compute Units
10

Theoretical Performance

Pixel Rate
10.80 GPixel/s
Texture Rate
27.00 GTexel/s
FP32 (float) performance
1,080 GFLOPS

Board Design

Slot Width
MXM Module
TDP
50 W
Outputs
No outputs

Graphics Features

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

Granville GPU Notes

Chip Variant: Juniper
Graphics/Compute: GFX4
Display Core Engine: 4.0
Unified Video Decoder: 2.3