Radeon HD 6950M and Mobility Radeon HD 3870 X2 - video card comparison
Radeon HD 6950M
Mobility Radeon HD 3870 X2
Architecture
Terascale 2 (2009−2015)
RV6xx (2007−2010)
GPU code name
Blackcomb Pro
M88-XT CF
Market segment
Laptop
Laptop
Release date
January 2011
September 2008
Interface
MXM-B (3.0)
PCIe 2.0 x16
Core clock speed
580 MHz
660 MHz
Floating-point performance
1,113.6 gflops
2x 422.4 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
1,700 million
666 million
Pipelines / CUDA cores
960
640
Power consumption (TDP)
50 Watt
110 Watt
Texture fill rate
27.84
10.56
Memory type
GDDR5
GDDR3
Maximum RAM amount
2 GB
512 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
900 MHz
850 MHz
Memory bandwidth
115.2 GB/s
54.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
10.1 (10_1)
OpenCL
1.2
N/A
OpenGL
4.4
3.3
Shader Model
5.0
4.1
Vulkan
N/A
N/A