Maxwell GPU Surface Book (940M, GDDR5) and Radeon HD 6950M - video card comparison
Maxwell GPU Surface Book (940M, GDDR5)
Radeon HD 6950M
Architecture
Maxwell (2014−2018)
Terascale 2 (2009−2015)
GPU code name
Surface Book
Blackcomb Pro
Market segment
Laptop
Laptop
Release date
October 2015
January 2011
Interface
-
MXM-B (3.0)
Boost clock speed
993 MHz
-
Core clock speed
954 MHz
580 MHz
Floating-point performance
-
1,113.6 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
-
1,700 million
Pipelines / CUDA cores
384
960
Power consumption (TDP)
-
50 Watt
Texture fill rate
-
27.84
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
64 Bit
256 Bit
Memory clock speed
5012 MHz
900 MHz
Memory bandwidth
-
115.2 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
DirectX
DirectX 12 (FL 11_0), Shader 5.0
11.2 (11_0)
CUDA
+
-
OpenCL
-
1.2
OpenGL
-
4.4
Shader Model
-
5.0
Vulkan
-
N/A
Optimus
+
-