Radeon HD 8970M and Maxwell GPU Surface Book (940M, GDDR5) - video card comparison
Radeon HD 8970M
Maxwell GPU Surface Book (940M, GDDR5)
Architecture
GCN (2011−2017)
Maxwell (2014−2018)
GPU code name
Neptune
Surface Book
Market segment
Laptop
Laptop
Release date
May 2013
October 2015
Interface
PCIe 3.0 x16
-
Boost clock speed
900 MHz
993 MHz
Core clock speed
850 MHz
954 MHz
Floating-point performance
2,304 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
-
Pipelines / CUDA cores
1280
384
Power consumption (TDP)
100 Watt
-
Texture fill rate
72.00
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
4800 MHz
5012 MHz
Memory bandwidth
153.6 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
-
DirectX
12 (11_1)
DirectX 12 (FL 11_0), Shader 5.0
CUDA
-
+
OpenCL
1.2
-
OpenGL
4.6
-
Shader Model
5.1
-
Vulkan
1.2.131
-
Optimus
-
+