Maxwell GPU Surface Book and Radeon HD 8790M - video card comparison
Maxwell GPU Surface Book
Radeon HD 8790M
Architecture
Maxwell (2014−2018)
GCN (2011−2017)
GPU code name
Surface Book
Mars XTX
Market segment
Laptop
Laptop
Release date
October 2015
November 2012
Interface
-
MXM-A (3.0)
Supplementary power connectors
-
None
Boost clock speed
993 MHz
900 MHz
Core clock speed
954 MHz
850 MHz
Floating-point performance
-
691.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
950 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
-
unknown
Texture fill rate
-
21.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
5012 MHz
4500 MHz
Memory bandwidth
-
64 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
DirectX
12 (FL 11_0)
12 (11_1)
CUDA
+
-
OpenCL
-
1.2
OpenGL
-
4.6
Shader Model
-
5.1
Vulkan
-
1.2.131
Optimus
+
-