Radeon HD 8790M and Radeon R9 M270 - video card comparison
Radeon HD 8790M
Radeon R9 M270
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Mars XTX
-
Market segment
Laptop
Laptop
Release date
November 2012
April 2014
Interface
MXM-A (3.0)
-
Supplementary power connectors
None
-
Boost clock speed
900 MHz
-
Core clock speed
850 MHz
725 MHz
Floating-point performance
691.2 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
950 million
1500 Million
Pipelines / CUDA cores
384
640
Power consumption (TDP)
unknown
-
Texture fill rate
21.60
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4500 MHz
4500 MHz
Memory bandwidth
64 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
-
DirectX
12 (11_1)
12 (FL 11_1)
OpenCL
1.2
-
OpenGL
4.6
-
Shader Model
5.1
-
Vulkan
1.2.131
-