Radeon R9 M270 and Radeon HD 7490M - video card comparison
Radeon R9 M270
Radeon HD 7490M
Architecture
GCN (2011−2017)
Terascale 2 (2009−2015)
GPU code name
-
Seymour XTX
Market segment
Laptop
Laptop
Release date
April 2014
December 2011
Interface
-
PCIe 2.0 x16
Core clock speed
725 MHz
800 MHz
Floating-point performance
-
256.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1500 Million
370 million
Pipelines / CUDA cores
640
160
Power consumption (TDP)
-
9 Watt
Texture fill rate
-
6.400
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
512 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4500 MHz
3800 MHz
Memory bandwidth
-
30.4 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
DirectX
12 (FL 11_1)
11.2 (11_0)
OpenCL
-
1.2
OpenGL
-
4.4
Shader Model
-
5.0
Vulkan
-
N/A