GeForce 945A and Radeon R9 255 OEM - video card comparison
GeForce 945A
Radeon R9 255 OEM
Architecture
Maxwell (2014−2018)
GCN 1.0 (2012−2020)
GPU code name
GM108
Cape Verde
Market segment
Desktop
Desktop
Release date
March 2015
December 2013
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
-
1x 6-pin
Boost clock speed
1189 MHz
930 MHz
Core clock speed
1072 MHz
900 MHz
Floating-point performance
903.2 gflops
952.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
1,500 million
Pipelines / CUDA cores
384
512
Power consumption (TDP)
33 Watt
65 Watt
Texture fill rate
28.54
29.76
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
5012 MHz
4600 MHz
Memory bandwidth
40.1 GB/s
73.6 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (11_1)
CUDA
5.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.2.131