Radeon R9 255 OEM and GeForce GTX 950 OEM - video card comparison
Radeon R9 255 OEM
GeForce GTX 950 OEM
Architecture
GCN 1.0 (2012−2020)
Maxwell 2.0 (2015−2019)
GPU code name
Cape Verde
GM206S
Market segment
Desktop
Desktop
Release date
December 2013
2016
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
None
Boost clock speed
930 MHz
1203 MHz
Core clock speed
900 MHz
937 MHz
Floating-point performance
952.3 gflops
1,946 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
2,940 million
Pipelines / CUDA cores
512
1024
Power consumption (TDP)
65 Watt
-
Texture fill rate
29.76
76.99
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4600 MHz
5 GB/s
Memory bandwidth
73.6 GB/s
80.19 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 (12_1)
CUDA
-
5.2
OpenCL
1.2
3.0
OpenGL
4.6
4.6
Shader Model
5.1
6.7
Vulkan
1.2.131
1.3