Radeon R9 255 OEM and GeForce GT 630 Rev. 2 - video card comparison
Radeon R9 255 OEM
GeForce GT 630 Rev. 2
Architecture
GCN 1.0 (2012−2020)
Kepler 2.0 (2013−2015)
GPU code name
Cape Verde
GK208
Market segment
Desktop
Desktop
Release date
December 2013
May 2013
Interface
PCIe 3.0 x16
PCIe 2.0 x8
Supplementary power connectors
1x 6-pin
None
Boost clock speed
930 MHz
-
Core clock speed
900 MHz
902 MHz
Floating-point performance
952.3 gflops
692.7 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,500 million
915 million
Pipelines / CUDA cores
512
384
Power consumption (TDP)
65 Watt
25 Watt
Texture fill rate
29.76
28.86
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4600 MHz
1800 MHz
Memory bandwidth
73.6 GB/s
14.4 GB/s
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
12 (11_1)
12 (11_0)
CUDA
-
3.5
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.1.126