Radeon RX 580 and GeForce GTX 645 OEM - video card comparison
Radeon RX 580
GeForce GTX 645 OEM
Architecture
Polaris (2016−2019)
Kepler (2012−2018)
GPU code name
Polaris 20
GK106
Market segment
Desktop
Desktop
Release date
April 2017
April 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 8-pin
None
Boost clock speed
1340 MHz
-
Core clock speed
1257 MHz
824 MHz
Floating-point performance
6,175 gflops
949.2 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
5,700 million
2,540 million
Pipelines / CUDA cores
2304
576
Power consumption (TDP)
185 Watt
65 Watt
Texture fill rate
193.0
39.55
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
8000 MHz
4000 MHz
Memory bandwidth
256.0 GB/s
64 GB/s
Display Connectors
1x HDMI, 3x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
12 (11_0)
CUDA
-
3.0
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.4
5.1
Vulkan
1.2.131
1.1.126