GeForce GTX 645 OEM and Radeon R7 M520 - video card comparison
GeForce GTX 645 OEM
Radeon R7 M520
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK106
Oland
Market segment
Desktop
Desktop
Release date
April 2013
April 2017
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
None
Core clock speed
824 MHz
1030 MHz
Floating-point performance
949.2 gflops
659.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
1,040 million
Pipelines / CUDA cores
576
320
Power consumption (TDP)
65 Watt
50 Watt
Texture fill rate
39.55
20.60
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
2 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
4000 MHz
2000 MHz
Memory bandwidth
64 GB/s
16 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DirectX
12 (11_0)
12.0
CUDA
3.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.0
Vulkan
1.1.126
-