Radeon R5 340X OEM and GeForce GTX 645 OEM - video card comparison
Radeon R5 340X OEM
GeForce GTX 645 OEM
Architecture
GCN 1.0 (2012−2020)
Kepler (2012−2018)
GPU code name
Oland
GK106
Market segment
Desktop
Desktop
Release date
May 2015
April 2013
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
None
Boost clock speed
1050 MHz
-
Core clock speed
900 MHz
824 MHz
Floating-point performance
806.4 gflops
949.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
950 million
2,540 million
Pipelines / CUDA cores
384
576
Power consumption (TDP)
65 Watt
65 Watt
Texture fill rate
21.60
39.55
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
4000 MHz
Memory bandwidth
16 GB/s
64 GB/s
Display Connectors
1x DVI, 1x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (11_1)
12 (11_0)
CUDA
-
3.0
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2.131
1.1.126