Radeon R5 340X OEM and Radeon RX 640 - video card comparison
Radeon R5 340X OEM
Radeon RX 640
Architecture
GCN 1.0 (2012−2020)
Polaris (2016−2019)
GPU code name
Oland
Polaris 12
Market segment
Desktop
Laptop
Release date
May 2015
August 2019
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
1050 MHz
1218 MHz
Core clock speed
900 MHz
1218 MHz
Floating-point performance
806.4 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
950 million
2,200 million
Pipelines / CUDA cores
384
640
Power consumption (TDP)
65 Watt
50 Watt
Texture fill rate
21.60
38.98
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
2000 MHz
6000 MHz
Memory bandwidth
16 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.2.131
1.2.131
FreeSync
-
+