Quadro K620 and Radeon RX 640 OEM - video card comparison
Quadro K620
Radeon RX 640 OEM
Architecture
Maxwell (2014−2018)
GCN 4.0 (2016−2020)
GPU code name
GM107
Polaris 23
Market segment
Workstation
Desktop
Release date
July 2014
April 2020
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
None
None
Boost clock speed
1124 MHz
-
Core clock speed
1058 MHz
1295 MHz
Floating-point performance
863.2 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
1,870 million
2,200 million
Pipelines / CUDA cores
384
640
Power consumption (TDP)
41 Watt
50 Watt
Texture fill rate
26.98
51.80
Memory type
128 Bit
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1800 MHz
6 GB/s
Memory bandwidth
Up to 29 GB/s
96 GB/s
Display Connectors
DVI-I DP
1x DisplayPort 1.4a, 2x mini-DisplayPort 1.4a
Number of simultaneous displays
4
-
DirectX
12
12 (12_0)
CUDA
5.0
-
OpenCL
1.2
2.1
OpenGL
4.5
4.6
Shader Model
5
6.7 (6.4)
Vulkan
+
1.3
3D Vision Pro
+
-
Mosaic
+
-
nView Desktop Management
+
-