Radeon R9 390 and Quadro K620 - video card comparison
Passmark - benchmark score Radeon R9 390 vs Quadro K620
Radeon R9 390
9182
Quadro K620
2297
Radeon R9 390
Quadro K620
Architecture
GCN 2.0 (2013−2017)
Maxwell (2014−2018)
GPU code name
Grenada
GM107
Market segment
Desktop
Workstation
Release date
June 2015
July 2014
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
None
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
1124 MHz
Core clock speed
-
1058 MHz
Floating-point performance
5,120 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
1,870 million
Pipelines / CUDA cores
2560
384
Power consumption (TDP)
275 Watt
41 Watt
Texture fill rate
160.0
26.98
Memory type
GDDR5
128 Bit
Maximum RAM amount
0 MB
2 GB
Memory bus width
512 Bit
128 Bit
Memory clock speed
1000 MHz
1800 MHz
Memory bandwidth
384 GB/s
Up to 29 GB/s
High bandwidth memory (HBM)
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
DVI-I DP
Number of simultaneous displays
-
4
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
12
CUDA
-
5.0
Mantle
+
-
OpenCL
2.0
1.2
OpenGL
4.6
4.5
Shader Model
6.3
5
Vulkan
+
+
3D Vision Pro
-
+
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
Mosaic
-
+
nView Desktop Management
-
+
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-