Radeon R9 390 and Radeon RX 580G - video card comparison
Radeon R9 390
Radeon RX 580G
Architecture
GCN 2.0 (2013−2017)
GCN 4.0 (2016−2020)
GPU code name
Grenada
Polaris 20
Market segment
Desktop
Desktop
Release date
June 2015
October 2018
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
1x 8-pin
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
1330 MHz
Core clock speed
-
1257 MHz
Floating-point performance
5,120 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
6,200 million
5,700 million
Pipelines / CUDA cores
2560
2304
Power consumption (TDP)
275 Watt
185 Watt
Texture fill rate
160.0
191.5
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
8 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1000 MHz
8000 MHz
Memory bandwidth
384 GB/s
256.0 GB/s
High bandwidth memory (HBM)
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x HDMI, 3x DisplayPort
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
+
-
DirectX
DirectX® 12
12 (12_0)
Mantle
+
-
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.3
6.4
Vulkan
+
1.2.131
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-