Radeon R9 390 X2 and Radeon RX 460 1024SP - video card comparison
Radeon R9 390 X2
Radeon RX 460 1024SP
Architecture
GCN 2.0 (2013−2017)
GCN 4.0 (2016−2020)
GPU code name
Grenada
Baffin
Market segment
Desktop
Desktop
Release date
September 2015
January 2017
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
4x 8-pin
None
Boost clock speed
-
1200 MHz
Core clock speed
1000 MHz
1090 MHz
Floating-point performance
2x 5,120 gflops
2,458 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
6,200 million
3,000 million
Pipelines / CUDA cores
2560
1024
Power consumption (TDP)
580 Watt
75 Watt
Texture fill rate
160.0
76.80
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
2 GB
Memory bus width
512 Bit
128 Bit
Memory clock speed
5400 MHz
7000 MHz
Memory bandwidth
345.6 GB/s
112.0 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.3
6.4
Vulkan
1.2.131
1.2.131