Radeon R9 390 X2 and Radeon R9 290 - video card comparison
Radeon R9 390 X2
Radeon R9 290
Architecture
GCN 2.0 (2013−2017)
GCN 2.0 (2013−2017)
GPU code name
Grenada
Hawaii
Market segment
Desktop
Desktop
Release date
September 2015
November 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
4x 8-pin
1x 6-pin + 1x 8-pin
Core clock speed
1000 MHz
947 MHz
Floating-point performance
2x 5,120 gflops
4,849 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
6,200 million
Pipelines / CUDA cores
2560
2560
Power consumption (TDP)
580 Watt
275 Watt
Texture fill rate
160.0
151.5
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
4 GB
Memory bus width
512 Bit
512 Bit
Memory clock speed
5400 MHz
5000 MHz
Memory bandwidth
345.6 GB/s
320.0 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x 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
6.3
Vulkan
1.2.131
1.2.131