Radeon R9 390 X2 and GeForce 800A - video card comparison
Radeon R9 390 X2
GeForce 800A
Architecture
GCN 2.0 (2013−2017)
Fermi 2.0 (2010−2014)
GPU code name
Grenada
GF119
Market segment
Desktop
Desktop
Release date
September 2015
March 2014
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
4x 8-pin
-
Core clock speed
1000 MHz
475 MHz
Floating-point performance
2x 5,120 gflops
141.7 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
6,200 million
292 million
Pipelines / CUDA cores
2560
48
Power consumption (TDP)
580 Watt
15 Watt
Texture fill rate
160.0
3.800
Memory type
GDDR5
DDR3
Maximum RAM amount
8 GB
1 GB
Memory bus width
512 Bit
64 Bit
Memory clock speed
5400 MHz
1800 MHz
Memory bandwidth
345.6 GB/s
14.4 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (12_0)
12 (11_0)
CUDA
-
2.1
OpenCL
2.0
1.1
OpenGL
4.6
4.6
Shader Model
6.3
5.1
Vulkan
1.2.131
N/A