Radeon HD 7990 and Radeon RX 580 XTR - video card comparison
Radeon HD 7990
Radeon RX 580 XTR
Architecture
GCN 1.0 (2012−2020)
GCN 4.0 (2016−2020)
GPU code name
Malta
Polaris 20
Market segment
Desktop
Desktop
Release date
April 2013
April 2017
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
1x 8-pin
Boost clock speed
1000 MHz
1340 MHz
Core clock speed
950 MHz
1257 MHz
Floating-point performance
2x 4,096 gflops
6,175 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
4,313 million
5,700 million
Pipelines / CUDA cores
2048
2304
Power consumption (TDP)
375 Watt
185 Watt
Texture fill rate
128.0
193.0
Memory type
GDDR5
GDDR5
Maximum RAM amount
3 GB
8 GB
Memory bus width
384 Bit
256 Bit
Memory clock speed
6000 MHz
8000 MHz
Memory bandwidth
288.0 GB/s
256.0 GB/s
Display Connectors
1x DVI, 4x mini-DisplayPort
1x HDMI, 3x DisplayPort
HDMI
-
+
DirectX
12 (11_1)
12.0 (12_0)
OpenCL
1.2
-
OpenGL
4.6
4.5
Shader Model
5.1
-
Vulkan
1.2.131
-