AMD Radeon RX 580X Mobile vs AMD Radeon R9 390X
GPU Specs Compare
Graphics Card
Release Date
Apr 2018
Jun 2015
Generation
Mobility Radeon
Pirate Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Base Clock
1000 MHz
-
Boost Clock
1077 MHz
-
Memory Clock
2000 MHz
1500 MHz
Memory
Memory Size
8GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
512bit
Bandwidth
256.0GB/s
384.0GB/s
Render Config
Compute Units
36
44
Shading Units
2304
2816
TMUs
144
176
ROPs
32
64
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
2 MB
1024 KB
Theoretical Performance
Pixel Rate
34.46 GPixel/s
67.20 GPixel/s
Texture Rate
155.1 GTexel/s
184.8 GTexel/s
FP16 (half)
4.963 TFLOPS
-
FP32 (float)
4.963 TFLOPS
5.914 TFLOPS
FP64 (double)
310.2 GFLOPS
739.2 GFLOPS
Graphics Processor
GPU Name
Polaris 20
Grenada
GPU Variant
Polaris 20M XT
Grenada XT(215-0880004)
Architecture
GCN 4.0
GCN 2.0
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
28 nm
Transistors
5.7 billion
6.2 billion
Die Size
232 mm²
438 mm²
Board Design
TDP
100W
275W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin + 1x 8-pin
Suggested PSU
-
600 W
Graphics Features
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.2
1.2
Shader Model
6.4
6.3