AMD Radeon R9 390X vs AMD Radeon Pro Vega 20
GPU · Specs Compare
Graphics Card
Release Date
Jun 2015
Nov 2018
Generation
Pirate Islands
Radeon Pro Mac
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Memory Clock
1500 MHz
740 MHz
Base Clock
—
815 MHz
Boost Clock
—
1283 MHz
Memory
Memory Size
8GB
4GB
Memory Type
GDDR5
HBM2
Memory Bus
512bit
1024bit
Bandwidth
384.0GB/s
189.4GB/s
Render Config
Compute Units
44
20
Shading Units
2816
1280
TMUs
176
80
ROPs
64
32
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
1024 KB
Theoretical Performance
Pixel Rate
67.20 GPixel/s
41.06 GPixel/s
Texture Rate
184.8 GTexel/s
102.6 GTexel/s
FP32 (float)
5.914 TFLOPS
3.284 TFLOPS
FP64 (double)
739.2 GFLOPS
205.3 GFLOPS
FP16 (half)
—
6.569 TFLOPS
Graphics Processor
GPU Name
Grenada
Vega 12
GPU Variant
Grenada XT(215-0880004)
Vega 12 XTA
Architecture
GCN 2.0
GCN 5.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
6.2 billion
Unknown
Die Size
438 mm²
Unknown
Board Design
TDP
275W
100W
Suggested PSU
600 W
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin + 1x 8-pin
—
Graphics Features
DirectX
12 (12_0)
12 (12_1)
OpenGL
4.6
4.6
OpenCL
2.0
2.1
Vulkan
1.2
1.2
Shader Model
6.3
6.3
Benchmark
3DMark Time Spy
—
2,596
3DMark Time Spy Extreme
—
1,211
▲ Specs Compare
Data sourced from official specifications and benchmark tests.