AMD Radeon R9 390X vs AMD Radeon Vega 8 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Jun 2015
Jan 2021
Generation
Pirate Islands
Cezanne
Type
Desktop
Integrated
Bus Interface
PCIe 3.0 x16
IGP
Clock Speeds
Memory Clock
1500 MHz
System Shared
Base Clock
—
300 MHz
Boost Clock
—
2000 MHz
Memory
Memory Size
8GB
System Shared
Memory Type
GDDR5
System Shared
Memory Bus
512bit
System Shared
Bandwidth
384.0GB/s
System Dependent
Render Config
Compute Units
44
8
Shading Units
2816
512
TMUs
176
32
ROPs
64
8
L1 Cache
16 KB (per CU)
—
L2 Cache
1024 KB
—
Theoretical Performance
Pixel Rate
67.20 GPixel/s
16.00 GPixel/s
Texture Rate
184.8 GTexel/s
64.00 GTexel/s
FP32 (float)
5.914 TFLOPS
2.048 TFLOPS
FP64 (double)
739.2 GFLOPS
128.0 GFLOPS
FP16 (half)
—
4.096 TFLOPS
Graphics Processor
GPU Name
Grenada
Cezanne
GPU Variant
Grenada XT(215-0880004)
—
Architecture
GCN 2.0
GCN 5.1
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
6.2 billion
9.8 billion
Die Size
438 mm²
156 mm²
Board Design
TDP
275W
45W
Suggested PSU
600 W
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin + 1x 8-pin
None
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
6.4
Benchmark
3DMark Time Spy
—
719
3DMark Time Spy Extreme
—
351
▲ Specs Compare
Data sourced from official specifications and benchmark tests.