AMD Radeon RX 550 Mobile vs AMD Radeon R9 390
GPU Specs Compare
Graphics Card
Release Date
Jul 2017
Jun 2015
Generation
Mobility Radeon
Pirate Islands
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1100 MHz
-
Boost Clock
1287 MHz
-
Memory Clock
1500 MHz
1500 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
128bit
512bit
Bandwidth
96.00GB/s
384.0GB/s
Render Config
Compute Units
10
40
Shading Units
640
2560
TMUs
40
160
ROPs
16
64
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Theoretical Performance
Pixel Rate
20.59 GPixel/s
64.00 GPixel/s
Texture Rate
51.48 GTexel/s
160.0 GTexel/s
FP16 (half)
1.647 TFLOPS
-
FP32 (float)
1.647 TFLOPS
5.120 TFLOPS
FP64 (double)
103.0 GFLOPS
640.0 GFLOPS
Graphics Processor
GPU Name
Lexa
Grenada
GPU Variant
Lexa PRO(215-0904018)
Grenada PRO(215-0880030)
Architecture
GCN 4.0
GCN 2.0
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
28 nm
Transistors
2.2 billion
6.2 billion
Die Size
103 mm²
438 mm²
Board Design
TDP
50W
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
📊 Benchmark
3DMark Time Spy
-
3,964
3DMark Time Spy Extreme
-
1,931