Home GPU Comparison AMD Radeon 550X Mobile vs AMD Radeon R9 M390X

AMD Radeon 550X Mobile vs AMD Radeon R9 M390X

We compared two Mobile platform GPUs: 4GB VRAM Radeon 550X Mobile and 4GB VRAM Radeon R9 M390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X Mobile 's Advantages
Released 2 years and 11 months late
Boost Clock1287MHz
Lower TDP (50W vs 75W)
AMD Radeon R9 M390X 's Advantages
Larger VRAM bandwidth (160.0GB/s vs 48.00GB/s)
1408 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon 550X Mobile
1.647 TFLOPS
Radeon R9 M390X +79%
2.961 TFLOPS
VS

Graphics Card

Apr 2018
Release Date
May 2015
Mobility Radeon
Generation
Crystal System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16

Clock Speeds

1100 MHz
Base Clock
-
1287 MHz
Boost Clock
-
1500 MHz
Memory Clock
1250 MHz

Memory

4GB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
256bit
48.00GB/s
Bandwidth
160.0GB/s

Render Config

10
Compute Units
32
-
-
-
640
Shading Units
2048
40
TMUs
128
16
ROPs
32
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
512 KB
-
-
-

Theoretical Performance

20.59 GPixel/s
Pixel Rate
23.14 GPixel/s
51.48 GTexel/s
Texture Rate
92.54 GTexel/s
1.647 TFLOPS
FP16 (half)
2.961 TFLOPS
1.647 TFLOPS
FP32 (float)
2.961 TFLOPS
103.0 GFLOPS
FP64 (double)
185.1 GFLOPS

Board Design

50W
TDP
75W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
None

Graphics Processor

Polaris 23
GPU Name
Amethyst
Polaris 23 MXT
GPU Variant
Amethyst XT
GCN 4.0
Architecture
GCN 3.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
2.2 billion
Transistors
5 billion
103 mm²
Die Size
366 mm²

Graphics Features

12 (12_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.1
OpenCL
2.0
1.2
Vulkan
1.2
-
-
-
6.4
Shader Model
6.3

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