Home GPU Comparison AMD Radeon RX 580X Mobile vs AMD Radeon R5 M420

AMD Radeon RX 580X Mobile vs AMD Radeon R5 M420

AMD Radeon RX 580X Mobile
VS
AMD Radeon R5 M420
AMD Radeon RX 580X Mobile
AMD Radeon R5 M420
We compared two Mobile platform GPUs: 8GB VRAM Radeon RX 580X Mobile and 4GB VRAM Radeon R5 M420 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 580X Mobile 's Advantages
Released 1 years and 11 months late
Boost Clock has increased by 27% (1077MHz vs 850MHz)
More VRAM (8GB vs 4GB)
Larger VRAM bandwidth (256.0GB/s vs 16.00GB/s)
1984 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon RX 580X Mobile +812%
4.963 TFLOPS
Radeon R5 M420
0.544 TFLOPS
Radeon RX 580X Mobile
VS
Radeon R5 M420

Graphics Card

Apr 2018
Release Date
May 2016
Mobility Radeon
Generation
Gem System
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8

Clock Speeds

1000 MHz
Base Clock
780 MHz
1077 MHz
Boost Clock
850 MHz
2000 MHz
Memory Clock
1000 MHz

Memory

8GB
Memory Size
4GB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
64bit
256.0GB/s
Bandwidth
16.00GB/s

Render Config

36
Compute Units
5
-
-
-
2304
Shading Units
320
144
TMUs
20
32
ROPs
8
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
2 MB
L2 Cache
128 KB
-
-
-

Theoretical Performance

34.46 GPixel/s
Pixel Rate
6.800 GPixel/s
155.1 GTexel/s
Texture Rate
17.00 GTexel/s
4.963 TFLOPS
FP16 (half)
-
4.963 TFLOPS
FP32 (float)
544.0 GFLOPS
310.2 GFLOPS
FP64 (double)
34.00 GFLOPS

Board Design

100W
TDP
Unknown
-
-
-
No outputs
Outputs
Portable Device Dependent
None
Power Connectors
-

Graphics Processor

Polaris 20
GPU Name
Jet
Polaris 20M XT
GPU Variant
Jet PRO (216-0856040)
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
5.7 billion
Transistors
0.69 billion
232 mm²
Die Size
56 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
2.1 (1.2)
1.2
Vulkan
1.2.170
-
-
-
6.4
Shader Model
6.5 (5.1)

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