AMD Radeon RX 6800M vs AMD Radeon R5 M420

VS

AMD Radeon RX 6800M

AMD Radeon R5 M420

We compared two Mobile platform GPUs: 12GB VRAM Radeon RX 6800M 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 6800M 's Advantages

Released 5 years late

Boost Clock has increased by 181% (2390MHz vs 850MHz)

More VRAM (12GB vs 4GB)

Larger VRAM bandwidth (384.0GB/s vs 16.00GB/s)

2240 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6800M +2150%

12.24 TFLOPS

Radeon R5 M420

0.544 TFLOPS

Radeon RX 6800M

VS

Radeon R5 M420

Graphics Card

May 2021

Release Date

May 2016

Mobility Radeon

Generation

Gem System

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

2116 MHz

Base Clock

780 MHz

2390 MHz

Boost Clock

850 MHz

2000 MHz

Memory Clock

1000 MHz

Memory

12GB

Memory Size

4GB

GDDR6

Memory Type

DDR3

192bit

Memory Bus

64bit

384.0GB/s

Bandwidth

16.00GB/s

Render Config

40

Compute Units

5

-

2560

Shading Units

320

160

TMUs

20

64

ROPs

8

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

3 MB

L2 Cache

128 KB

96 MB

L3 Cache

-

Theoretical Performance

153.0 GPixel/s

Pixel Rate

6.800 GPixel/s

382.4 GTexel/s

Texture Rate

17.00 GTexel/s

24.47 TFLOPS

FP16 (half)

-

12.24 TFLOPS

FP32 (float)

544.0 GFLOPS

764.8 GFLOPS

FP64 (double)

34.00 GFLOPS

Board Design

145W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

-

Graphics Processor

Navi 22

GPU Name

Jet

Navi 22 XTM

GPU Variant

Jet PRO (216-0856040)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

17.2 billion

Transistors

0.69 billion

335 mm²

Die Size

56 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

2.1 (1.2)

1.3

Vulkan

1.2.170

-

6.5

Shader Model

6.5 (5.1)

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