# Radeon R5 M420

> AMD · GCN 1.0

Discontinued

Canonical: https://gpuninja.com/chips/radeon-r5-m420
Data as of: 2026-10-11T17:11:14Z
Path: Home › GPU chips

> **Discontinued.** Discontinued on 22 Jun 2021. This page is a preserved snapshot of the last recorded specs, prices and benchmark results.

- Specs verified: 11 Oct 2026, 17:11 UTC

## Specifications

- Vendor: AMD (Verified · source notebookcheck.com · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- Architecture: GCN 1.0 (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- Die: Hainan (Verified · source raw.githubusercontent.com · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- Process: TSMC 28 nm (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- Shader cores: 320 (Verified · source notebookcheck.com · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- Tensor cores: None
- RT cores: None
- Memory bus: 64-bit (Verified · source notebookcheck.com · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- Max VRAM: 4 GB (Verified · source notebookcheck.com · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- Reference boost clock: Unknown
- Reference TDP: Unknown
- Host interface: Not recorded
- Launch MSRP: No public MSRP
- Launch date: 15 May 2016 (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- Segment: Mobile (Verified · source notebookcheck.com · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- PCI IDs: 1002:666f (Verified · source treexy.com · retrieved 11 Oct 2026, 16:33 UTC · checked 11 Oct 2026, 17:11 UTC)
- Status: Discontinued on 22 Jun 2021 (Unverified · source tomshardware.com · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)

## Performance

- Memory bandwidth: 16 GB/s (Verified · source en.wikipedia.org · retrieved 11 Oct 2026, 16:26 UTC · checked 11 Oct 2026, 17:11 UTC)
- FP32 compute: Unknown
- FP16 compute: Not supported
- BF16 compute: Not supported
- FP8 compute: Not supported
- FP4 compute: Not supported
- INT8 compute: Not supported

## Boards built on this chip

Board, Chip, VRAM, TDP, Length, Slots, Price, Stock

No boards recorded for this chip.

## Benchmarks

No benchmark results recorded.

## Sources

- https://www.notebookcheck.com/AMD-Radeon-R5-M420-GPU.325672.0.html — Vendor, Shader cores, Memory bus, Max VRAM, Segment; last verified 11 Oct 2026, 17:11 UTC
- https://en.wikipedia.org/wiki/Graphics_Core_Next — Architecture, Process; last verified 11 Oct 2026, 17:11 UTC
- https://raw.githubusercontent.com/torvalds/linux/master/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c — Die; last verified 11 Oct 2026, 17:11 UTC
- https://en.wikipedia.org/wiki/Radeon_400_series — Launch date, Memory bandwidth; last verified 11 Oct 2026, 17:11 UTC
- https://treexy.com/products/driver-fusion/database/display-adapters/advanced-micro-devices-amd/radeon-r5-m420/ — PCI IDs; last verified 11 Oct 2026, 17:11 UTC
- https://www.tomshardware.com/news/amd-retires-pre-rx-400-gpus — Status; last verified 11 Oct 2026, 17:11 UTC