Can I Run DeepSeek R1 (671B) on AMD Radeon RX 7800 XT?

Name: LLM Configurator — GPU VRAM Checker
Author: LLM Configurator

Written by Jakub Rusinowski · Last updated August 15, 2026

No. DeepSeek R1 (671B) needs 405.1 GB at Q4_K_M and the AMD Radeon RX 7800 XT has only 16 GB. No quantization we publish closes a gap that size.

The numbers

Model	DeepSeek R1 (671B)
Parameters	671B
Quantization	Q4_K_M
VRAM needed	405.1 GB
AMD Radeon RX 7800 XT VRAM	16 GB
Verdict	Does not fit

What to do next

Either step down to a smaller size in this family, or move to a Apple M3 Ultra (512 GB), the cheapest card we track with enough VRAM.

Affiliate disclosure: Some links on this page are affiliate links — if you buy through them, LLM Configurator may earn a commission at no extra cost to you. As an Amazon Associate, LLM Configurator earns from qualifying purchases.

Cheapest card we track with enough VRAM for DeepSeek R1 (671B):

Apple Mac Studio M3 Ultra

512 GB VRAM · 60 W board power

2026 prices are volatile — check the current listing.

Check price on Amazon

Won't fit — rent DeepSeek R1 (671B) instead

DeepSeek R1 (671B) needs ~405 GB but this GPU has 16 GB. Rent a 8× H100 (640 GB)-class GPU by the hour instead of buying one:

Affiliate links — we may earn a commission if you sign up, at no extra cost to you.

RunPod $23.12/hr

Rent on RunPod →

Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

Other DeepSeek R1 sizes on the AMD Radeon RX 7800 XT

DeepSeek R1 Distill Qwen 32B — runs at a lower quant (19.3 GB)
DeepSeek R1 Distill Llama 8B — runs (4.8 GB)

DeepSeek R1 (671B) on nearby hardware

Intel Arc B580 (12 GB) — does not fit
AMD Radeon RX 7900 XT (20 GB) — does not fit

All DeepSeek R1 sizes on the AMD Radeon RX 7800 XT | VRAM calculator for DeepSeek R1 (671B) | AMD Radeon RX 7800 XT GPU page | Check your hardware