RX 6800 XT 16GB for local AI in the UK
Ranks #4 of 23 for 7-9B models on value (£4 per token/s at £352 used).
Key facts
- Cheapest UK price
- £352 used
- Memory
- 16 GB
- Memory bandwidth
- 512 GB/s
- Largest model it can run
- ~23B parameters at 4-bit (estimate: ~0.6 GB per billion parameters + ~2 GB overhead)
- Shop
- eBay UK (used)
- £352 used: median of 134 UK eBay sold listings, 90 days, checked date unknown (source)
Disclosure: eBay "Shop" links are affiliate links (marked rel="sponsored"): if you buy, we may earn a small commission at no extra cost to you. Rankings are never affected by commission.
Speed and value by model size
| Size class | Fits at 4-bit? | Speed | £ per tok/s | Value rank | Reference model |
|---|---|---|---|---|---|
| 7-9B models | Yes | 95.6 words/sec* from 5 tests | £4 | #4 of 23 | Llama 2 7B Q4_0 |
| 12-14B models | Yes | no verified data yet | – | not ranked | Gemma 4 12B Q4_0 |
| 27-35B models | No (needs ~20 GB+) | – | – | – | Qwen 3.6 27B Q4_K_M |
| 70B+ models | No (needs ~42 GB+) | – | – | – | no reference model yet |
Speed is the median single-user decode speed running the like-for-like reference model for that class, in tokens per second (*a token is roughly ¾ of a word, so words/sec is a rough guide). Ranks use the cheapest UK price and need at least 3 test runs; ⚠ = low sample, shown but not ranked. "Fits" means the model fits fully in memory at ~4-bit. How we measure.
Other models measured
no verified data yet for other models.
Similar price alternatives
- RX 6800 16GB £316 used · 16 GB · 83.9 tok/s on 7-9B · #5 of 23 for 7-9B
- RTX 3080 10GB £337 used · 10 GB · 131.0 tok/s on 7-9B · #2 of 23 for 7-9B
- RX 6900 XT 16GB £371 used · 16 GB · 98.2 tok/s on 7-9B · #6 of 23 for 7-9B
- RTX 4060 Ti 16GB £412 used · 16 GB
See the RX 6800 XT 16GB on the leaderboard → · Best under £500 · All cards · Beginner's guide · Methodology
Weekly UK value moves, by email
Price drops, new benchmark results, best buys under £500 / £1,000 / £2,000.
Check your inbox to confirm: we use double opt-in, so you're only added after clicking the link in the confirmation email. Free; unsubscribe any time. Sent via Mailchimp (see their privacy notice).