AMD RX 7800 XT - 16GB usable
Specifications
| Brand | AMD |
|---|---|
| Model | RX 7800 XT |
| Usable VRAM | 16GB |
| Architecture | RDNA3 |
| CUDA / Stream Processors | 3,840 |
| Memory Bandwidth | 624 GB/s |
| TDP | 263W |
| FP32 TFLOPS | 43 |
Current Offers
Used from £550
Prices last updated:
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Lowest tracked offers by retailer
UK · GBP · Weekly since Aug 2026 · Shipping may be extra
- eBay £550 at 90-day high
About these prices
Each line is the lowest offer we tracked from that retailer at weekly snapshots, ending at today's offer. The condition can vary between snapshots (new, used, or unrecorded for older ones). eBay prices exclude shipping.
Weekly offers table
| Date | eBay |
|---|---|
| Today, Nov 3, 2026 | £550.00 |
| Oct 30, 2026 | £496.21 |
| Oct 23, 2026 | £498.21 |
| Oct 9, 2026 | £449.99 |
| Oct 2, 2026 | £445.30 |
| Sep 25, 2026 | £465.70 |
| Sep 18, 2026 | £470.80 |
| Sep 11, 2026 | £465.70 |
| Sep 4, 2026 | £394.30 |
| Sep 1, 2026 | £398.21 |
| Aug 28, 2026 | £400.00 |
| Aug 21, 2026 | £404.50 |
For AI / LLM Use
Good for 14B models. 30B requires aggressive quantization. Verify ROCm support for the exact framework and operating system you plan to use.
What Models Can It Run?
- 14B Q6_K, 30B Q3_K (tight)
- 14B Q4_K_M, 7B full precision
- 7B Q6_K, 14B Q3_K (tight)
- 7B Q4_K_M only
Estimated Performance
Generation: ~47 tokens/sec
Prefill: ~768 tokens/sec
Recommended Quantisations
- Q4_K_M for 14B models
- Q6_K for 7B-8B models
- Q8 for 7B if VRAM allows
Pros & Cons
Pros
- RDNA3 architecture: supported by current ROCm stacks
- Consumer card: easy to install, display output
Cons
- 16GB usable VRAM: may need quantization for 30B+ models
- Moderate memory bandwidth: not the fastest for inference
- ROCm and CUDA-first framework compatibility should be checked before purchase
Community Verdict
No community reviews yet for the RX 7800 XT. Know a good review? Let us know.