RX 9070 XT vs RX 7900 XTX
RX 9070 XT vs RX 7900 XTX: £799.99 vs £969.77 in the UK (2026-10-20), £/GB of VRAM, which AI models each runs, and a verdict.
| RX 9070 XT | RX 7900 XTX | |
|---|---|---|
 |  | |
| Brand | AMD | AMD |
| VRAM | 16 GB GDDR6 | 24 GB GDDR6 |
| Memory bus | 256-bit | 384-bit |
| Cheapest new UK price | £799.99 at Scan also AWD-IT £799.99, Novatech £819.98, PcNova £865.99, Box £879.99 | £969.77 at PcNova |
| Price history | Low £782.13at 30-day avg🔔 Alert me | Tracking since 20 Oct 2026🔔 Alert me |
| £ per GB VRAM | £50.00 | £40.41 |
| Biggest model at Q4 (est.) | Phi-4 14B | Qwen2.5-Coder 32B |
| Biggest model at Q8 (est.) | Gemma 3 12B | Qwen3 14B |
| Models that fit at Q4 | 10 of 21 | 16 of 21 |
| Software | ROCm / Vulkan (works in llama.cpp, Ollama, LM Studio; fewer tools than CUDA) | ROCm / Vulkan (works in llama.cpp, Ollama, LM Studio; fewer tools than CUDA) |
| Specs | TechPowerUp · our page | TechPowerUp · our page |
Verdict
- RX 7900 XTX is cheaper per GB of VRAM (£40.41 vs £50.00), and costs £169.78 more but gives more memory.
- RX 7900 XTX has more VRAM (24 GB vs 16 GB), so it fits bigger models: up to Qwen2.5-Coder 32B at Q4 vs Phi-4 14B.
This is a value-for-memory verdict for local AI, not a gaming benchmark. We haven't measured tokens/sec.
FAQ
Is the RX 9070 XT or RX 7900 XTX better for local LLMs?
RX 7900 XTX is cheaper per GB of VRAM (£40.41 vs £50.00), and costs £169.78 more but gives more memory. RX 7900 XTX has more VRAM (24 GB vs 16 GB), so it fits bigger models: up to Qwen2.5-Coder 32B at Q4 vs Phi-4 14B.
Which is cheaper in the UK, RX 9070 XT or RX 7900 XTX?
On 2026-10-20: RX 9070 XT from £799.99 (Scan), RX 7900 XTX from £969.77 (PcNova).
Can the RX 9070 XT and RX 7900 XTX run a 14B model?
RX 9070 XT: yes at Q4; RX 7900 XTX: yes at Q4 (our estimate, ~4k context).
Prices: lowest listed new price at UK shops (AWD-IT, Box, GamingKit, Laptops Direct, Novatech, PCHUB.UK, PcNova, Scan) for GPUs; laptop rows may include EU shops (prices exclude UK shipping/import). Stock not verified. Model fit: GGUF size ×1.1 + 1 GB (estimate). Other comparisons: RX 9060 XT 16GB vs RTX 5060 Ti 16GB · RTX 3060 12GB vs RX 9060 XT 16GB · RTX 5070 vs RX 9070 · RX 9070 vs RX 9070 XT · RX 9070 XT vs RTX 5070 Ti · RTX 5060 Ti 16GB vs RTX 5070 · Radeon AI PRO R9700 vs RTX 5090 · RTX 5070 vs RTX 5070 Ti laptop · RTX 5060 vs RTX 5070 laptop · RTX 3060 12GB vs Arc B580 · Arc B580 vs RX 9060 XT 16GB · RX 9060 XT 16GB vs RTX 5070 · RX 9070 vs RTX 5060 Ti 16GB · RTX 5060 Ti 16GB vs RX 9070 XT · RX 7900 XTX vs RTX 5070 Ti