Radeon RX 7700 XT vs Radeon RX 7800 XT for Local AI
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Which GPU is better for local AI workloads?
The 7800 XT is the clear AI pick: +4GB capacity (14B Q8 territory) and +45% bandwidth. The 7700 XT at 12GB suits 8B–12B models on a tighter budget.
Spec comparison: what actually differs
The table below is computed live from our hardware database. Positive deltas favor the Radeon RX 7700 XT.
| Specification | Radeon RX 7700 XT | Radeon RX 7800 XT | Difference |
|---|---|---|---|
| VRAM | 12 | 16 | -25% |
| Memory bandwidth | 432 | 624 | -31% |
| Memory type | GDDR6 | GDDR6 | — |
| Memory bus | 192 | 256 | — |
| TDP | 245 | 263 | -7% |
| Stream processors | 3456 | 3840 | -10% |
| Architecture | RDNA 3 | RDNA 3 | — |
| Launch MSRP | $419 | $499 | -16% |
| Street price | $419 | $499 | -16% |
What about price?
Launch MSRP: $419 (7700 XT) versus $499 (7800 XT).
Which one should you buy for LLMs and image generation?
AMD · 2023
Radeon RX 7800 XT
Buy the 7800 XT — best value 16GB in AMD's 7000 lineup.
Full specs & benchmarks →Is it faster for LLM inference?
14B Q8 only on 7800 XT; shared models notably faster.
How does it handle image generation?
Flux realistically needs the 7800 XT's 16GB.
Which AI models fit on each card?
Computed from our model VRAM database at Q4 quantization: Radeon RX 7700 XT has 12 GB, Radeon RX 7800 XT has 16 GB.
Fit only on the Radeon RX 7800 XT (16 GB)
Fit on both cards
FLUX.1 dev
Llama 3.1 8B
Stable Diffusion 3.5 Large
Stable Diffusion XL 1.0
Whisper large-v3
Coqui XTTS-v2
Frequently asked questions
7700 XT vs 7800 XT for AI?
7800 XT: 16GB and 624 GB/s beat 12GB/432 GB/s for both model capacity and speed.