Home / Models / Phi-4 / AMD Radeon RX 6800 XT 16 GB
Can Phi-4 run on AMD Radeon RX 6800 XT 16 GB?
Yes. Calculated memory fit: Phi-4 can run entirely in this GPU’s usable VRAM at one or more supported quantizations.
Can it run?
- Can it run?
- Yes, full GPU fit (calculated estimate).
- Full GPU fit?
- Yes
- Model
- Phi-4 · 15B
- GPU
- AMD Radeon RX 6800 XT 16 GB · 16 GB advertised
Memory calculation
Breakdown for Q4 at 8K context, batch size 1. Calculator v1.0.0.
| Model weights | 8.6 GB |
|---|---|
| KV cache | 1.6 GB |
| Runtime reserve | 0.9 GB |
| Safety margin | 0.5 GB |
| Required (estimated) | 11.6 GB |
| GPU usable VRAM | 14.4 GB |
Result: FITS IN VRAM
Quantization table
| Quantization | 2K | 4K | 8K | 16K |
|---|---|---|---|---|
| BF16 | Offload | Offload | Offload | Offload |
| FP16 | Offload | Offload | Offload | Offload |
| Q3 | Fits | Fits | Fits | Fits |
| Q4 | Fits | Fits | Fits | Fits |
| Q5 | Fits | Fits | Fits | Limited context |
| Q6 | Fits | Limited context | Limited context | Limited context |
| Q8 | Offload | Offload | Offload | Offload |
What fits entirely in VRAM?
- Q3 at 16K context
- Q3 at 2K context
- Q3 at 4K context
- Q3 at 8K context
- Q4 at 16K context
- Q4 at 2K context
- Q4 at 4K context
- Q4 at 8K context
- Q5 at 2K context
- Q5 at 4K context
- Q5 at 8K context
- Q6 at 2K context
What requires RAM offload?
Offload is shown only when the model does not fully fit in usable VRAM but stays within the modeled offload allowance.
Available graphics cards
These SKUs use this GPU chip. Amazon CTAs appear only for EXACT/HIGH matches. Absence of a price does not change the compatibility result above.
GIGABYTE GAMING Radeon RX 6800 XT OC 16G AMD 16 GB GDDR6
16 GB · Amazon EXACT
$995.00
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MSI GAMING Radeon RX 6800 XT X TRIO 16G AMD 16 GB GDDR6
16 GB · Amazon EXACT
$1222.24
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MSI GAMING Radeon RX 6800 XT Z Trio 16G AMD 16 GB GDDR6
16 GB · Amazon EXACT
$949.00
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GIGABYTE AORUS Radeon RX 6800 XT MASTER TYPE C 16G AMD 16 GB GDDR6
16 GB · Amazon unmatched
ASUS TUF Gaming TUF-RX6800XT-O16G-GAMING AMD Radeon RX 6800 XT 16 GB GDDR6
16 GB · Amazon unmatched
ASUS ROG -STRIX-LC-RX6800XT-O16G-GAMING AMD Radeon RX 6800 XT 16 GB GDDR6
16 GB · Amazon unmatched
Sources
Model: official config microsoft/phi-4 (main). GPU/product specs: Icecat. Compatibility: RigForAI calculator v1.0.0 estimated VRAM · Q8 at 8K: CPU_RAM_OFFLOAD_REQUIRED. Amazon: affiliate commerce match, not a spec source.