⚠️ STOCK llama.cpp WILL NOT LOAD THIS MODEL
⚠️ -fa off is required — flash attention breaks the vision path on gfx1151.
🚀 24.62 tok/s — +9.4% faster and 0.5 GiB smaller than Q4_K_M, ranges disjoint.
Phi-4-Reasoning-Vision-15B — ROCmFP4 (tier 102 COHERENT) GGUF
A 4-bit ROCmFP4 quantization for AMD gfx1151 (Ryzen AI MAX+ 395 / Strix Halo), quantized
from F16 GGUF (27.96 GiB) — a lossless source, not a requantization of a lower-bit build.
| |
|---|
| File | Phi-4-reasoning-vision-15B-Q4_0_ROCMFP4_COHERENT.gguf |
| Size | 8.0 GiB |
| BPW | 4.65 |
| ftype | Q4_0_ROCMFP4_COHERENT (102) |
⛔ Requires a llama.cpp with the ROCmFP4 quant types
Q4_0_ROCMFP4_COHERENT (ftype 102) exists only in
charlie12345/ROCmFPX, not upstream llama.cpp.
Ignore the auto-generated "Use this model" commands above.
All quant variants
Three builds, all measured in one session on one box with one binary (Ryzen AI MAX+ 395,
gfx1151, ROCm 7.2.4, ROCmFPX-2809dc5, -fa off) — so these rows are directly comparable.
Median of 3, warm-up discarded, otherwise-idle box.
| variant | ftype | size | bpw | decode (median) | range | repo |
|---|
| 4-bit COHERENT | 102 | 7.93 GiB | 4.65 | 24.91 | 24.88 – 24.91 | link |
| 8-bit AGENT | 115 | 14.34 GiB | 8.40 | 14.08 | 14.06 – 14.09 | link |
| 8-bit plain | 111 | 14.11 GiB | 8.27 | 14.15 | 14.13 – 14.20 | link |
⚠️ The 4-bit build is ~1.7× faster and 43% smaller. The 8-bit builds exist for accuracy
headroom, not throughput. The two 8-bit builds are within noise of each other (14.08 vs
14.15, ranges touching) — this model has no MTP draft head, and AGENT's benefit shows up in
draft acceptance, so there is nothing here for it to win.
⚠️ -fa off is mandatory — flash attention breaks the vision path on gfx1151.
The BF16 mmproj (862 MiB) ships in every one of these repos and is required for vision.
Measured
Ryzen AI MAX+ 395 (gfx1151, 128 GB unified, ROCm 7.2.4). Median of 3+, warm-up discarded,
otherwise-idle box. Correctness at the model's official sampling.
| build | size | decode (median) | range |
|---|
| this build | 8.0 GiB | 24.62 | [23.42 – 25.37] |
| Q4_K_M | 8.5 GiB | 22.50 | [22.25 – 22.50] |
+9.4%, ranges disjoint. Vision verified: an 8×8 red PNG is correctly described as Red.
Correctness: 17×23 ⇒ ✅ 391 · capital of Japan ⇒ ✅ Tokyo · days in 2024 ⇒ ✅ 366
Per-tensor types (audited in the finished file)
output.weight Q6_K · token_embd Q6_K · norms F32 · bulk TYPE_100 (160) · vision tower kept at BF16 (mmproj, 823 MiB — included)
Serve with -fa off and the bundled BF16 mmproj.
What was NOT measured
- No perplexity run, and no quality A/B against the baseline or the source. The checks
above are memorized-fact prompts — necessary but not sufficient; a damaged model can pass them.
- No long-context testing.
- No tool-calling evaluation.
Base model licence inherited; credit for the model goes to its authors.
