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Can Ryzen AI Max 390 64GB run Solar Open 2?

AMD · 48 GB LPDDR5X · 215 GB/s bandwidth · Upstage · 250.0B (active 15.0B) · MoE · model ctx up to 1024K

❌ No — Solar Open 2 Q4 needs 138.69 GB, card only has 48 GB
VRAM: 138.69 GB needed of 48 GB
Speed: ~1.7 tok/s (estimated)
FF · No FitComposite score: VRAM headroom × 0.5 + tok/s speed × 0.5. Q4 @ 8K context.
ROCM
Your GPU won't fit Solar Open 2, but runs these similar models: Qwen3-8B, gemma-4-26B-A4B-itor☁️ Rent on RunPod from ~$0.50/hr
Estimates from memory-bandwidth formula; rows marked "measured" override. Methodology.

Fit & speed by quant and context

QuantContextVRAM neededFits?tok/s (decode)
Q44K138.69 GBNo1.8 ± est.
Q48K default138.88 GBNo1.7 ± est.
Q432K140.0 GBNo1.7 ± est.
FP164K501.19 GBNo
FP168K default501.38 GBNo
FP1632K502.5 GBNo

Fits = weights + KV(ctx) + 1 GB overhead ≤ 95% of VRAM. Measured anchors are context-agnostic; the fit verdict is recomputed per context. A missing tok/s means the model is far beyond this card (offload-only territory).

VRAM breakdown at 8K context

QuantWeightsKV cacheOverheadTotal neededRyzen AI Max 390 64GB VRAM
Q4137.5 GB0.38 GB1 GB138.88 GB48 GB
FP16500.0 GB0.38 GB1 GB501.38 GB48 GB

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