PC Build to Run Qwen 3.5 9B Locally (Q4_K_M)
作者： Jakub Rusinowski · 最后更新： 2026年2月15日
A complete parts list — GPU, motherboard, RAM and PSU — worked backward from Qwen 3.5 9B's VRAM requirement at Q4_K_M. Prices are 2026 street estimates and vary.
Requirements
| VRAM required | ~6 GB at Q4_K_M |
| System RAM | 32 GB |
| Estimated speed | ~78 tok/s |
| Complete build (est.) | $630 |
Weights plus framework overhead only — this model publishes no architecture we can read, so no KV cache is included. A real session needs more; the figure is a floor, not a target.
或在 Vast.ai 比较，低至 $0.35/小时 (typical low · varies)
作为亚马逊联盟成员，我们从符合条件的购买中获得收入。云 GPU 链接为推荐链接——我们可能获得佣金，您无需额外付费。
GPU: NVIDIA GeForce RTX 3080 12GB
NVIDIA GeForce RTX 3080 12GB's 12 GB covers Qwen 3.5 9B at Q4_K_M (~6 GB needed), with headroom.
Motherboard: MSI MAG B550 Tomahawk
B550 (AM4) — pairs with the AMD Ryzen 5 5600; DDR4, dual PCIe 4.0 x16 (x8/x8) for multi-GPU, 4 DIMM slots to 128 GB.
RAM: Corsair Vengeance LPX 32GB (2x16GB) DDR4-3600 C18 PREVIEW
32 GB DDR4-3600 (2x16GB) meets Qwen 3.5 9B's 32 GB recommended system RAM.
PSU: Corsair RM650e (ATX 3.1)
650 W 80+ Gold covers NVIDIA GeForce RTX 3080 12GB (350 W) + CPU 65 W with 30% headroom (~540 W required).
Swap Alternatives
- GPU: AMD Radeon RX 9060 XT 16GB — AMD Radeon RX 9060 XT 16GB's 16 GB covers Qwen 3.5 9B at Q4_K_M (~6 GB needed), with headroom.
- GPU: NVIDIA GeForce RTX 5060 Ti 16GB — NVIDIA GeForce RTX 5060 Ti 16GB's 16 GB covers Qwen 3.5 9B at Q4_K_M (~6 GB needed), with headroom.
- PSU: Corsair RM850e (ATX 3.1) — More headroom / future dual-GPU: 850 W 80+ Gold.
- Some component specs are marked "preview" (pending a second independent source) — see the badges.
FAQ
What GPU do I need to run Qwen 3.5 9B at Q4_K_M?
NVIDIA GeForce RTX 3080 12GB's 12 GB covers Qwen 3.5 9B at Q4_K_M (~6 GB needed), with headroom.
How much VRAM does Qwen 3.5 9B need at Q4_K_M?
About 6 GB of VRAM plus 32 GB of system RAM.
What power supply does a NVIDIA GeForce RTX 3080 12GB build need?
650 W 80+ Gold covers NVIDIA GeForce RTX 3080 12GB (350 W) + CPU 65 W with 30% headroom (~540 W required).
How much does a Qwen 3.5 9B PC cost?
About $630 for a complete build (GPU, motherboard, RAM, PSU, CPU, case, SSD), at 2026 street-price estimates.
Qwen 3.5 9B at Other Quant Levels
Other Popular Build Targets
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Model & GPU
More Ways to Build
← Budget-first build recommender | Qwen 3.5 model page | NVIDIA GeForce RTX 3080 12GB review