PC Build to Run Qwen 3.5 35B-A3B Locally (Q5_K_M)
Written by Jakub Rusinowski · Last updated February 24, 2026
A complete parts list — GPU, motherboard, RAM and PSU — worked backward from Qwen 3.5 35B-A3B's VRAM requirement at Q5_K_M. Prices are 2026 street estimates and vary.
Requirements
| VRAM required | ~26 GB at Q5_K_M |
| System RAM | 32 GB |
| Estimated speed | ~247 tok/s |
| Complete build (est.) | $3,264 |
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GPU: NVIDIA GeForce RTX 5090
NVIDIA GeForce RTX 5090's 32 GB covers Qwen 3.5 35B-A3B at Q5_K_M (~26 GB needed), with headroom.
NVIDIA GeForce RTX 5090 32GB
32 GB VRAM · 575 W board power
2026 prices are volatile — check the current listing.
Motherboard: ASUS ProArt X670E-Creator WIFI
X670E (AM5) — pairs with the AMD Ryzen 9 7900X; DDR5, dual PCIe 5.0 x16 (x8/x8) for multi-GPU, 4 DIMM slots to 192 GB.
ASUS ProArt X670E-Creator WIFI
2026 prices are volatile — check the current listing.
RAM: Corsair Vengeance 32GB (2x16GB) DDR5-6000 C30 (AMD EXPO)
32 GB DDR5-6000 (2x16GB) meets Qwen 3.5 35B-A3B's 32 GB recommended system RAM.
Corsair Vengeance 32GB (2x16GB) DDR5-6000 C30
2026 prices are volatile — check the current listing.
PSU: Corsair RM1000e (ATX 3.1)
1000 W 80+ Gold covers NVIDIA GeForce RTX 5090 (575 W) + CPU 170 W with 30% headroom (~969 W required).
Corsair RM1000e (ATX 3.1)
2026 prices are volatile — check the current listing.
Swap Alternatives
- GPU: NVIDIA RTX 6000 Ada Generation — NVIDIA RTX 6000 Ada Generation's 48 GB covers Qwen 3.5 35B-A3B at Q5_K_M (~26 GB needed), with headroom.
- GPU: NVIDIA RTX PRO 6000 Blackwell — NVIDIA RTX PRO 6000 Blackwell's 96 GB covers Qwen 3.5 35B-A3B at Q5_K_M (~26 GB needed), with headroom.
- RAM: Corsair Vengeance 64GB (2x32GB) DDR5-6000 C30 (AMD EXPO) — More headroom: 64 GB DDR5-6000.
- PSU: Corsair HX1500i (ATX 3.1) — More headroom / future dual-GPU: 1500 W 80+ Platinum.
- The Corsair RM1000e (ATX 3.1) ships a native 12V-2x6 cable for the NVIDIA GeForce RTX 5090.
FAQ
What GPU do I need to run Qwen 3.5 35B-A3B at Q5_K_M?
NVIDIA GeForce RTX 5090's 32 GB covers Qwen 3.5 35B-A3B at Q5_K_M (~26 GB needed), with headroom.
How much VRAM does Qwen 3.5 35B-A3B need at Q5_K_M?
About 26 GB of VRAM plus 32 GB of system RAM.
What power supply does a NVIDIA GeForce RTX 5090 build need?
1000 W 80+ Gold covers NVIDIA GeForce RTX 5090 (575 W) + CPU 170 W with 30% headroom (~969 W required).
How much does a Qwen 3.5 35B-A3B PC cost?
About $3,264 for a complete build (GPU, motherboard, RAM, PSU, CPU, case, SSD), at 2026 street-price estimates.
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