作者： Jakub Rusinowski · 最后更新： 2026年7月10日
A complete parts list — GPU, motherboard, RAM and PSU — worked backward from Qwen 3 30B-A3B (MoE)'s VRAM requirement at Q4_K_M. Prices are 2026 street estimates and vary.
| VRAM required | ~19 GB at Q4_K_M |
| System RAM | 32 GB |
| Estimated speed | ~400 tok/s |
| Complete build (est.) | $1,749 |
AMD Radeon RX 7900 XT's 20 GB covers Qwen 3 30B-A3B (MoE) at Q4_K_M (~19 GB needed), a tight fit — little headroom.
在亚马逊查看价格 — AMD Radeon RX 7900 XT 20GB
B650 (AM5) — pairs with the AMD Ryzen 7 7700; DDR5, dual PCIe 4.0 x16 (x8/x8) for multi-GPU, 4 DIMM slots to 256 GB.
在亚马逊查看价格 — ASUS TUF Gaming B650-PLUS WIFI
32 GB DDR5-6000 (2x16GB) meets Qwen 3 30B-A3B (MoE)'s 32 GB recommended system RAM.
在亚马逊查看价格 — Corsair Vengeance 32GB (2x16GB) DDR5-6000 C30
650 W 80+ Gold covers AMD Radeon RX 7900 XT (315 W) + CPU 65 W with 30% headroom (~494 W required).
在亚马逊查看价格 — Corsair RM650e (ATX 3.1)
AMD Radeon RX 7900 XT's 20 GB covers Qwen 3 30B-A3B (MoE) at Q4_K_M (~19 GB needed), a tight fit — little headroom.
About 19 GB of VRAM plus 32 GB of system RAM.
650 W 80+ Gold covers AMD Radeon RX 7900 XT (315 W) + CPU 65 W with 30% headroom (~494 W required).
About $1,749 for a complete build (GPU, motherboard, RAM, PSU, CPU, case, SSD), at 2026 street-price estimates.
← Budget-first build recommender | Qwen 3 model page | AMD Radeon RX 7900 XT review