The goal is a build around ~1M rub that maximizes income and passes vast.ai verification without hitting the known traps.
Key criteria
- GPU — demand and $/W: bet on RTX 4090 / 5090
- RAM — 32–64 GB per card (low RAM = fewer rentals)
- Disk — NVMe SSD, 100–200 GB per GPU
- PSU with 20–30% headroom, 80+ Gold/Platinum
- Cooling — open-air frame with directed airflow
- NIC — Intel only (Realtek throttles upload)
- CPU — many-core (EPYC / Threadripper / Ryzen 9)
Three builds for about 1M rub
- A — one powerful 4×4090 rig (~950k rub): max income and simplicity, but concentration risk; disable VMs due to the reset bug
- B — two 2×(2×4090) rigs (~1M rub): diversification, but pricier and more complex
- C — 2×5090 (~820k rub): top demand, VMs allowed, headroom to grow
| Build | GPU | Cost | VM | Profile |
|---|---|---|---|---|
| A | 4×4090 | ~950,000 rub | no | max income, simple |
| B | 2×2×4090 | ~1,000,000 rub | no | diversification |
| C | 2×5090 | ~820,000 rub | yes | top demand, headroom |
Pitfalls: Intel NIC only; RTX 4090 + VM = reset bug (rent containers, VMs off), 5080/5090 are unaffected; do not skimp on RAM; PSU with real headroom — 4×4090 can spike over 1800 W.