Homelab Dilemma During the RAM Crisis: Single High-Performance Machine vs. Fleet?
boyo1991 · reddit · 2026-08-07
Addressing the current surge in RAM (especially DDR5) prices, the author ran a simulation to compare the Total Cost of Ownership (TCO) of two Homelab setups: buying a single high-performance new machine versus building a fleet of older used machines.
Key conclusions:
- Short-lived projects or tight CapEx: The fleet wins decisively on cost and compute-per-dollar at the time of purchase, a gap widened by current RAM prices.
- Always-on services (2+ years): The fleet's power draw compounds against it, making a single modern machine plausibly cheaper for long-term reliance.
- The RAM crisis changes the tradeoff: Normally, a modern machine's higher compute-per-dollar is an advantage, but current DDR5 pricing is high enough to erase that entirely until fab capacity recovers (estimated late 2027).
The author emphasizes that decisions shouldn't rely on CapEx-only intuition; honest accounting of long-term operational costs like electricity is necessary to find the true crossover point.
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