A Cheap Home Server Is Not Worth It... Unless
Home server electricity costs: measure your old PC's idle watts, compare against mini PC payback timelines using real UK/US tariffs and tested hardware. Running an old desktop as a home server costs far more than you think, Jeff Geerling's $60 eBay Dell OptiPlex idles at 66 watts, costing $104 yearly in electricity alone at the US average rate. A modern mini PC with Intel's N150 chip draws roughly 10 watts at idle, about $16 annually, but the real question is payback: does the $299, 349 upfront cost justify replacing a machine you already own? The answer hinges on three hard numbers: your old computer's actual idle draw measured at the wall (not CPU TDP), your local electricity rate (17, 33 cents/kWh across the US; 26, 27p/kWh in the UK as of 2025, 2026), and how many years you'll keep the new box. Tested mini PCs like the GMKtec G3 Plus and ACEMAGIC V1 do save 8, 10 watts versus older towers, but against HP's efficient 15-watt office tower, a $300 mini PC needs 40 years to break even. Against Geerling's Dell, it pays for itself in 3.5 years. In California (33¢/kWh), the payoff is under 2 years; in Louisiana (13¢/kWh), nearly 5 years. The video walks through the math using actual power-meter data, Ofgem and EIA tariffs, and real product prices, then shows the cheapest move: sleep your server at night, pull the GPU if it's a gaming tower, or measure before you buy. For anyone running always-on home storage or backups, this is the hardware economics you need. Chapters: 0:00 Intro 1:37 Running cost 4:07 Mini PC 5:59 Break-even 8:38 Conclusion Tools & resources mentioned: - Ofgem Energy Price Cap: https://www.ofgem.gov.uk/your-energy-supply/your-energy-bill/energy-price-cap-unit-rates-and-standing-charges - EIA Electricity Prices: https://www.eia.gov/energyexplained/electricity/prices-and-factors-affecting-prices.php - Jeff Geerling GMKtec G3 Plus review: https://www.jeffgeerling.com/blog/2025/almost-perfect-mini-nas-my-mini-rack - ServeTheHome: https://www.servethehome.com - TechPowerUp: https://www.techpowerup.com About The Stack The Stack helps you build with AI. Each video takes one tool, model, or workflow and shows how it works in a few focused minutes, with the real benchmarks and real costs. We go deep on Claude Code and Cursor for AI coding, AI agents and MCP servers, the open-source AI tools and GitHub repos most people miss, RAG and vector search, fine-tuning, and running local LLMs on your own machine with Ollama and LM Studio. We compare models like ChatGPT and Claude, test AI automation with Zapier, Make, and n8n, and flag the tools that actually ship. Subscribe for new breakdowns: https://www.youtube.com/@the-stack-ai?sub_confirmation=1 #homelab #nas #minipc
