Calculate Pc Power Consumption 2021 (4K × 720p)

PSU = 80+ Gold (assume 87% efficient at ~50% load → but load here is ~65% of a 700W PSU). Efficiency ≈ 87%. [ P_\textAC = 457 / 0.87 \approx 525W ]

Used 4 hours gaming per day, 30 days/month. Energy = (525/1000) kW × 4h × 30 = 63 kWh/month Electricity rate = $0.15/kWh → Monthly cost = 63 × 0.15 = $9.45/month Idle (80W DC → ~94W AC) for 20h/day adds: 0.094×20×30=56.4 kWh → $8.46. Total monthly = ~$17.91 6. Accuracy & Limitations | Method | Accuracy | Pros | Cons | |--------|----------|------|------| | Wall meter | ±1–2% | Real total AC power | Requires hardware | | Software sensors | ±10–20% | Free, component-level | DC only, no PSU loss | | Online calculator | ±15–30% | Fast, no tools | Overestimates often | | Manual TDP sum | ±30–50% | Simple | TDP ≠ power; no transients | calculate pc power consumption