Mid-range PC (RTX 3070) electricity cost — Heavy — 6 hours per session
Heavy user or PC left on for long sessions, 6 hours a day. A <strong>Mid-range PC (RTX 3070)</strong> draws 350 W total (GPU 220 W + rest of system 130 W). Cost: £3.84/week at Ofgem cap 26.11p/kWh (1 July to 30 September 2026).
Mid-range PC (RTX 3070) — Heavy — 6 hours per session: 0.350 kW × 6 h = 2.100 kWh = 54.8p/session. Weekly (7 sessions): £3.84. Monthly: £16.63. Annual: £199.58. Source: Nvidia / AMD / Intel — published TDP specifications for GPU and CPU components + Ofgem (OGL v3.0).
- Per session
- 54.8p
- Per week (7 sessions)
- £3.84
- Per month
- £16.63
- Per year
- £199.58
Rig specification
- Tier
- mid-range
- GPU
- Nvidia GeForce RTX 3070
- GPU TDP
- 220 W
- Rest of system
- 130 W
- Total system
- 350 W
- Sessions/week
- 7
Nvidia RTX 3070 TDP 220 W (published spec); rest of system ~130 W mid-range build
How the cost is worked out
- System power: 220 W (GPU) + 130 W (CPU + rest) = 350 W total.
- Per session: 350 W ÷ 1000 × 6 h = 2.100 kWh × 26.11p = 54.8p.
- Weekly: 54.8p × 7 sessions = £3.84.
- Monthly: £3.84 × 52 ÷ 12 = £16.63.
- Annual: £3.84 × 52 = £199.58.
Same scenario — other gaming rigs
Track gaming PC running costs
Updated each time the Ofgem cap changes.
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GPU TDP from Nvidia / AMD / Intel — published TDP specifications for GPU and CPU components. Unit rate 26.11p/kWh from Ofgem — Energy price cap unit rates and standing charges (1 July to 30 September 2026), OGL v3.0. Last updated: 2026-06-20.