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Gaming PC · Ofgem 1 July to 30 September 2026

Mid-range PC (RTX 3070) electricity cost — Weekend marathon — 8 hours on two days

Weekend-warrior: 8-hour gaming sessions on Saturday and Sunday. A <strong>Mid-range PC (RTX 3070)</strong> draws 350 W total (GPU 220 W + rest of system 130 W). Cost: £1.46/week at Ofgem cap 26.11p/kWh (1 July to 30 September 2026).

Mid-range PC (RTX 3070) — Weekend marathon — 8 hours on two days: 0.350 kW × 8 h = 2.800 kWh = 73.1p/session. Weekly (2 sessions): £1.46. Monthly: £6.34. Annual: £76.03. Source: Nvidia / AMD / Intel — published TDP specifications for GPU and CPU components + Ofgem (OGL v3.0).

Per session
73.1p
Per week (2 sessions)
£1.46
Per month
£6.34
Per year
£76.03

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
2

Nvidia RTX 3070 TDP 220 W (published spec); rest of system ~130 W mid-range build

How the cost is worked out

  1. System power: 220 W (GPU) + 130 W (CPU + rest) = 350 W total.
  2. Per session: 350 W ÷ 1000 × 8 h = 2.800 kWh × 26.11p = 73.1p.
  3. Weekly: 73.1p × 2 sessions = £1.46.
  4. Monthly: £1.46 × 52 ÷ 12 = £6.34.
  5. Annual: £1.46 × 52 = £76.03.

Same scenario — other gaming rigs

Budget PC (GTX 1660 Super): £1.02/wkHigh-end PC (RTX 4070): £1.48/wkUltra PC (RTX 4090): £2.82/wkAMD Ultra PC (RX 7900 XTX): £2.32/wk
See all 5 gaming rig costs

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.