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Gaming PC · Ofgem 1 July to 30 September 2026

AMD Ultra PC (RX 7900 XTX) electricity cost — Regular — 2 hours per session

Regular gaming habit: 2 hours most evenings, 5 days a week. A <strong>AMD Ultra PC (RX 7900 XTX)</strong> draws 555 W total (GPU 355 W + rest of system 200 W). Cost: £1.45/week at Ofgem cap 26.11p/kWh (1 July to 30 September 2026).

AMD Ultra PC (RX 7900 XTX) — Regular — 2 hours per session: 0.555 kW × 2 h = 1.110 kWh = 29.0p/session. Weekly (5 sessions): £1.45. Monthly: £6.28. Annual: £75.35. Source: Nvidia / AMD / Intel — published TDP specifications for GPU and CPU components + Ofgem (OGL v3.0).

Per session
29.0p
Per week (5 sessions)
£1.45
Per month
£6.28
Per year
£75.35

Rig specification

Tier
ultra
GPU
AMD Radeon RX 7900 XTX
GPU TDP
355 W
Rest of system
200 W
Total system
555 W
Sessions/week
5

AMD RX 7900 XTX TBP 355 W (AMD published spec); rest of system ~200 W with AMD Ryzen 9 7950X (170 W TDP) + cooling

How the cost is worked out

  1. System power: 355 W (GPU) + 200 W (CPU + rest) = 555 W total.
  2. Per session: 555 W ÷ 1000 × 2 h = 1.110 kWh × 26.11p = 29.0p.
  3. Weekly: 29.0p × 5 sessions = £1.45.
  4. Monthly: £1.45 × 52 ÷ 12 = £6.28.
  5. Annual: £1.45 × 52 = £75.35.

Same scenario — other gaming rigs

Budget PC (GTX 1660 Super): 64.0p/wkMid-range PC (RTX 3070): 91.4p/wkHigh-end PC (RTX 4070): 92.7p/wkUltra PC (RTX 4090): £1.76/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.