A gaming PC does not, by itself, tell you which electricity tariff will be cheapest. Compare tariffs using your household’s expected annual electricity use, then estimate how much your PC adds based on its actual average power draw and hours of use. Include the unit rate, standing charge, time bands, contract terms and any meter requirements in the comparison.
Compare the whole household bill, not just the PC’s power use
Electricity tariffs include a unit rate, charged for each kilowatt-hour (kWh) used, and a daily standing charge. The standing charge applies even on days when you use no electricity. Two offers with similar unit rates can therefore produce different totals, and the lowest unit rate is not necessarily the cheapest tariff for your household. Ofgem explains how unit rates and standing charges are calculated.
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Compare offers using the same estimate of your household’s annual consumption. Check the live offer for your region and payment method: rates vary by region, payment arrangement and meter type. A national average is useful context, but it is not a quote for your home. For each tariff, consider:
- Estimated annual cost at your household’s expected consumption, including the standing charge.
- Whether the tariff has one unit rate or multiple rates, and the actual time bands and peak rates.
- Whether the rate is fixed or variable, how long the offer lasts and what exit conditions apply.
- Any eligibility rules or meter requirements, including whether a smart meter is needed.
Use the prices and conditions shown for your address and circumstances rather than assuming a tariff’s advertised headline rate applies to every customer.
#1 Best Overall
- Compatible With: iBuyPower HP Dell STGAubron CyberpowerPC Lenovo Gaming Desktop PC and others 500W to 1000W Power Supply Replacement Power cord
- SPECS: 6 ft Power Cable IEC-60320 C13 to NEMA 5-15P/18AWG/125V 10A (Max) 6 feet is just the right length, neither too long nor too short, to provide a stable power source for Desktop Computers TV monitor and other small devices
- Strict Quality Control: The outer layer uses PVC material with excellent electrical insulation properties, while the inner core features pure copper wire for stronger conductivity. It offers 30% greater conductivity compared to standard AC cables
- Safety Protection: Rigorously tested and passed (UL Listed) testing, featuring bending resistance, heat resistance, flame retardance, and a long lifespan. Provides comprehensive electrical safety protection for you
- After-sales service: Enjoy a 30-day replacement or refund. Should you have any questions or concerns Please ask us. Our dedicated team is committed to providing you with friendly and efficient customer service
Estimate how much electricity your gaming PC uses
The power-supply unit’s rated wattage is not the PC’s constant electricity draw. To estimate your gaming-related use, use a reasonable average draw during representative sessions—or measure the PC at the wall—and multiply it by the hours you use it. Include the monitor or other equipment only if you want their consumption counted too.
- Find or measure the average power draw in watts during the kind of use you want to estimate. A plug-in energy monitor can measure consumption at the socket; it is an aid, not a requirement. GPUsed describes practical ways to estimate gaming-PC running costs, but it is a commercial informational guide, not an independent test.
- Convert watts to kilowatts by dividing by 1,000.
- Multiply kilowatts by hours of use to get kWh. For example, an assumed average draw of 400 W for 3 hours is 0.4 kW × 3 = 1.2 kWh. This is an illustration, not a claim about typical gaming-PC consumption.
- Multiply the resulting kWh by the tariff’s unit rate to estimate the usage cost for that session. Repeat for a representative week or year if you want a longer-term estimate.
Add the PC’s estimated usage to the household’s overall consumption profile when comparing offers. Do not assign the household’s entire daily standing charge to the PC: it is a tariff charge, not a charge based on the computer’s use.
Rank #2
- Psu power cord compatible for Thermaltake Smart,ARESGAME AGV Series Power Supply,Cooler Master MWE,Corsair RM750e 500W~1200W PSUs 3 Prong AC Power Cord Cable
- Compatible for Corsair RM750e (2023) Fully Modular Low-Noise Power Supply,CX650 80 Plus,RM1000x Fully Modular ATX Power Supply,Corsair RMX Series AGV Series 750W Power Supply
- Compatible for Seasonic FOCUS GX-650 - 650W,Redragon RGPS-850W 80,GAMEMAX 850W,Seasonic FOCUS GX-650 - 650W,ROG Thor 1200W
- What your get: 1*5FT PSU power cord, PSU not include.
Check whether a time-of-use tariff fits your gaming hours
A multi-rate tariff charges different unit rates at different times. It may be worthwhile if a substantial share of your household’s use—including gaming, heating or appliances where relevant—can take place in cheaper periods. If you mostly game during expensive peak hours, the higher rate could offset savings elsewhere.
Read the tariff’s actual schedule and compare the complete estimated household cost against single-rate alternatives. Check whether the offer requires a particular meter or has eligibility conditions. The tariff’s time bands and your household’s full pattern of use matter more than the fact that you own a gaming PC. Ofgem sets out current price-cap rates and explains single-rate and multi-rate tariffs.
Rank #3
- [8-in-1 ATX Power Supply Tester] -- Support test 20-pin ATX / 24-pin ATX / HDD (IDE) / Floppy 4-pin / PCI-e 6-pin / 4-pin / EPS 8-pin (NOTE: can not fit for PCI-e 8-pin) / SATA connectors
- [Aluminum Alloy Enclosure] -- Light and Easy to Carry, High Strength, Nice Thermal Conductivity & Corrosion Resistance
- [1.8'' LCD Screen] -- Outputted Voltages shows on the 1.8'' LCD Screen, Easy to Read ( The 1.8'' LCD Screen was Powered by 20-pin / 24-pin Connector ), Note: The Product Screen Has a Load of Scratches All Over It？Because The Screen is Easy to Scratch, We Put a Protective Film on It, If You Think It's Not Beautiful, You Can Tear It Off by Yourself
- [Beep Alarm] -- When your power supply test value is beyond normal range, the Power Supply Tester would issue a buzzer alarm, Easy to Know
- NOTE: The voltage of 20pin / 24pin connectors is displayed by the LCD Screen, as "+3.3V", "+12V1", "+5V", "-12V", "5VSB", "PG" (except "+12V2" on LCD Screen); The voltage of PCI-e 6P / 4P / EPS P8 connectors is displayed by the LCD Screen as "+12V2"
Use price-cap figures as dated context, not a bill forecast
For Direct Debit customers in England, Scotland and Wales, Ofgem’s average default-tariff electricity figures for 1 October to 31 December 2026 are 26.32 pence per kWh and a 54.83 pence daily standing charge. These are averages, not guaranteed rates for an individual household; actual rates vary by region and payment arrangement. Ofgem also notes that electricity VAT treatment changes from 1 October 2026, so costs cannot be compared directly with the previous period. See Ofgem’s regional price-cap rates for the relevant period and tariff details.
Ofgem gives £1,723 per year as the average price-cap level for a typical household using electricity and gas and paying by Direct Debit for that same quarter. It is a typical-use illustration, not a gaming-PC household forecast. The price cap limits unit rates and standing charges on qualifying default tariffs; it does not cap the total bill, which rises with consumption. Fixed tariffs are outside the cap. Details are in Ofgem’s explanation of the price cap and standing charges.
Quick Recap
Best Value
- ✅〖80 Plus Gold Certified〗Power supply 1050W with 80 Plus Gold certified, 90% or higher efficiency with lower electricity consumption.
- ✅〖Stable & Safe Output〗DC-DC structure, LLC resonance assist, 12V synchronous rectification provide stable & safe output.
- ✅〖ATX 3.0 & PCIe 5.0 Ready〗Comes with a 12VHPWR 16pin connector to provide up to 600W for power hungry Graphics card. The power supply can sustain up to 2x total power excursion and 3x GPU power excursion, fully ready for all future high performing components.
- ✅〖ARGB Lighting Control〗 ARGB SYNC with motherboard ARGB software,25 smart lighting modes with RGB memory function.
- ✅〖Ultra-quiet & Durable Fan〗The 140mm whisper-quiet fan with hydraulic bearing to maintain good heat dissipation.
Rank #4
- AUTOMATICALLY ALARM: When your power supply test value is normal range, the Power Supply Tester would issue a buzzer alarm, Easy to Know.
- WITH LED DISPLAY: We have developed a portable computer power tester for the power supply market that can judge the quality of the power supply. It has LCD display intuitive and accurate display voltage (+/ 0.01V), automatic fault alarm, complete test interface, small and beautiful appearance, and more test functions. It is your best choice and helper to quickly detect PC power.
- EASY TO USE: This power tester only needs to be connected to the power supply ATX connector to easily and intuitively know whether the output of each power supply is normal. It can detect ATX, BTX, ITX, TFX computer power supply, and can display various voltage and PG values in LCD screen to quickly detect the performance of computer power supply.
- PRACTICAL & CONVENIENCE: Small and practical power tester. Now the number of power output groups is increasing. As long as one of them has problem, the hardware of the computer system may work abnormally or even burn out. To measure whether the output voltage output of the power supply is stable, the player usually uses a multimeter. But for the average user is still a little troublesome.
- NOTE: It can also measure the output wire P4/P6/P8/SATA/IDE, and the external DIE/SATA/P6/P8 is the light display, there is no LCD voltage. There is LCD voltage display only when connecting to the 24pin or 20pin.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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