How Much Does It Cost to Run a Gaming PC?
A gaming PC costs about 8¢ an hour under load and $121 a year at four hours a day. Compare against consoles, laptops and office desktops.
A gaming PC drawing 450 W under load costs about 8¢ an hour, 33¢ a day at four hours of play, and roughly $121 a year at the US average rate of 18.44¢/kWh. A high-end build with a 350 W graphics card pushes that past $200.
The figure people usually quote is their power supply's rating, which is not what the machine draws. An 850 W PSU is a ceiling, not a consumption figure — a system with one typically pulls 350–550 W while gaming and 60–90 W sitting at the desktop.
- Per month
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- Per day used
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- kWh / year
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Cost by build and by use
| Device | Watts | Duty | kWh/yr | Cost/yr |
|---|---|---|---|---|
| Crypto mining rig | 1,500 W | 100% | 13,140 | $2,423 |
| Gaming PC | 450 W | 100% | 657 | $121 |
| Game console | 150 W | 100% | 164 | $30.2 |
| Desktop PC (office use) | 120 W | 100% | 240 | $44.3 |
| Laptop | 60 W | 100% | 120 | $22.1 |
| OLED TV (65") | 130 W | 100% | 237 | $43.7 |
| Build | Under load | Per hour | 4 hr/day, per year |
|---|---|---|---|
| Entry (integrated / low-end GPU) | 180 W | 3.3¢ | $48 |
| Mid-range (xx60-class GPU) | 330 W | 6.1¢ | $89 |
| High-end (xx70/xx80-class) | 450 W | 8.3¢ | $121 |
| Enthusiast (xx90-class, OC) | 700 W | 12.9¢ | $188 |
Leaving it on: the cost of idle
Most gaming PCs spend far more hours idle than gaming, and idle draw is where the surprise usually lives.
| State | Typical draw | Cost per year if left 20 hr/day |
|---|---|---|
| Gaming | 450 W | $606 |
| Desktop idle | 75 W | $101 |
| Sleep | 5 W | $7 |
| Shut down (PSU on) | 2 W | $3 |
Sleep is the whole answer here. Modern systems wake in a second or two, and the difference between idle and sleep is about fourteen times.
Game consoles in rest or instant-on mode can draw 10–25 W around the clock to stay ready for downloads and quick resume — $16 to $40 a year to save a few seconds of boot time. The setting is usually buried under power or energy options.
Annual cost by state
| State | Rate | Cost | vs US avg | |
|---|---|---|---|---|
| Idaho | 12.35¢ | $81.1 | −40.0 | below average |
| Texas | 16.44¢ | $108 | −13.1 | below average |
| Florida | 15.17¢ | $99.7 | −21.5 | below average |
| Ohio | 19.52¢ | $128 | +7.10 | near average |
| Pennsylvania | 21.55¢ | $142 | +20.4 | above average |
| New York | 29.93¢ | $197 | +75.5 | above average |
| California | 33.25¢ | $218 | +97.3 | above average |
| Hawaii | 52.00¢ | $342 | +220 | above average |
Cutting the cost without losing frames
- Cap your frame rate. The single most effective change. If your monitor is 144 Hz, rendering 300 fps is heat and electricity for frames you cannot see. An in-game or driver-level cap at your refresh rate commonly cuts GPU draw 20–40% with zero visible difference.
- Turn on V-Sync or a frame limiter in menus. Menu screens are notorious for running uncapped at hundreds of frames per second.
- Undervolt the GPU. Modern cards ship with conservative voltage. A careful undervolt typically holds 95–98% of performance for 15–25% less power, and runs quieter and cooler.
- Enable sleep after 15 minutes. Worth about $94 a year on its own.
- Do not buy a bigger PSU for efficiency. A PSU draws what the system needs. An oversized unit does not save power and often runs slightly outside its most efficient load band.
In a heated home in winter, a gaming PC is not really costing you its full electricity price — every watt it draws becomes heat your heating system no longer has to supply. If you heat with electric resistance, gaming is genuinely close to free heat. If you heat with gas, it is more expensive heat than your furnace makes. In summer with the AC on, you pay twice: once for the PC, again to remove its heat.
Frequently asked questions
How much does it cost to run a gaming PC for 8 hours?
About 66¢ at the US average of 18.44¢/kWh for a 450 W system. In California the same eight hours costs about $1.20.
Does a gaming PC use a lot of electricity?
Compared to other electronics, yes — a gaming PC under load draws more than a refrigerator, a TV and a games console combined. Compared to heating, cooling or water heating, it is small. At four hours a day it typically adds $10 a month.
Is it cheaper to leave my PC on or turn it off?
Sleep is nearly as cheap as off and far more convenient — about 5 W against 2 W. Leaving it awake at the desktop costs roughly fourteen times more than sleep. There is no meaningful wear argument against sleeping a modern PC.
How much does an 850W power supply cost to run?
Not 850 W's worth. A PSU's rating is its maximum output, not its draw. A system with an 850 W unit typically pulls 350–550 W while gaming. Measure with a plug-in meter if you want your real number.
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