electronics · 450W typical

Running a gaming pc (high-end) costs about $6.68/month.

That's the typical gaming pc (high-end) at 450W, run 3 hours a day at the US-average rate of 16.5¢/kWh. Change any of those and the number moves — use the calculator below to see yours.

Estimated cost

$6.68/month

$0.22 per day$81.30 per year40.5 kWh monthly

Wattage

Hours / day

Your rate

Full-power draw for 3 hours at 16.5¢/kWh.

How you use it

Cost shifts with how long it's on.

The same gaming pc (high-end) can cost very different amounts depending on usage patterns. Three common scenarios, at the US-average rate.

gaming session

$6.68

per month

active GPU-load gaming

3 hrs/day·$81.30/yr

browsing/work

$8.91

per month

non-gaming use

4 hrs/day·$108.41/yr

idle/sleep

$37.87

per month

idle desktop draws 80-120W unless sleeping

17 hrs/day·$460.72/yr

Where you live

$12.11 spread between the cheapest and priciest states.

Same appliance, same hours of use, different zip code — the monthly cost varies this much.

State	Rate	Monthly	Yearly
Hawaii	41.2¢	$16.69	$203.01
California	31.4¢	$12.72	$154.72
Massachusetts	30.8¢	$12.47	$151.77
Connecticut	28.7¢	$11.62	$141.42
Rhode Island	27.9¢	$11.30	$137.48
New Hampshire	24.6¢	$9.96	$121.22
Alaska	24.3¢	$9.84	$119.74
New York	22.3¢	$9.03	$109.88
Maine	22.1¢	$8.95	$108.90
Vermont	21.5¢	$8.71	$105.94
Michigan	19.3¢	$7.82	$95.10
New Jersey	19.1¢	$7.74	$94.12
Maryland	18.4¢	$7.45	$90.67
Pennsylvania	18.1¢	$7.33	$89.19
District of Columbia	17.8¢	$7.21	$87.71
Wisconsin	17.4¢	$7.05	$85.74
Delaware	17.2¢	$6.97	$84.75
Illinois	16.9¢	$6.84	$83.27
Ohio	16.6¢	$6.72	$81.80
Nevada	16.3¢	$6.60	$80.32
Indiana	15.8¢	$6.40	$77.85
Virginia	15.7¢	$6.36	$77.36
Minnesota	15.6¢	$6.32	$76.87
Colorado	15.4¢	$6.24	$75.88
Alabama	15.2¢	$6.16	$74.90
West Virginia	15.2¢	$6.16	$74.90
Florida	15.1¢	$6.12	$74.41
New Mexico	14.8¢	$5.99	$72.93
Texas	14.8¢	$5.99	$72.93
Arizona	14.7¢	$5.95	$72.43
South Carolina	14.7¢	$5.95	$72.43
Kansas	14.6¢	$5.91	$71.94
Georgia	14.2¢	$5.75	$69.97
Iowa	14.1¢	$5.71	$69.48
North Carolina	13.9¢	$5.63	$68.49
Missouri	13.6¢	$5.51	$67.01
Oregon	13.4¢	$5.43	$66.03
Tennessee	13.3¢	$5.39	$65.54
Kentucky	13.2¢	$5.35	$65.04
Mississippi	13.1¢	$5.31	$64.55
Oklahoma	13.1¢	$5.31	$64.55
South Dakota	12.7¢	$5.14	$62.58
Montana	12.4¢	$5.02	$61.10
Nebraska	12.2¢	$4.94	$60.12
Arkansas	12.1¢	$4.90	$59.62
Washington	12.1¢	$4.90	$59.62
Louisiana	11.9¢	$4.82	$58.64
Wyoming	11.6¢	$4.70	$57.16
North Dakota	11.5¢	$4.66	$56.67
Utah	11.4¢	$4.62	$56.17
Idaho	11.3¢	$4.58	$55.68

Efficient vs. inefficient

A $135.51/year difference across the wattage range.

Swapping a high-draw model for an efficient one pays for itself. Here's what that looks like annually at typical usage.

Most efficient

100W

$1.49 per month

$18.07 per year

Typical

450W

$6.68 per month

$81.30 per year

High draw

850W

$12.62 per month

$153.57 per year

When it hits hardest

winter peak

Heavier winter/holiday gaming.

Ways to cut the cost

1
Cap framerate at monitor refresh (e.g., 144fps) — prevents GPU running at max unnecessarily
Cuts GPU watts 30-40%
2
Use undervolting utilities (MSI Afterburner) on GPU
Saves 10-20% with no performance loss
3
Enable sleep mode instead of leaving on for streaming/downloads
Save 2-4 kWh per idle day

Real-world wattages

Pulled from actual spec sheets.

Brand	Model	Watts
NVIDIA	RTX 4080 system (i7 build)	500W
NVIDIA	RTX 4060 mid-range build	350W
AMD	Ryzen 7 + RX 7800 XT build	480W

Picks that actually move the needle

Three products worth comparing if you're thinking about upgrading or supplementing what you have.

Some links below are affiliate links. If you buy, we may earn a small commission — it never changes the price you pay, and we only recommend picks we would stand behind.

Kill A Watt P3 P4460 Meter

Critical for understanding actual gaming watts

$28-35

PSU Upgrade to 80 Plus Gold Rated

Higher-efficiency PSU saves 10-15% total system draw

$130-180

Smart Surge Protector with Auto-Shutdown

Kills monitor/RGB peripherals when PC sleeps

$40-60