GeForce RTX 4080 Power Consumption and Cost

320 W Total Graphics Power — about 272 W sustained in a real game, and 392 W from the wall with the rest of the machine. NVIDIA suggests a 750 W supply. 16 GB VRAM, RTX 40, 2022.

Running a GeForce RTX 4080

$141 a year in electricity

System draw: 392 W
Per month: $12
Card alone / yr: $84
Suggested PSU: 750 W

Gaming hours
Idle hours

Where the watts go

Power and running cost breakdown for a GeForce RTX 4080
Item	Power	Per year	Cost / year
Gaming hours	392 W	572.3 kWh	$111
Idle hours	70 W	153.3 kWh	$30
Whole machine	—	725.6 kWh	$141
GeForce RTX 4080 alone	272 W	430.0 kWh	$84

What 320 W means for this card

At the 85% load these figures assume, a GeForce RTX 4080 draws about 272 W in a game, and a machine built around it about 392 W from the wall. At California's average electricity price that comes to $252 a year, of which the card itself accounts for $149.

What stands out about the GeForce RTX 4080

Between the RTX 3080 and the RTX 5080.
Against the RTX 3080, a generation earlier: 30 W less rated power (320 W against 350 W), 4 GB more memory (16 GB against 12 GB) and about $7 less a year to run at the US average. Against the RTX 5080, a generation later: 40 W less rated power (320 W against 360 W), the same 16 GB of memory and about $10 less a year to run at the US average.
Less memory than the closest AMD card by rated power.
The RX 7900 XT is rated at 315 W to this card's 320 W, but carries 20 GB of graphics memory against the RTX 4080's 16 GB.
Some builds need more than the 750 W supply NVIDIA suggests.
Paired with the Core i9-14900K, the whole build calls for 800 W; 6 of the 26 processors in the RTX 4080 PSU table take the requirement above 750 W.

Running cost by state

GeForce RTX 4080 running cost in every US state
State	Cents / kWh	Per month	Per year whole machine	Card alone
Nevada	13.11	$8	$95	$56
Nebraska	13.25	$8	$96	$57
Utah	13.37	$8	$97	$57
Louisiana	13.49	$8	$98	$58
Tennessee	14.07	$9	$102	$61
Arkansas	14.12	$9	$102	$61
North Dakota	14.12	$9	$102	$61
Kentucky	14.26	$9	$103	$61
Oklahoma	14.33	$9	$104	$62
Idaho	14.37	$9	$104	$62
North Carolina	14.74	$9	$107	$63
Mississippi	14.88	$9	$108	$64
Washington	14.91	$9	$108	$64
New Mexico	15.06	$9	$109	$65
Florida	15.10	$9	$110	$65
Montana	15.14	$9	$110	$65
Arizona	15.18	$9	$110	$65
Wyoming	15.24	$9	$111	$66
South Dakota	15.36	$9	$111	$66
West Virginia	15.45	$9	$112	$66
South Carolina	15.55	$9	$113	$67
Kansas	15.71	$10	$114	$68
Iowa	15.93	$10	$116	$68
Texas	15.94	$10	$116	$69
Missouri	16.22	$10	$118	$70
Oregon	16.32	$10	$118	$70
Georgia	16.36	$10	$119	$70
Alabama	16.40	$10	$119	$71
Colorado	17.13	$10	$124	$74
Virginia	17.22	$10	$125	$74
Indiana	17.51	$11	$127	$75
Minnesota	17.52	$11	$127	$75
Ohio	19.19	$12	$139	$83
Delaware	19.29	$12	$140	$83
Wisconsin	19.56	$12	$142	$84
Illinois	19.89	$12	$144	$86
Pennsylvania	21.73	$13	$158	$93
Maryland	21.84	$13	$158	$94
Michigan	22.99	$14	$167	$99
Connecticut	24.32	$15	$176	$105
District of Columbia	24.39	$15	$177	$105
Vermont	24.44	$15	$177	$105
New Jersey	24.95	$15	$181	$107
New Hampshire	27.01	$16	$196	$116
Alaska	28.21	$17	$205	$121
Rhode Island	29.23	$18	$212	$126
New York	29.49	$18	$214	$127
Maine	29.59	$18	$215	$127
Massachusetts	29.61	$18	$215	$127
California	34.74	$21	$252	$149
Hawaii	52.72	$32	$383	$227

4 h gaming and 6 h idle a day, at 85% load with 120 W of system overhead.

The rest of the RTX 40 range

Other RTX 40 cards compared
Card	TGP	Suggested PSU	Per year US average	In California
GeForce RTX 4090	450 W	850 W	$172	$308
GeForce RTX 4080 SUPER	320 W	750 W	$141	$252
GeForce RTX 4070 Ti SUPER	285 W	700 W	$133	$237
GeForce RTX 4070 Ti	285 W	700 W	$133	$237
GeForce RTX 4070 SUPER	220 W	650 W	$117	$209
GeForce RTX 4070	200 W	650 W	$112	$200
GeForce RTX 4060 Ti	165 W	550 W	$104	$185
GeForce RTX 4060	115 W	550 W	$92	$164

Building around the GeForce RTX 4080

NVIDIA suggests a 750 W power supply. Across the 26 processors in the PSU calculator, a build with this card needs 750 W with the Ryzen 5 9600X and up to 800 W with the Core i9-14900K.

Frequently asked questions

How much power does the GeForce RTX 4080 use?

Its Total Graphics Power is 320 W, which is the limit rather than the average. At a realistic 85% sustained load a demanding game pulls around 272 W from the card, and roughly 392 W from the wall once the rest of the machine is counted. NVIDIA recommends a 750 W power supply.

How much does it cost to run a GeForce RTX 4080?

At the US average of 19.42 cents per kWh, 4 hours of gaming and 6 idle hours a day works out at about $252 a year for the whole machine in California, $95 in Nevada and $383 in Hawaii. The card's own share of that is roughly $149.

What power supply does a GeForce RTX 4080 need?

NVIDIA recommends 750 W. The card plus a mainstream system peaks around 440 W, so that recommendation leaves about 310 W of headroom — deliberate, because transient spikes on modern cards briefly exceed the rated limit.

Do idle hours matter?

More than most people expect. A PC left on but not gaming still draws roughly 70 W whatever card is installed, so the idle bill is flat while the gaming one is not. Over 6 hours a day that is $53 a year in California. On a GeForce RTX 4080 it takes 22.4 idle hours to cost as much as 4 hours of gaming — more than fits in a day, so on this card gaming always dominates.

Power figures: nvidia.com GeForce specifications (Total Graphics Power). Electricity: EIA Electric Power Monthly Table 5.6.A, residential, June 2026.

Estimates for informational purposes only. Total Graphics Power is a power limit, not an average: real draw depends on the game, resolution, frame cap, board partner design and any factory overclock. Electricity prices are state residential averages and your tariff will differ.

Data on this page last verified 26 August 2026. How these figures are calculated