GeForce RTX 4090 Power Consumption and Cost
450 W Total Graphics Power — about 383 W sustained in a real game, and 503 W from the wall with the rest of the machine. NVIDIA suggests a 850 W supply. 24 GB VRAM, RTX 40, 2022.
Running a GeForce RTX 4090
- System draw
- 503 W
- Per month
- $14
- Card alone / yr
- $115
- Suggested PSU
- 850 W
- Gaming hours
- Idle hours
Where the watts go
| Item | Power | Per year | Cost / year |
|---|---|---|---|
| Gaming hours | 503 W | 733.6 kWh | $142 |
| Idle hours | 70 W | 153.3 kWh | $30 |
| Whole machine | — | 886.9 kWh | $172 |
| GeForce RTX 4090 alone | 383 W | 591.3 kWh | $115 |
What 450 W means for this card
At the 85% load these figures assume, a GeForce RTX 4090 draws about 383 W in a game, and a machine built around it about 503 W from the wall. At California's average electricity price that comes to $308 a year, of which the card itself accounts for $205.
What stands out about the GeForce RTX 4090
Between the RTX 3090 and the RTX 5090.
Against the RTX 3090, a generation earlier: 100 W more rated power (450 W against 350 W), the same 24 GB of memory and about $24 more a year to run at the US average. Against the RTX 5090, a generation later: 125 W less rated power (450 W against 575 W), 8 GB less memory (24 GB against 32 GB) and about $30 less a year to run at the US average.
The second-highest rated power of the 34 cards here.
At 450 W, a machine built around the RTX 4090 costs about $172 a year to run at the US average — $81 more than one built around the lowest-rated card, the RTX 4060.
The highest-rated card in the RTX 40 range.
The next card down, the RTX 4080 SUPER, is rated 130 W lower and costs about $31 less a year to run at the US average.
The same rated power as the RTX 3090 Ti.
The RTX 4090 and the RTX 3090 Ti are both rated at 450 W, so on these figures a machine built around either costs exactly the same to run.
Room for 16 of the 20 open models in the local-LLM dataset.
With Q4_K_M weights and an 8K context, its 24 GB holds models up to Qwen2.5 32B. The local-LLM page for the RTX 4090 covers every model at every quantisation and context length.
Some builds need more than the 850 W supply NVIDIA suggests.
Paired with the Core i9-14900K, the whole build calls for 1,000 W; 10 of the 26 processors in the RTX 4090 PSU table take the requirement above 850 W.
Running cost by state
| State | Cents / kWh | Per month | Per year whole machine | Card alone |
|---|---|---|---|---|
| Nevada | 13.11 | $10 | $116 | $78 |
| Nebraska | 13.25 | $10 | $118 | $78 |
| Utah | 13.37 | $10 | $119 | $79 |
| Louisiana | 13.49 | $10 | $120 | $80 |
| Tennessee | 14.07 | $10 | $125 | $83 |
| Arkansas | 14.12 | $10 | $125 | $83 |
| North Dakota | 14.12 | $10 | $125 | $83 |
| Kentucky | 14.26 | $11 | $126 | $84 |
| Oklahoma | 14.33 | $11 | $127 | $85 |
| Idaho | 14.37 | $11 | $127 | $85 |
| North Carolina | 14.74 | $11 | $131 | $87 |
| Mississippi | 14.88 | $11 | $132 | $88 |
| Washington | 14.91 | $11 | $132 | $88 |
| New Mexico | 15.06 | $11 | $134 | $89 |
| Florida | 15.10 | $11 | $134 | $89 |
| Montana | 15.14 | $11 | $134 | $90 |
| Arizona | 15.18 | $11 | $135 | $90 |
| Wyoming | 15.24 | $11 | $135 | $90 |
| South Dakota | 15.36 | $11 | $136 | $91 |
| West Virginia | 15.45 | $11 | $137 | $91 |
| South Carolina | 15.55 | $12 | $138 | $92 |
| Kansas | 15.71 | $12 | $139 | $93 |
| Iowa | 15.93 | $12 | $141 | $94 |
| Texas | 15.94 | $12 | $141 | $94 |
| Missouri | 16.22 | $12 | $144 | $96 |
| Oregon | 16.32 | $12 | $145 | $97 |
| Georgia | 16.36 | $12 | $145 | $97 |
| Alabama | 16.40 | $12 | $145 | $97 |
| Colorado | 17.13 | $13 | $152 | $101 |
| Virginia | 17.22 | $13 | $153 | $102 |
| Indiana | 17.51 | $13 | $155 | $104 |
| Minnesota | 17.52 | $13 | $155 | $104 |
| Ohio | 19.19 | $14 | $170 | $113 |
| Delaware | 19.29 | $14 | $171 | $114 |
| Wisconsin | 19.56 | $14 | $173 | $116 |
| Illinois | 19.89 | $15 | $176 | $118 |
| Pennsylvania | 21.73 | $16 | $193 | $128 |
| Maryland | 21.84 | $16 | $194 | $129 |
| Michigan | 22.99 | $17 | $204 | $136 |
| Connecticut | 24.32 | $18 | $216 | $144 |
| District of Columbia | 24.39 | $18 | $216 | $144 |
| Vermont | 24.44 | $18 | $217 | $145 |
| New Jersey | 24.95 | $18 | $221 | $148 |
| New Hampshire | 27.01 | $20 | $240 | $160 |
| Alaska | 28.21 | $21 | $250 | $167 |
| Rhode Island | 29.23 | $22 | $259 | $173 |
| New York | 29.49 | $22 | $262 | $174 |
| Maine | 29.59 | $22 | $262 | $175 |
| Massachusetts | 29.61 | $22 | $263 | $175 |
| California | 34.74 | $26 | $308 | $205 |
| Hawaii | 52.72 | $39 | $468 | $312 |
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
| Card | TGP | Suggested PSU | Per year US average | In California |
|---|---|---|---|---|
| GeForce RTX 4080 SUPER | 320 W | 750 W | $141 | $252 |
| GeForce RTX 4080 | 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 4090
NVIDIA suggests an 850 W power supply. Across the 26 processors in the PSU calculator, a build with this card needs 850 W with the Ryzen 5 9600X and up to 1,000 W with the Core i9-14900K.
Frequently asked questions
How much power does the GeForce RTX 4090 use?
How much does it cost to run a GeForce RTX 4090?
What power supply does a GeForce RTX 4090 need?
Do idle hours matter?
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 . How these figures are calculated