Guide
What PSU wattage the RTX 50 series actually needs
NVIDIA prints two power numbers for every RTX 50 card: total graphics power, and a required system power. The second number is a minimum for a PC with a Ryzen 9 9950X, and NVIDIA says a PCIe CEM 5.1 supply is recommended. It is not a measurement of the card alone, and it is not an efficiency target.
The table uses the same model as the calculator. The gaming column is a Ryzen 7 9800X3D at its 120 W default TDP, the card at its TGP, two DDR5 sticks, one NVMe drive, and three fans. The ceiling column is a Ryzen 9 9950X at its reported 200 W package limit together with the card at TGP. That second column is the overlap NVIDIA's reference CPU is closer to.
| Card | TGP | NVIDIA minimum | 9800X3D gaming | 9950X at the limit |
|---|---|---|---|---|
| GeForce RTX 5090 | 575 W | 1000 W | 752 W · 1,000 W | 832 W · 1,200 W |
| GeForce RTX 5080 | 360 W | 850 W | 537 W · 700 W | 617 W · 850 W |
| GeForce RTX 5070 Ti | 300 W | 750 W | 477 W · 600 W | 557 W · 700 W |
| GeForce RTX 5070 | 250 W | 650 W | 427 W · 550 W | 507 W · 650 W |
| GeForce RTX 5060 Ti | 180 W | 600 W | 357 W · 450 W | 437 W · 550 W |
| GeForce RTX 5060 | 145 W | 550 W | 322 W · 450 W | 402 W · 550 W |
| GeForce RTX 5050 | 130 W | 550 W | 307 W · 400 W | 387 W · 500 W |
The 5090 is the one that changes the shopping list
A GeForce RTX 5090 is 575 W TGP. With a 9800X3D the gaming estimate is 752 W, so the 80% minimum is 1,000 W. NVIDIA's required system power is 1000 W, written for a 9950X. Put that 9950X on its 200 W limit next to the 5090 and the total is 832 W, minimum 1,200 W. The efficiency size for the gaming estimate is 1,600 W. That is the 50% target, not a second copy of the spike.
Every RTX 50 reference design can take a 12V-2x6 cable or an 8-pin adapter. The 5090's cable rating in NVIDIA's table is 600 W. The 5080's is 450 W or greater. From the 5070 Ti down, NVIDIA's wording is 300 W or greater, or the listed 8-pin count. Seat the native cable. Do not add the 200% microsecond excursion on top of the wattage. That test is already in the ATX 3.1 spec for a supply that has the connector. The transient guide has the table.
The 5060 and 5050 do not need a 5090-sized supply
NVIDIA's own minimum for the RTX 5060 and RTX 5050 is 550 W, and that minimum still assumes a Ryzen 9 9950X. A 65 W or 120 W gaming CPU lands lower in the WattWise column. Buying 1000 W for a 145 W card because a brand calculator said so is the padding this site exists to avoid. Use the row, then open the card's guide if you want the connector sentence and the three-CPU table.
Paired pages: 9800X3D and RTX 5070, 9800X3D and RTX 5070 Ti, 9800X3D and RTX 5080, 9950X and RTX 5090.
These open a store search for that wattage class. Prices stay on the store. Disclaimer.
Source for TGP, required system power, and connectors: NVIDIA's GeForce compare table. The footnote names the Ryzen 9 9950X.