Paired build · data reviewed 2026-11-10
This is the current default gaming comparison: a 120 W X3D CPU and AMD's 304 W RDNA 4 card.
Gaming total 481 W. Minimum 650 W. Efficiency size 1,000 W. If both parts sit on their limits, the load is 523 W and the minimum becomes 700 W.
These open a store search for that wattage class. Prices stay on the store. Disclaimer.
| Line | Watts | Why this figure |
|---|---|---|
| Ryzen 7 9800X3D | 120 W | Default TDP 120 W, PPT 162 W |
| Radeon RX 9070 XT | 304 W | Typical Board Power 304 W |
| Motherboard allowance | 35 W | Chipset, VRM overhead, and onboard devices. |
| Memory, 2× DDR5 | 10 W | Planning allowance per module. |
| NVMe, 1 | 6 W | Active-drive allowance. |
| Fans, 3 | 6 W | Case or radiator fans. |
Ryzen 7 9800X3D base power is 120 W and the package limit is 162 W (derived).Radeon RX 9070 XT board power is 304 W.AMD publishes a system minimum of 750 W. AMD publishes this minimum on the product page and does not name the reference CPU in the specification block we transcribed.
WattWise's minimum for the gaming estimate is 650 W. The vendor figure is 100 W higher.Their number is a floor for the reference PC they named. It is not added on top of ours.
Radeon RX 9070 XT is rated 304 W. 2× 8-pin on AMD's baseline specification. The connector budget covers the rated board power.
This reference design uses 6-pin and 8-pin plugs, not 12V-2x6. Shop the continuous wattage. A PSU without a 12V-2x6 connector follows the lower ATX excursion column (150% for 100 µs on units at or under 450 W, and on larger units that omit the connector). That is still not a reason to double the label.
Power-limit ceiling for this exact pair: 523 W, minimum 700 W, efficiency size 1,200 W. That row is a combined render, not a typical game.