Intel Core i9-13900K vs Intel Core i7-13700K
TDP, sustained power draw, transient peaks, overclocking power limits, and PSU wattage impact.
| Specification | Intel Core i9-13900K | Intel Core i7-13700K |
|---|---|---|
| Brand | Intel | Intel |
| Socket | LGA1700 | LGA1700 |
| Generation | Raptor Lake | Raptor Lake |
| Core Count | 24 | 16 |
| Base TDP (PL1) | 125W | 125W |
| Sustained Power (PL2 / All-Core) | 253W | 253W |
| Transient Peak (×1.20 model) | 304W | 304W |
| Overclockable | ✓ Yes (PL2 > TDP) | ✓ Yes (PL2 > TDP) |
| MSRP | $349 | $279 |
PSU Wattage Impact
Intel Core i9-13900K adds 304W to your system's transient peak (253W sustained × 1.20 transient factor).Intel Core i7-13700K adds 304W (253W × 1.20).
When pairing with a high-end GPU (RTX 5090: 902W transient peak), the CPU transient adds 304W or 304W respectively. Note: Intel Core i9-13900K can draw up to 253W sustained under all-core boost — ensure your motherboard VRM and PSU can support this. Note: Intel Core i7-13700K can draw up to 253W sustained — account for this in your PSU budget.
Frequently Asked Questions
How much power does Intel Core i9-13900K use at full load?
Intel Core i9-13900K draws 253W sustained (PL2 / all-core boost) and can spike to 304W during transient loads. Its base TDP is 125W. For PSU calculations, always use the sustained draw (253W), not the base TDP.
How much power does Intel Core i7-13700K use at full load?
Intel Core i7-13700K draws 253W sustained and peaks at 304W. Base TDP is 125W. Use 253W in your PSU sizing calculation.
Which CPU needs a bigger PSU?
Intel Core i9-13900K requires more PSU wattage with 253W sustained vs 253W. The difference of 0W sustained matters most when combined with a high-end GPU. Use PSUCheck's full PSU calculator to get the total system recommendation.