Intel Core i5-14400F vs Intel Core i3-14100F
TDP, sustained power draw, transient peaks, overclocking power limits, and PSU wattage impact.
| Specification | Intel Core i5-14400F | Intel Core i3-14100F |
|---|---|---|
| Brand | Intel | Intel |
| Socket | LGA1700 | LGA1700 |
| Generation | Raptor Lake Refresh | Raptor Lake Refresh |
| Core Count | 10 | 4 |
| Base TDP (PL1) | 65W | 58W |
| Sustained Power (PL2 / All-Core) | 148W | 110W |
| Transient Peak (×1.20 model) | 178W | 132W |
| Overclockable | ✓ Yes (PL2 > TDP) | ✓ Yes (PL2 > TDP) |
| MSRP | $159 | $99 |
PSU Wattage Impact
Intel Core i5-14400F adds 178W to your system's transient peak (148W sustained × 1.20 transient factor).Intel Core i3-14100F adds 132W (110W × 1.20).
When pairing with a high-end GPU (RTX 5090: 902W transient peak), the CPU transient adds 178W or 132W respectively. Note: Intel Core i5-14400F can draw up to 148W sustained under all-core boost — ensure your motherboard VRM and PSU can support this. Note: Intel Core i3-14100F can draw up to 110W sustained — account for this in your PSU budget.
Frequently Asked Questions
How much power does Intel Core i5-14400F use at full load?
Intel Core i5-14400F draws 148W sustained (PL2 / all-core boost) and can spike to 178W during transient loads. Its base TDP is 65W. For PSU calculations, always use the sustained draw (148W), not the base TDP.
How much power does Intel Core i3-14100F use at full load?
Intel Core i3-14100F draws 110W sustained and peaks at 132W. Base TDP is 58W. Use 110W in your PSU sizing calculation.
Which CPU needs a bigger PSU?
Intel Core i5-14400F requires more PSU wattage with 148W sustained vs 110W. The difference of 38W sustained matters most when combined with a high-end GPU. Use PSUCheck's full PSU calculator to get the total system recommendation.