What PSU for a NVIDIA GeForce RTX 5070 Ti and Core i5-14600K?
Pairing a NVIDIA GeForce RTX 5070 Ti (300 W board power) with a Core i5-14600K (181 W peak) gives a system load of about 598 W. Both figures are verified against the manufacturers’ own specifications — the sources are linked below.
Recommendations are planning estimates, not electrical or purchasing advice. The hardware figures behind them are vendor-published; your exact board-partner model and build can still differ.
Recommended PSU
750 W
Leaves the supply at about 80% load under gaming.
Minimum
750 W
Smallest quality tier we would pair with this build.
System load
598 W
300 W GPU + 181 W CPU + 117 W rest of build.
GPU power connector
1× 16-pin 12V-2x6
Plus the board’s EPS 12V cable for the CPU.
Where the power goes
Load is split fairly evenly — the NVIDIA GeForce RTX 5070 Ti takes 50% of the 598 W total and the Core i5-14600K 30%. Both parts matter to the sizing, which is why the pairing is worth looking at rather than either part alone. The remaining 117 W covers the board, memory, one SSD, three fans and a USB allowance.
GPU 50% · CPU 30% · rest of build 20%
Why 750 W
The recommendation is not marginal. Standard headroom puts the requirement about 15% above a 650 W unit, which is too much to absorb — a 650 W supply would be running at roughly 92% of its rating before any peaks. 750 W is the sensible tier.
Graphics-card draw is not flat — brief peaks above the rated board power are normal, and a supply running close to its limit can trip on one. We do not publish a peak figure for the NVIDIA GeForce RTX 5070 Ti because the manufacturer does not publish one. At 300 W a quality unit of the recommended wattage copes without drama; an ATX 3.x supply is a reasonable buy but not a requirement for this build.
The card's manufacturer recommends 750 W for the NVIDIA GeForce RTX 5070 Ti, and with the Core i5-14600K our own figure lands on the same 750 W. When the two agree there is not much to argue about — buy a good 750 W unit.
Cabling this build
The NVIDIA GeForce RTX 5070 Ti takes 1× 16-pin 12V-2x6. Use the native 12V-2x6 cable that comes with an ATX 3.x supply rather than an adapter bundle, seat it until it clicks, and keep sharp bends away from the plug — a partially seated 16-pin connector is the known failure mode at this power level. On top of that the board needs its EPS 12V CPU cable — one 8-pin is enough for the Core i5-14600K at 181 W, though many boards expose a second socket you can leave empty.
Different case, more drives, or an AIO? Open the PSU Calculator with both parts pre-selected →
Figures above assume an ATX board, 2 RAM sticks, 1 SSD, 3 fans and a USB allowance, at the standard headroom profile.
Frequently asked questions
What PSU do you need for a NVIDIA GeForce RTX 5070 Ti and Core i5-14600K?
We recommend a quality 750 W power supply. The pairing draws about 598 W under load — 300 W for the card, 181 W for the CPU and 117 W for the rest of a typical build — and 750 W is the smallest tier we would pair with it.
How much power does a NVIDIA GeForce RTX 5070 Ti and Core i5-14600K build use?
About 598 W under a combined gaming load, which is roughly 80% of the 750 W supply we recommend. That is a conservative figure built from vendor-published ceilings, so day-to-day draw is usually lower.