Quick Answer
The Core i5-14400F runs on LGA 1700, and the value pairing is a B760 board with DDR5 or DDR4; for a budget gaming build a B760 DDR5 board with a 32GB DDR5-5600 to 6000 kit is the sweet spot. You do not need a Z790 board, since the 14400F is locked and cannot overclock.
Why B760 Suits The 14400F
The 14400F is a locked, efficient mid-range chip aimed at value gaming builds. Because it cannot be overclocked, the main reason to buy a Z790 board, unlocked multipliers, does not apply. A B760 board gives you everything this CPU uses: DDR5 or DDR4 support, Gen 4 storage, and enough VRM headroom for a 65W-class chip. That makes B760 the rational, cost-effective choice.
LGA 1700 boards are widely available, and many support both DDR4 and DDR5, so you can choose based on budget and whether you have existing memory.
DDR4 Versus DDR5 And Setup
For a new build, DDR5 is the forward-looking choice and pairs well with a B760 DDR5 board; DDR4 can save money if you already own a kit. Either way, enable XMP so the RAM runs at rated speed. A modest air cooler handles the 14400F easily, and a 550-650W PSU covers the CPU with a mid-range GPU. Confirm the board's BIOS supports the chip out of the box or plan a quick update.
FAQ
Does the i5-14400F need a Z790 board?
No. The 14400F is locked and cannot overclock, so a B760 board gives you everything it uses at a lower price. Z790 would add features this CPU cannot benefit from.
Should I pair the 14400F with DDR4 or DDR5?
DDR5 for a future-proof new build; DDR4 if you want to save money or already own a kit. Many B760 boards support one or the other, so choose the board to match.
What cooler does the 14400F need?
A modest air cooler is plenty. The 14400F is an efficient 65W-class chip, so it does not require a large AIO; a good tower cooler keeps it comfortable under gaming load.
B760 board to match your memory choice, then enable XMP in BIOS. The locked 14400F gains nothing from a pricier Z790 board, so put that saving toward your GPU.