12th Gen · data reviewed 2026-11-10

What PSU for the Core i3-12100?

Core i3-12100 is 4 cores and 8 threads on LGA 1700. Gaming plans it at 60 W (Processor Base Power). The power-limit profile uses 89 W (Maximum Turbo Power, published). With a Radeon RX 9070 XT, the gaming total is 421 W and the minimum size is 550 W.

These open a store search for that wattage class. Prices stay on the store. Disclaimer.

Same CPU, three graphics cards

Each row is two memory modules, one NVMe drive, and three fans. Only the GPU changes, so the difference between rows is the card plus nothing else.

WattWise results for the Core i3-12100
GPUBoard powerGaming loadMinimumBoth at the limit
GeForce RTX 5060145 W262 W400 W291 W · 400 W
Radeon RX 9070 XT304 W421 W550 W450 W · 600 W
GeForce RTX 5090575 W692 W1,000 W721 W · 1,000 W

How to read the two CPU numbers

Maximum Turbo Power as published on the Intel ARK specification for this SKU. It is an all-core turbo limit, not a typical gaming draw.

Memory in this table is DDR5, which this CPU can also run as DDR4. Switching to DDR4 drops the per-stick allowance from 5 W to 3 W.

The GeForce RTX 5060 row is the small-card case: the CPU and the platform are a large share of the total. The GeForce RTX 5090 row is the flagship case: the graphics card dominates, and the CPU's base-versus-limit gap matters less until you render on every core.

Questions for this CPU

What PSU does a Core i3-12100 need with a Radeon RX 9070 XT?

Gaming plan for the Core i3-12100: 60 W at its processor base power, 304 W for the Radeon RX 9070 XT at rated board power, and 57 W of platform allowance. The total is 421 W. Minimum size 550 W. Efficiency size 850 W.

How much does the Core i3-12100 add when the GPU is small?

With a GeForce RTX 5060, the gaming total is 262 W and the minimum is 400 W. The same CPU with a GeForce RTX 5090 is 692 W, minimum 1,000 W. The CPU did not change. The graphics card did.

Should I size a Core i3-12100 build for the package limit?

The power-limit profile with a Radeon RX 9070 XT is 450 W, minimum 600 W. That is both parts on their limits at once. Maximum Turbo Power 89 W is printed by the vendor. Use it for a combined render. A GPU-bound game is the lower row.

Nearby CPUs

Sources

All CPUs · Compare two GPUs · Methodology