No, you cannot change the base clock on a non-K Intel CPU.
No, you cannot change the base clock on a non-K Intel CPU.
The title, basically I'm planning on getting a locked Core i5 and a B760 motherboard, will I be able to change the PL1 if sufficient cooling is provided?
The pl1 refers to a power cap, not a clock speed restriction. Several boards allow adjusting power limits on secured processors. I should also note that for many applications such as typical games, these limits won't be exceeded, meaning altering them shouldn't impact performance.
Most boards in the B- series provide access to power limits. Keep in mind, Power Limits are not the same as Base Clock—they serve different purposes. Adjusting power limits helps maintain peak performance during demanding tasks, whereas the base clock enables running at frequencies beyond official specifications. 12th generation non-K processors can support base clock tuning on certain motherboards, like the B760M PG Riptide, which tends to be the most affordable option. Generally, base clock tuning isn't available on non-K components.