A quick MemTest86 pass is enough for most RAM upgrades.

Yes, one pass of MemTest86 will catch the vast majority of stability issues. You don’t need to run it for 24 hours unless you’re overclocking or you already suspect the hardware is bad.

Modern RAM sticks are tested at the factory. Most instability is either a seating issue (reseat the stick) or a bad stick (a quick pass finds that). XMP/DOCP profiles are pre-validated by the manufacturer — if they work in your system at all, they’re usually fine.

The 24-hour stress test advice comes from the overclocking world where you’re pushing past spec. For a standard soldered or DIMM upgrade at rated speeds, that’s overkill. You’d waste a