3 Things to Know About Running MemTest86

One full pass catches most serious errors A single pass takes 30–90 minutes and is enough to detect obvious failures like bad modules or incorrect timings.

A single pass is sufficient for new hardware from reputable brands If you just want to confirm your kit isn’t dead-on-arrival, one pass gives you reasonable confidence without wasting time.

Run multiple passes only for overclocking, mixed sticks, or existing crashes In those cases, let it run overnight. For a standard install, one pass is enough to avoid chasing phantom crashes later.