That happens too. Prime 95 and other stability tests are used and can check when wrong results are returned. There's often a sliver of frequencies where a syste

That happens too. Prime 95 and other stability tests are used and can check when wrong results are returned. There's often a sliver of frequencies where a system under load begins performing floating point calculations incorrectly while other, simpler systems in the CPU are still functioning correctly. The BSOD, oops, or panic is a symptom of widespread errors.