On Mon, Jul 6, 2015, 12:11 AM Heinz Diehl <htd+ml@fritha.org> wrote:

On 03.07.2015, Chris Murphy wrote:

> And after that, over the weekend if you can afford to be without the
> use of this computer, run memtest86+ as long as you can stand it.
> Sometimes it takes days for problems to show up.

Most often, mprime95 is a better alternative and fails within a short
amount of time in case of failing RAM or heat problems:
http://www.mersenne.org/download/

One full hour with each of the three stress-tests (respectively) will usually
suffice.

The description days it can be used to stress test the CPU including on board caches. It doesn't say it's a memory tester. The reason it can take a long time for memtest to find a defect is that sometimes they produce only intermittent error.

Chris Murphy