I tested my RAM using Memtest86+ last night and this was my first time using version 5.01. There is one thing I would like to note about this release.
It seems there is a bug with v5.01 with regards to the newly introduced Multi-Core (SMT) testing. This is a feature designed to dramatically speed up test times by using all the cores of the CPU. Normally, memtest86+ only uses a single core, which makes it quite slow. By using the many cores available in modern processors it can cut this time.
To enable this SMT mode, press the
F2 key within a few seconds of booting into Memtest. If you do not press this, Memtest will resort to 'Fail-Safe' mode, where it will work the same as it always has.
However, this new feature has an issue. It seems to crash whilst performing Test #7. Whilst this doesn't affect all systems, users are reporting it to affect quite a few. There are a few posts on the memtest forum:
Memtest86+ is freezing while running test #7
memtest86+ 5.01 shutdown w forced multithread around start of test 7
False positives given whilst running in SMT -
v5.01 gives errors in multi thread mode, but not in default mode
So I recommend
NOT using SMP mode until a fix is made. Just let Memtest run as normal.
Stephen