Nothing wrong with using what you paid for.
Did you make the BIOS adjustments?
Is it stable?
I made the adjustments. Ran the test, and I THINK it closed itself after it was done. [All I know is it didn't reboot]
This morning, I had a IE crash while playing a flash game that I play often, and don't remember a crash...
Stability is kinda Pot-Luck. I RARELY have a crash on the day it's booted...
Did you test with OCCT?
It makes a loud noise if it fails, hard to miss unless you are away from your computer.
Not sure if it will close itself after a certain time, as I usually keep a watch on stability tests.
Look in C drive > Users > (your user name) > My Documents > OCCT for the graphs it generates.
Post them all here.
For posting the information , enter 'Snipping tool' in the Start button > Search box, hit enter. Select the area you want to post and save to a convenient place.
How to Post a Screenshot in Seven Forums
Post the CPUZ 'Memory' and 'SPD' tabs.
One pass of memtest86+ won't tell you much, better to install the RAM and see if it will boot.
Is your BIOS still set to run the RAM at 800MHz (actual 1600MHz)?