If you taking out your old ram, and putting in new ram make sure the new ram is getting the correct voltage and timings.
Looks faulty to me. I had to return some faulty RAM recently. Do you get BSOD at all when your in Windows?
Don't recall ever hearing of them. Doesn't mean they are a bad brand per-se.
Load into desktop and see If you get a Blue screen after 15 minutes or so browsing the web, or whatever you usually do on your computer. Even so I would RMA If Memtest picks up errors. Memory errors can be such a pain.
Just out of curiosity, Is that the latest version of Memtest your running?