Thanks !
I'm using Crucial memory -
Newegg.com - Crucial 4GB 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Desktop Memory Model CT51264BA1339
It's good to know what the source of the problem probably is.
Sounds like I maybe need to run Memtest.
Is Memtest enough or do I need to buy some new memory ? Speaking of Mushkin, I found this Mushkin Blackline in 2 speeds.
Mushkin 2133
Newegg.com - Mushkin Enhanced Blackline 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2133 (PC3 17000) Desktop Memory Model 997015
Mushkin 1600
Newegg.com - Mushkin Enhanced Blackline 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model 996995
I like Mushkin too, I have some DDR 400 2-2-2-5 in an old 3 GHz P4 system that runs great and which I refuse to sell or de-commission.
Getting back to the MB, I might have gotten the Asus P9X79 Pro, the one Anandtech recommended about a year ago -
AnandTech - Sandy Bridge-E and X79
Seems like a great MB, and I have been using Asus since around 1994.