Hello, I was going to purchase a SAPPHIRE 100314-3L Radeon HD 6850 1GB 256-bit GDDR5 PCI Express 2.1 x16 HDCP Ready CrossFireX Support Video Card that was before I went on newegg (where I was going to purchase it) and read all the reviewers they talked about how it was crashing a lot?...I don't want to crash every 10 minutes gaming, or watching videos. On a review the guy talked about how you had to unlock your RAM/CPU if someone knows what that means cause I don't then that'd be cool, also if someone believes it's necessary then can someone recommend me a similar PSU with a very low failure rate.