The CX (green) aren't intended for gaming use, by any stretch of the imagination. Even Corsair states as much. So when paired with an intensive gaming load with its sudden and possibly large draws, life expectancy of a CX tends to plummet, 18 months is about average. That's why they are tier 4. Decent general purpose replacement psus, lousy gamers. Although still trying to figure out who makes a general purpose, public user pc that needs a 850w psu.