Not not really damage anything except for over work the power supply. Mostly when you dont have enough wattage certain devices will not get power. But if I was you I would jump on www.newegg.com
and get a decent 400watt for around 20-25$. Yeah amd is cheaper, but for the longest time their benchmarks have been lower, and most software manufacturers are pro intel chipsets and cpus. A do have to say tho again AMD has stepped it up in the last year or so, so who knows what the future may hold. Yea i was in AKA for a while, technically still am, but inactive, one of the older members bout year and half almost 2 years, so don't really know the manner of the players now lol.