tiny voices :
Having more than enough wattage is a good thing, not a bad thing. It cannot hurt your new parts. the parts only pull the wattage they need. You could use a 1500w PSU and have no issues at all.
Your PSU is low quality and old. it should be replaced with a quality unit. What will you be using the computer for?
This is just flawed logic.
You have no real idea of the actual quality of his PS in respect of how it is going to work with his new components and the actual probability that it would actually cause any issues whatsoever. It is a PSU thats working and has more than enough reported power in the right places to run his system.
65W for his current processor
77W for the i5
His proposed MB ...
"Power consumption numbers really shocked me considering the low numbers of phases provided. I saw just 4 W drawn at idle and 54 W at load, very respectable results for a product with such a simple VRM and no MOSFET cooling!"
http://www.techpowerup.com/reviews/Gigabyte/B75M-D3H/8.html
You are talking rubbish and recommending rubbish to other people !
If he doesnt spend the money and puts it in the bank he gets the best of both worlds.
Any fool can recommend people go around buying new equipment to replace working equipment !