It will fit but i certainly wouldnt use it, its an old design with passive power factor correction, and low efficiency so its going to generate quite a bit of additional heat. A higher quality unit will last you much longer and be able to support stronger cards in the future, but will cost you a bit more but a PSU is an investment in a part you will be able to keep for 5 or more years. http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Thanks guys. I ended up buying 5770 and CoolMaster 600 watt. I love it.
another question since i don't want to start a new thread, On my Acer e380, i have AMD athlon 64 Dual core processor 4800+ 2.5 Ghz. can i just take it out and replace it with phenom http://www.newegg.com/Product/Product.aspx?Item=N82E168... right away without any problems since my motherboard supports AMD?
Regardless of what the mobo supports, you'll have to check with Acer and see what CPUs the bios supports. They write the bios, and generally only include a few for that line they plan to offer to keep cost down and planned obsolescence.
I guess i did some searching, and my current mobo
Main Circuit Board-
Board: Acer EM61SM/EM61PM
Bus Clock: 201 megahertz
BIOS: Phoenix Technologies, LTD R01-B1 12/29/2006
doesn't support AM2+ and AM3's. Now i'm really planning to get a amd mobo. Do you have any suggestion which will fit on my case because i'm totally unsure what kind of tower my case is. Thank you so much.