I'm looking to build a new system, the first one for years. It will run XP/Pro. Is there any downside to the following kit? CPU AMD Athlon X2 4450e 2.3GHz 1MB L2 Cache Socket AM2 () [URL]http://www.newegg.com/Product/Product.aspx?Item=N82E16819103256[/URL] MOBO BIOSTAR TForce TA780G M2+HP AM2+/AM2 AMD 780G Micro ATX AMD Motherboard [URL]http://www.biostar.com.tw/app/en-us/t-series/content.php?S_ID=344[/URL] MEMORY Kingston 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1066 (PC3 8500 [URL]http://www.newegg.com/Product/Product.aspx?Item=N82E16820134793[/URL] With 3 SATA drives and a DVD burner, what wattage of a PSU do people recommend?