I have the Gigabyte GA-7VAXP w/a xp 2000+ cpu. my cpu temp reads 54C and system temp reads 45C at idle. Is this too hot?? I have 1 Antec fan blowing in from the front and 1 stock fan to exhaust in the back. On top of that I have the Antec PSU which has 2 fans on it. Should I upgrade the exhaust fan?, cpu heatsink/fan?, or modify my case to fit bigger fans? Or all the above? I'm kinda on a budget so I would like to know what would be the best suggestion? Thanks in advance!!