I just purchased this card online and read in the manual it says it requires atleast 300-350 watts of power. My system has 250. Do I need to buy a new PSU?
HP a220n, 2.08ghz, 1gig of ram, 120gb hd internal, 40gb hd internal, 200gb hd external, creative audigy 2 value, hauppauge 250btv tv tuner, dvd-rom, dvd-rw drives.
You'll probably be alright. Those video cards aren't too powerful. I'd say don't worry about it right away. Give it a go and if you begin to have problems, then go for a new power supply... I know plenty of 300-400 watt PSU that are no better than 250 watt ones...
In my opinion you need a new power supply.
but get a decent one.... i have a crappy 450 W PSU and i'm having problems with it sometimes
it's up to you anyways