Hello Please excuse my slightly confused and newbish post! :S I am having a few problems with my new graphics card and I was wondering if someone could give me a clue as to what it is? For Xmas I asked for an upgrade and what I received was a Nvidia Geforce 9800 GT, which is very nice, but I had concerns about whether or not it would fit with my now rather out-of-date system. Surely enough after playing around with it for a couple of days I have discovered it crashes every now and again. The picture will simply freeze, the graphics appear warped or barely recognizable and I am unable to do anything other than manually shut my PC down. I am by no means knowledgeable with computers, but I had a read around and decided it might be an over-heating issue. I set the card fan to run at 80% and monitored the temperature. As it never goes above 50c I now know that wasn't the problem. What I think it may be is my lack of power. The PSU I have (I had a look at it and all I know is it was made by Dell) only provides 375 watts. I've read that you need about 550 for the card to work well as it's apparently very power-hungry, but then I've also read that the drivers are pretty poor (the one I'm using is v.180.48) and the card can crash even on a good system. So I've been left slightly confused and unsure as to what to do. Is there any way of knowing for sure if it's a lack of power, and if that is the most likely cause what kind of PSU should I be investing in that will work well? I'm worried in case I buy one and find it isn't compatible. What little info I do know about my system is this: Dell DXPO51 XP Home SP3 Intel Pentium 4 3GHz 1.5 GB RAM Thanks in advance for your time!