I'm getting a GeForce 8400 gs, and a 380W power supply. The graphics card says "Minimum recommended power supply with +12 Volt current rating of 18 Amp Amps." I looked over the power supply specs, and none of the 12v outputs have an amp rating of 18. I read somewhere though that you have to combine the rails to add up to the amp rating? I assume that's for high end graphics cards, where you have to plug the psu directly into the card. I don't know what a rail is, I don't know how it would work for this graphics card, since it doesn't seem to require the psu to plug into it directly, Iz confoosed. I am basically clueless when it comes to power supplies, so can someone please educate me in this, and PLEASE be mindful of how you explain it because like I said, I'm almost clueless about this stuff. Taking a couple more minutes to throughly explain this to me so I understand it well, won't kill you. I don't want to sound rude when I say this, but it annoys me when people do this to me. I honestly don't care what graphics card or power supply you have, if it's better than mine and you think I should get it. I am well aware that there are graphics cards, and power supplies, that are WAY better than the ones I chose. I chose these pieces of hardware because of my budget.