Quote: "3 gig DDR2 dual channel memory"
umm, 3? Either you have two 1.5GB sticks or you have a 1GB that isn't running dual channel
Quote: "You're looking at around 200 for a graphics card alone, and that won't be exactly high end"
I beg to differ. $200 can get you a very capable graphics card. Even $100 can get a decent card, way more than enough to handle WoW and stuff. I'm not familiar with the games he listed though.
Quote: "I'd also suggest a 650W PSU, just to be sure ( though those 28nm GPU's should use alot less, you can never be sure"
Suggest based on what? Without specs you can't say he needs any certain amount. And you can be fairly certain, most GFX cards state a minimum PSU requirement.
Quote: "Building a PC would be far cheaper and easier"
I would argue that for a budget PC. It's not impossible, but for a budget system it's difficult to build one that matches a $300 price tag of big companies.
Quote: "so buy better than what you need and when you buy a new rig which needs more juice, you have a PSU to go"
Which leaves your old system inoperable and your new system with an old used PSU. I only use a 430w PSU, but then my components were specifically chosen for lower power consumption than usual.
Quote: "And higher Wattage PSU's often have better AMPerage"
Which is important to consider for certain graphics cards, so valid point indeed.
Quote: "So you would rather get a threaded dualcore than a sixcore for the same price?!"
For gaming, I would go with the higher clock speed rather than worry about who has the most cores that won't be used.
Quote: "I completely dissagree with the AMD stuff"
I prefer Intel myself, but why would you completely disregard AMD? They make a perfectly capable CPU, especially if price is a big concern.
Quote: "I was planning to buy then intel i7 is that one any good?"
Umm yea the i7 pretty much dominates the market right now, but it's also around $300. That's almost your whole budget right there.
Quote: "I have an pretty old video card (gts250) and I still need minimum 550Watts."
And several newer, more powerful cards require less than that. The Nvidia ION only requires 18 watts
As for power supplies, I primarily only use two brands: Antec and SeaSonic. My last two systems have used SeaSonic and would highly recommend them to anyone. Never failed, and I promise you won't find a quieter PSU. But, they probably aren't cheap enough for your budget.
"You're not going crazy. You're going sane in a crazy world!" ~Tick