Is this an ideal hardware configuration? What would you do?

Okay, so I ran this buy some other people and got some criticism but I'm still going to go ahead with it.

Currently, my specs are:

Intel Core2Duo E8200 @ 2.66GHZ
4GB RAM (only 3.5 in use -- XP32bit)
Generic POS 500w PSU
Mainboard: Gigabyte Technology EP35-DS3R
Nvidia 8800GT
130GB HDD
Samsung 22" (Native resolution: 1680x1050)

After the upgrade I've already paid for and should have finished by the weekend:

Intel Core2Duo E8200 @ 2.66GHZ
4GB RAM (only 3.5 in use -- XP32bit)
Corsair TX650w
Mainboard: Gigabyte Technology EP35-DS3R
XFX Nvidia 275 GTX
130GB HDD, 300GB HDD
Samsung 22" (Native resolution: 1680x1050)

It will be pretty much a gaming PC, hence the video card and PSU.

So far people have told me that not upgrading the CPU is a stupid idea, as it will bottleneck the whole PC--what are your thoughts on this?

I've also been told that the GTX 275 is not that much of an improvement over the 8800GT in my case because of my low resolution and also because of my slow CPU. What kind of differences am I looking at in performance?

With my hardware configuration, what kind of CPU should I upgrade to? It's not really a priority now as it's *fine* as far as I'm concerned, but in the future I might migrate to a quad core or something.

Lastly, my mainboard. Do you think it will hold up and when should I look into a new one? Since I've already purchased the new HDD (not installed yet--crappy PSU) and GTX 275, and since the Corsair PSU is a no brainer, what should I be looking into next (if you were me)?

Budget isn't really that much of a deal, but I'm more looking into upgrading what I have as opposed to buying something new altogether.

Any input is great Thanks.

Thanks. I'll take a look into those CPUs. Maybe not soon, but definitely in the future.

Good to hear my CPU will be able to hold it's own a little while longer!

I'd definitely OC that CPU. Grab a Xigmatek Dark Knight or similar cooler, you should be able to push quite a bit of juice out of that CPU.

Thanks for the recommendations. I ended up getting the Zalman ZM660-TX PSU instead of the Corsair, as they weren't available. The Zalman seems to be a really good PSU though. I also couldn't get the 300GB HDD inside the box because the GTX 275 takes up too much space, as do the cables from the PSU, but live and learn. Might get a bigger box later.

Currently:

Intel Core2Duo E8200 @ 2.66GHZ
ZM660-TX PSU
Mainboard: Gigabyte Technology EP35-DS3R
XFX Nvidia 275 GTX
130GB HDD
Samsung 22" (Native resolution: 1680x1050)

That's a big negative. The 500w PSU I had wasn't even consistent, it would've been devastated by the 275. It also didn't have two 6-pin Express cables, which are a minimum for the 275. I think you need anything over a 600w just to give it room to breathe.

A high quality 550w PSU will be mch more consistant then a 500w stock PSU. On the other note, I would stick with 600w to be safe and have room for future upgrades as you said you wanted to do with the CPU to get quad core.

Not quite sure if I agree with spending 120 extra dollars on a PSU just for the extra rails unless your going SLI, but thats just me. PSU is not something I'd want to skimp on, and I'm never tell someone to downgrade if they are willing to spend the money on it.

My GTX 275 requires two 6-pin express cables (direct from the PSU) in order to function. Most of the 500/550W PSUs I looked at only had one 6-pin express and no 8-pin express at all. So that combined with the fact I might decide to upgrade soon, made me get the 660W.

I also found out that Corsair PSUs aren't available here, which is why I got a Zalman. Props to them though! Zalman does make good PSUs! They made quite a good name for themselves recently.