Looking to upgrade my PC, need suggestions please!

[Reeno]

Well basically what the title says, looking to upgrade my PC and just wondering what I should upgrade first and upgrade to what.

Processor: AMD Phenom(tm) II X4 945 3.00GHz
GFX: ATI Radeon HD 5800

[Isiolia]

What is your current system not doing well enough? What you have there is still relatively recent.

My inclination for a current build would be to wait a few weeks for Z68 boards to hit, and pair that with an i7-2500k and a decent cooler to overclock. There are better GPUs, just depends on how much you want to pay.

If it's just seeming a little sluggish, maybe consider an SSD or something, a fresh format + one of those will probably net you much zippier performance without overhauling your whole system.
If you're more an AMD fan, Bulldozer should also be out relatively soon if I recall.

[Reeno]

I have my OS installed on a 40GB SSD and everything else is on a 1TB HD, but ya my system seems sluggish even after a fresh reformat. I just did a driver wipe and installed some new ones so hopefully that makes it a little better.

off-topic question. If I had the wrong amount of RAM installed in my computer what results could that give?

[Reeno]

Ya my system seems a bit sluggish even after a fresh reformat. I'm currently running my OS on a 40GB SSD and everything else is being installed on a 1TB HD. Just did a driver wipe and reinstalled up-to-date ones so HOPEFULLY it makes things more smooth.

Also an off topic ?. If I had the wrong amount of RAM installed on my PC what results would happen? Crash more, or nothing?

EDIT: sorry about the double post first one wasn't showing up.

[Olo401]

If you have unmatched pairs of memory (i.e. different speed or size sticks on the same channel) then it will run in single-channel mode, which is a bit slower. You can do oddball amounts without a problem if you wanted and still get it to run dual-channel.

[Crowort]

What is sluggish? Like which game or app or w/e is slow? If the PC is slow all the time something is wrong that you could likely fix.

[Reeno]

Firefox, and when I click on apps like MSN Messnger and open them its just a white box for a little bit and then finally shows up.