Am I getting any bottlenecks from my hardware? + Looking to Upgrade for Christmas

[Kung Fu Jew]

Christmas is coming up pretty soon so I decided it's time for an upgrade. What made me think so? Well, long story short, I can't run L4D with everything set to high. It's medium-highs and around 60 FPS unless there's a lot going on, in which I'll get 40 FPS. There's also quick lock-ups ingame which kind of annoy me and I think that's my RAM acting up.

So here's my hardware... (right click + view image)

[img]http://img5.imageshack.us/img5/8712/hardwarer.png[/img]

In short:

8800GT
2.5GHz Dual Core
2GB RAM
Windows Vista

I am looking to spend under 200 dollars in total. What should I upgrade? For a GPU upgrade I'm thinking about the 9800GTX, the processor I can't upgrade (I would need a new PSU), but RAM I'm really hoping to upgrade since I'm on Vista. My computer only actually has 2 RAM slots in it, each slot has 1GB sticks in there right now. I don't know where I'd find sticks that have more than 1GB in each slot, do those exist? Would 2 be under 70 bucks or so?

[CombineGuru]

You really need to upgrade that piece-of-shit CPU.

[editline]05:04PM[/editline]

it's a fucking pentium

[Kung Fu Jew]

Uh, no. I just bought that from newegg and it's done me great. I can't go any more than that. My PSU won't support it.

[CombineGuru]

Why does your PSU let you upgrade your gpu but not your cpu?
A cpu uses much less than a gpu.

[gerbils_alt_2]

[QUOTE=CombineGuru;18385683]You really need to upgrade that piece-of-shit CPU.

[editline]05:04PM[/editline]

it's a fucking pentium[/QUOTE]

You understand its still a core 2 duo right?

[CombineGuru]

yeah but I don't like them

[Kung Fu Jew]

[QUOTE=CombineGuru;18385828]Why does your PSU let you upgrade your gpu but not your cpu?
A cpu uses much less than a gpu.[/QUOTE]

I don't know if the GPU would actually work. My main concern is RAM, though. Do more than 1GB sticks exist and are they under 70 is probably my most important question (in my eyes)

[CombineGuru]

You can get 4GB of ddr2 ram in 2 sticks, but not for $70. It would cost like $100 - $150.

[Kung Fu Jew]

For both? Then I'll think about getting that. Sounds like what I'd need - could you hook me up with a link (hopefully from newegg)?

[Unreliable]

Go to newegg.com

Computer Parts -> Memory -> Desktop Memory -> DDR2 (800 or 1066) -> 4GB (2x2GB)

[Kung Fu Jew]

Thanks, that was fast