Partial spec, need help finalising..

[MajorG]

Hi folks,

I've been out of the upgrade game for a while and would be grateful for your advice on what to do here.
I'm wanting to get back into some gaming, titles like Fallout 3, Left4Dead and stuff on the horizon are too good to miss! I've missed so much as well like COH, Stalker etc and really want to play these and have them look nice!
This has to last a while to, so any headroom for future would be nice.

I've had a tide-me-over prebuilt system with an E6400 in it. Apart from that tho, the mobo, graphics, case, PSU and are OEM tat and not worth keeping.
I've been mulling over something like this:

Gigabyte GA-EP45-UD3R Intel P45 (Socket 775) PCI-Express DDR2 Motherboard
Kingston HyperX 4GB (2x2GB) DDR2 PC2-8500C6 1066MHz Dual Channel Kit
BFG GeForce GTX 260 OC MAXCORE 896MB GDDR3
Corsair TX 650W ATX2.2 SLi Compliant PSU
Antec Three Hundred
Microsoft Windows Vista Home Premium SP1 64-Bit

Question is, is the 6400 worth keeping and plugging into something like that or will it be a complete bottleneck, even if clocked? Or should I just be getting a E8200/8400 with the above and sell what I can from the current rig?
Any issues with the rest of the spec above?
I'll be keeping my monitor, a 20inch Dell 2007WFP which runs at 1680x1050. Given this, is the GTX260 overkill and should i drop it to a ATI 4850?


Sorry about the long post, I've lurked here for yonks and know you all to be a font of techie goodness, so any thoughts are gratefully appreciated!

 

[Chimerical]

Only thing I could think of would be to swap the Kingston with some GeIL.

The 6400 won't be a bottleneck if clocked to 3GHz, something that should be easy to achieve in a P45 board. The GTX260 or ATi 4870 are perfect cards for your 22" monitor.

 

[MajorG]

Ta for the advice, I'll get a decent CPU cooler and clock the E6400 and see how it goes. I suppose the updated board gives me the option of plugging a newer CPU in later!

Ah yes, the RAM. I just specced it with whatever was cheap, but looking everything else it I don't think there's any point with 8500 stuff and the timings are a bit weak on these sticks I mentioned.
I've got 4GB of OCZ ReaperX 6400 sat in it's box, dropped on it for a bargain price a few months ago and had planned on selling it, but it seems like good stuff to use in this system. Only thing that bothered me was the sheer size and thickness of the ramsinks, doesn't look like anything else would fit along side it if i wanted to upgrade!