New Computer (Gaming, CSS, HL2) Help Please!

[logitech]

Hey guys,
For the past month, ive been thinking about building a new computer, because this one is getting old and crappy. I cant play CSS on this comp because i get 20 FPS on my 9600 Atlantis. I have done A LOT of research. Take a look and tell me if its good:

ASUS A8N-SLI Deluxe ATX AMD Motherboard
BFG Tech GeForce 6800GT 256 MB 256-Bit GDDR3 PCI-e x16 Video Card
AMD Athalon 64 3500+
2 gigs of memory
Microsoft Windows XP Professional X64 Edition 1 package
Western Digital Caviar SE 320GB 3.5" Serial ATA150 Hard Drive
Dual Layer DVD+RW
Logisys 500W Crystal Power Supply
Case: http://www.clearpc.ca/catalog/product_info.php?products_id=28
Sunbeam Light Bus: http://www.xoxide.com/sunbeam-525-lightbus.html
Blue Liquid Neon Kit: http://www.crazypc.com/Merchant2/merchant.mv?Screen=PROD&Product_Code=8230B
Cathode Fan: http://www.crazypc.com/Merchant2/merchant.mv?Screen=PROD&Product_Code=82507B

Im planning on buying all my shit off www.newegg.com. As of looking at this site: http://www.firingsquad.com/hardware/counter-strike_source/
I was planning on buying 1x BFG Tech 6800 GT 256 MB instead of 2x 6600 GT 128 MB. MY GOAL IS TO HAVE AN OVERALL GOOD COMPUTER AND OVER 100 FPS ON CSS AND ON HL2! My questions are....

Is this a good enough computer to have 100 FPS or more on CSS and on HL2?
Is this a good computer overall?
Do you guys have any suggestions for me?
Thanks!

 

[Trifid]

I would change the ASUS motherboard tio something else, as it is known to be buggy. This is $10 cheaper, and is one of the best around.

Are you going to overclock?

2gb's of memory is overkill right now, as games don't even use 1gb. What manufacturer?

You might want to get the 32bit version of windows for the time being, as it 64bit windows will give you lower performance in games that run in 32bit which I think the only game that is 64 bit is a version of far cry.

Is that a venice AMD 64 3500?

That PSU is not very good, you are paying for the looks, with a generic PSU in it, which can take out the whole system if they go. If you want a good looking PSU than the OCZ modstream is good, along with thermaltake's ones.