Computer Help

So I'm here looking for some advice. I have 2 computers 1 HPTC and one main.

The HPTC is getting old and needs an upgrade.as it's starting to stuggle with some of the newer files coming through. On top of this my main PC is also dated now.

I figure buy a new main pc and move the old parts down. I also want to keep the parts below from my current build is possible

Coolermaster full alloy case (Will drill 120mm+ holes in needs be).
Coolermaster 500W power supply (Don't know if this is going to be meaty enough.
Nvidia 9600GT (I don't play games and I can't afford a workstation GFX card)

The HPTC currently uses onboard GFX so I will need to buy a new passive GFX card for that. I'm thinking "1GB Asus HD 6450 Silent".

As for the Main PC I'm currently going with:

Bulldozer (Prob the 6core)
Asus Sabertooth 990FX
Antec Kúhler H2O 620 CPU Watercooler
2no. (2x4GB) Corsair DDR3 Vengeance Racing Red, PC3-12800 (1600), Non-ECC, CAS 8-8-8-24, XMP, 1.5V
90GB Corsair Force Series 3, 2.5" SATA 6Gb/s SSD
How does this look? Last time I really looked into building a computers I was buying a core2 duo so I'm out of touch and advice would be great. I'm also not sure if the PSU will hold up to a spec like this.

Thanks,

Sniper.

*Edit*

Forgot to mention that I use the main PC for normal day to day stuff but also use it for work which involves: 3D studio max, Inventor, Revit and 3D studio max. Some of these are very heavy on RAM usage hence the 16gb.

it'll probably be best if you list the make and model of all the parts in your HTPC and main PC, and also give us a budget. that will mean everyone will know whats worth keeping and what needs to be chucked/sold. i imagine a lot of the HTPC will be in the chuck/sell pile, but you never know, there might be something useful in there

to make it easier for yourself download CPU-z on both of the PC's. that should tell you the make and model of everything except for the PSU and case.

i assume you know that bulldozer isnt going to be out for a while, and no-one knows much about it yet

Right so taking your advice here is my current setup:

Main PC:
Coolermaster Praetorian (PAC-T01)
Coolermaster eXtreme Power 500W (RP-500-PCAR)
Core 2 Duo E6300
ASUS P5N32-E SLI Plus
4Gb DDR2 400MHz (1Gb sticks)
GeForce 9600 GT

HPTC:
Jeantech 450W (JN120F-450-AP) (See pic)
Zalman HD135 Case
Athlon 64 X2 4200+
GAMA69GM-S2H
4Gb DDR2 Ram (1Gb sticks)
On board Gfx (Radeon X1200 Series)



My budget is somewhere between £600-700.

I do like the idea of the DB chip, I know it's released in the next week or 2 but not sure how long it takes to make it to us consumers?

Any help/adivice would be great.

Thanks,

Sniper

I should also mention that I'm not interested in OC'ing. I have tried it in the past and never really got on with it! The reason for the Water cooler is more to do with noise so if there is a better option then please speak up