Computer switch around and upgrade

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.

Below is my current 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
This is my HTPC:

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)
If possible I would like to keep the stuff below as part of the new build:

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".

So to business:

Bulldozer (Prob the 6core) Does anyone know when it is likely to hit the shops?
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 . I'm also not sure if the PSU will hold up to a spec like this.

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 (My work computer has 24Gb!)

I have a budget of about £600-700

Any help of advice would be great

Thanks,

Sniper.

P.S sorry if I put this in the wrong place :S

my suggestion would be to convert the old PC into the new HTPC, retire the current PC, and add a meatier GPU to the new system. even a GTS 450 would be a step up from the 9600.

The GTS 450 is a CUDA enabled card, which may help in some of your work. You said you were considering a Quadro, this is a compromise card. The 9600 will make a good theater card.

I do worry about the old Nvidia chipset board though. Those ran hot and may not live too much longer as an HTPC.

Thanks, thats an interesting point about the gfx card I hadn't thought about.

Does anyone know when the Bulldozer chip is likely to be available to purchase?

I hadn't looked at the i7's because of the price. I'll have another look around on scan (it's where I was planning to buy from anyway)

Thanks.

Is that the date we can buy (give or take a day)?

I might as well re-address this build in 2-3weeks.