How about going to the source? Avid lets you know right on their own site what they "approve". That is your best source.

[[url=http://[/URL]="http://avid.custkb…"]Avid - Pro Tools 9.0 Qualified Windows Computers[/]="http://avid.custkb…"]Avid - Pro Tools 9.0 Qualified Windows Computers[/]

I have another suggestion

You will get some pretty solid advice from reputable custom built DAW companies, who build PC for a living and test there systems on all the DAW out there. I have had the opportunity to receive quite a few PC from various companies and learned a lot from them in regards to stability and what they find is working best on PC software/hardware. Makes sense to right? If they run well on their hardware and config, then you know the facts.

This being said, with my personal requirements and overall experience from these companies. There is no better than PCAudioLabs.com . Serious!

Good luck.

Hi.
Thank you for the replies.

I did some extensive research and came to this hardware list as a possible PC system for audio.
Any comments are most welcome...

Processor;
INTEL CORE i7 950 (3.06Ghz) SKT 1366

Motherboard;
GYGABYTE GA-EX58-UD3R

Ram;
KINGSTON HYPERX DDR3 6Gb Kit 1600 Mhz

Hard Drives;
WD CAVIAR BLACK 500Mb SATA II 32 Mb (WD5001AALS) for OS
WD CAVIAR GREEN 1Tb SATA II 32Mb for recording
previously owned 750Gb Sata II 32Mb for samples

Graphic card;
previously owned XFX GEFORCE 7300 GS

CPU Fan;
ZALMAN CNPS9900 LED

Power supply;
ENERMAX ECO80+ 620W

PC enclosure;
ANTEC P183

The final cost is 899,3 Euros (1,231.16 USD)

Waiting on your comments/advises

Best regards,
Lemec

Ok...

I did the DVerb test on my present system an got to open and run without hitting the red zone a total of 47 Dverb's plugs in the 10 mono audio tracks...

Can anyone tell me what conclusion should i take from that result ?

Best regards,
Lemec

No. None of us have PT9 to try out that I know of.

As to your list, the Caviar Black is the better line of HDD. I would make sure my audio drive was also a Black. I'm also a bit old school. I prefer drives that are in the 500-750 GB range as they have fewer platters and better stability. I do have some very large drives for archive purposes but none of my recording drives are bigger than 750.

Cooling-cooling is the absolute priority. It is better to have many large fans on low speeds than a few smaller fans running fast.

MOBO-I would google that particular model and the word audio or recording or DAW to find out if anyone is using that particular board. Different boards have different layouts and controllers so even if they take an i7 or DDR3 that doesn't automatically make them low latency boards.

I got PT9 this afternoon, but I'm going to bask in the Hokies win over the heels. I might get around to installing it tomorrow, but Sunday is busy. I'll try to get it in and give a report asap.

Big Hint: Go to the websites of the companies that sell audio pcs for a living.
They know what WORKS and what won't have their customers coming back
at them with pitchforks and lawyers demanding their hides and money back.

[[url=http://[/URL]="http://www.adkproau…"]ADK Pro Audio| Digital Audio workstations, Pro Audio Laptops, Pro audio interfaces, Pro audio software, DAW.[/]="http://www.adkproau…"]ADK Pro Audio| Digital Audio workstations, Pro Audio Laptops, Pro audio interfaces, Pro audio software, DAW.[/] is one, you can google others.

See what specs they have and copy them.
You might even find out that getting one already put together and
with a WARRANTY may be better than assembling one on your own...