suggest PSU wattage for this system please?

Hi,

I have the below setup for a pro audio system and wanted to know what you'd suggest as a wattage PSU. I have heard (Like my other topic about Ram Timings) that PSU's can effect sound quality (our sounds are sound like they are phasing. Have checked all other options like leads etc etc etc) so i want to make sure I'm all ok:

- Asus Z9PE-D8 WS
- Xeon E5-2620 x 2
- 48gb Corsair DDR3 1866MHz Vengeance
- RME Raydat
- RME AIO (Raydat and AIO link together via a sync cable)
- ATI Radeon HD 4850
- Sandisk SSD
- 3tb hybrid sata 6gb/s x 2
- 1 2tb harddrive

- The PSU I currently have is an OCZ 1000w one.


When a project is loaded in cubase it is use about 35gb of RAM and CPU load is id say about halfway depending on project size.

Many thanks
Joe

I reckon you'd be OK with something like a Corsair CX600M which is a 600W semi-modular PSU. Should be enough to power those Xeons and the 4850.

There's one important question here, are we talking about analog signals or digital? If dealing solely with digital, your power supply doesn't matter as long as it's within ATX specs and has the necessary safeguards (OCP, OVP, etc.). For a system like that I'd venture away from the CX600M, yes it's modular but it's not a great power supply. For a system being used in a professional manner, I'm sure stability is of utmost concern and the CX line is definitely geared towards the entry level market. Basically any Seasonic/XFX/Corsair(AX/TX/HX/RM,as again I tend to suggest staying away from the CX series as the price savings is minimal compared to what the other units offer) unit of 600+ watts would work fine, although right now it's hard to beat the price of the SSR-750RM at Newegg after coupon code and rebate:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151132

If you're dealing with analog inputs,however, you're going to want the least amount of ripple as possible in order to maintain a stable reference voltage for the ADC. Which actually that Seasonic supply would also have you well covered.

Really, all the studios i have seen wouldn't dream of using a PCIe sound card, as this removes completley the need to worry about power signals on the computer.

https://www.turramusic.com.au/pages/CatalogueItem.aspx?CIID=5548

But yeah, if you've already got that gear (nice pc), the 1000W psu you have is loads.