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New PSU advice required

Last response: in Components
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October 27, 2009 10:35:04 PM

Hi all,

I currently have a CiT 550w PSU, I have just upgraded my machine apart from the PSU. I have had Windows7 just lock up and/or restart and was wondering if the PSU was insufficient... i know the brand isnt considered much among people so I need an upgrade!

I understand I need good current/amps on the 12v rail. How many Watts are enough?

http://www.overclockers.co.uk/showproduct.php?prodid=CA... OCZ ModXstream 700w. - Dual 12v Rails @18amp/rail

I may not need all that power but for the price its worth it for future upgrades (maybe xfire)

http://www.scan.co.uk/Product.aspx?WebProductID=836913&...

PS everwhere in UK seems to be sold out of the OCZ!



What I have:
Phenom 955
2x Sata Hdd's
Radeon 4890
MDI 790fx GD70
3x12cm fans
DVD Drive



Thanks for your help in advance!!

More about : psu advice required

a c 248 ) Power supply
October 28, 2009 12:28:30 AM

Unfortunately I am not familiar with the CIT 550 watt power supply.

We just had another thread asking about the OCZ ModXstream 700 watt power supply. I managed to find two technical reviews (It's usually the larger 750 watt model that gets reviewed). The psu is more than adequate for a system with an ATI Radeon HD 4890 video card.
October 28, 2009 9:50:27 AM

Thank you Johnny,
I was wondering if 18a/channel is suitable for a stable system even if i wish to add say another hard drive and gfx card.

I guess i am seeing other models with a single 12v rail that can handle 50a and thinking "is this something that would benefit me"
October 28, 2009 2:04:32 PM

I'm in the U.S, but I run a CORSAIR|CMPSU-750TX 750W. With almost an identical setup. I'm not sure what your options are, being in the U.K and different PSU brands/voltage.
!