Tom's Hardware > Forum > CPU & Components > Power Supplies, PC Cases & Case Mods > New PSU advice required

New PSU advice required

Forum CPU & Components : Power Supplies, PC Cases & Case Mods - New PSU advice required

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chanstarco   10-28-2009 at 12:35:04 AM

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/show [...] ubcat=1098 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 [...] ce=froogle

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!!

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Silver CPUs badge JohnnyLucky   10-28-2009 at 02:28:30 AM
- 0 +

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.

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chanstarco   10-28-2009 at 11:50:27 AM
- 0 +

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"

Reply to chanstarco
zipzoomflyhigh   10-28-2009 at 12:14:30 PM
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The modstream pro 700w actually has 2- 25a rails, not 2- 18a rails, which is the same as the better quality Fatality 550w.

This is a much better psu with the same amps on the rails and a awesome deal right now.

http://www.newegg.com/Product/Prod [...] 6817341022


Message edited by zipzoomflyhigh on 10-28-2009 at 12:16:23 PM
Reply to zipzoomflyhigh
zipzoomflyhigh   10-28-2009 at 12:18:29 PM
- 0 +

Just notice your in UK. Oh well.

If your planning on going crossfire down the road I would have to recommend something like a quality 650w or 700w. (not the modstream)

Reply to zipzoomflyhigh
9d3tsi   10-28-2009 at 04:04:32 PM
- 0 +

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.

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