Topower or Antec?

[0Lm91]

I am planning on making a system capable of doing crossfire, I have two psus in mind:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817342030

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007

Obviously the topower has more specs and power, but I am not sure if it is reliable.

Thank you.

 

[o1die]

Go with the antec. Newegg has a ps on it's shellshocker preview list for this wed or thursday, but the link doesn't work yet, and the brand isn't listed.

 

[obsidian86]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817341022

 

[JohnnyLucky]

Please list your pc components, especially the two video cards so we can make valid recommendations. Different video cards have different power requirements.

The general rule of thumb is a high quality 700 to 750 watt power supply with sufficient current on the 12 volt rail(s) can handle a system with two video cards operating in Crossfire mode. There are some exceptions like the new ATI energy efficient video cards which require a little less power.

Corsair, PC Power & Cooling, and Seasonic are some of the brands with a reputation for high quality psu's. They consistently earn high marks in technical reviews. They are stable, reliable, and come with a 5 year warranty. Lately we've been seeing a few high quality psu's from other companies.

 

[0Lm91]

The pc is a phenom II X3 720, 2 gb of ram of 1800 mhz, ASUS M4A79XTD EVO AM3 AMD 790X (it would work on 8X if there is 2 cards working together).

I would like to use two hd 5850 if possible, so that is why i think that the antec would not be the best option, since it does not have enough power, while the topower does have.

 

[JohnnyLucky]

Here are the official power requirements for the new ATI Radeon HD 5850 video cards.


ATI Radeon™ HD5850 System Requirements:

PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard

500 Watt or greater power supply with two 75 watt, 6-pin PCI Express® power connectors recommended

600 Watt and four 75 watt, 6-pin PCI Express® power connectors for ATI CrossFireX™ technology in dual mode

The power supply recommendations are for an entire pc system.

 

[bgd73]

the topower is for eatx, go with antec.

you obviously do not need the dual cpu power connect. An I personally run a apfc antec now, it is my best ever...it actually has apfc, no gimmick, antec is good like that.

 

[0Lm91]

Judging the power requirements the only one that could be useful doing a crossfire would be the topower since it has 4 6-pin PCI Express power connectors. But, obviously, I do not want to buy a bad power supply, if I have to invest more money, I will do it.

Thanks for the replies.