which one would be the better one ?

[spawn447]

Ultra X-finity Titanium 600 Watt SLI-Ready Power Supply OR
Thermaltake 680W Dual Fan Power Supply ATX 12v 2.2v SLi

thanks

 

[Bbq]

Ultra X-Finity, by far

Also, check your sig. Limit is 10 lines

 

[spawn447]

ok fixed, thanks

 

[jonnyGURU]

The X-Finity 600W looks better, IMHO, and costs a hell of a lot less, but there's a reason why the Thermaltake is on ATI's Crossfire list for X1900 and the Ultra is only on the list for X1800 and below.

The Thermaltake has each PCI-e on a separate rail. The X-Finity puts both PCI-e's on the same rail, so a pair of X1900's can overload the rail.

If this is for a future build and you can wait a couple months; Ultra will have a version of the X-Finity 600W that has one big 12V rail (37A) instead of two, and this will solve this "problem."

 

[spawn447]

thanks guys, its for a friend