[Pc_Support] PSU deals for SLI use?

[Bryan J. Smith]

Damien McKenna <dmckenna at thelimucompany.com> wrote:
> A friend is looking for some PSUs for running two SLI rigs.

You want the SSI EEB "WS" 6-pin (2x3) connectors (aka "PCIe")
on the power supply.  Ideally, the power supply should have 3
separate +12V rails (ATX 2.0 PSes have only 2).

> He's going to be running the Geforce 6800GT cards

Any reason he's not looking at the GeForce 7800GT?  They are
almost the same price, but much faster.

Or just opt for a single GeForce 7800GX, which typically does
as well as two GeFore 6800GT cards, if not faster.

> with some IDE drives.  Any suggestions on what to look for,
> besides ensuring that the PSU is ATX 2.0 compatible? 
Thanks.

For low-cost, I'm partial to the Seasonic S12 series.  I have
the 500W in my MicroATX box.  It has all the fix'ns -- from
the SSI EEB "Server" 8-pin (4x2) connector to _two_ (2) "WS"
(aka PCIe) 6-pin connectors, etc...  It, however, is only
dual-rail +12V.  They have a 600W version too.

I know there are some triple-rail +12V PS that start at $150
from Enermax (IIRC).  Really consider a triple-rail 550+W for
full SLI with 6800/7800 series cards (you can probably get by
with a 500W dual-rail +12V for 6600GT).



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