Thanks again for the help, the wiring harness worked like a champ! Also, after seeing the pics i realized that the T7400 manual actually has pinouts, and they did appear to match for my purposes. It's worth a look...Thanks again!
As the P5 and P10 connectors should be universal - to use with ANY PCI-E graphics card - and the cable from the photo is also universal - you should be able to use it as converter from 6pin to 8pin - but I haven't tried it myself so I can't give you any warranty but I would use it that way
If your video card is keyed to accept that connector you MAY be okay, but dell's 8 pin plug runs comm, 3.3vdc and 12vdc. Check the pinout on your card against the t7400's p5 and p19 connectors. I had to make a custom harness for my setup, but it was because the riser card needed the 3.3vdc connection. Your card may run a standard configuration just be sure the input from your psu is pushing the correct power to each of your pins.
<ADMIN NOTE: Broken link has been removed from this post by Dell>
But riser requires special connection and special voltages - P5 and P10 are "standard" connectors for PCI-E graphics cards.
P11 connector is dedicated for graphics riser.
Gotcha, and I completely agree. So long as MSquires is not using the P11, and only the P5 & P10, it *shouldn't* be an issue. Re-reading his post I realized you guys are smart and are using the 1kw PSU.
P.S. I followed your advice & picked up a PERC 6/i...only 'thing' is that it came with the 'rest' of the Poweredge 2900iii it was installed in...(got the whole setup for less $ than a pulled PERC 6/i was running online). So I've been playing around with that for a while now...any recommendations on A. WHS 2011, B. SBS2011 or C. 2008R2? It's for a home server, but I want secure remote access, a domain controller, DLNA compliance, automated backups, and a few other 'goodies' along the way. Thanks!
I'm still on Vista and Q6600 but I'm moving to Win7 and 2x e5472, 16x 4GB, 2x 9800GTX+ - on the Precision T7400 - and few SAS drives
So I can't help you with OS