AMD Phenom X4 9950
ASRock AOD780GXE/128M motherboard
OCZ Platinum DDR2-800 4 gig kit
Sapphire Radeon HD 4870 Toxic
Palit Radeon HD 4850 Sonic
Thermaltake V9 Midtower
Arctic Cooling Freezer 64 Pro
First you need to determine which cables you will need to use. My rig isn't particularly extensive, so one Molex cable is plenty. I thought I might make it with just one SATA power cable, but I ended up needing one each for my hard drive and optical drive. My two cards required a total of two 8-pin PCI-E connectors and one 6-pin PCI-E connector.
Then I installed the power supply into the case. The Thermaltake V9 has bottom PSU mounting, with a vent on the bottom of the case. Bottom PSU mounting really needs a modular PSU so the Power-Mod 700 fits the bill.
Before installing my video cards I did some cable management. The power supplies I have been using have had very long cables that allowed for plenty of slack to hide the cables, even on a full tower. The cables on the Power-Mod 700 are a little short for this purpose. Also, with many power supplies I have been able to use one SATA cable for both my hard drive and optical drive, but the Power-Mod's SATA cables were a little short for that. But keep in mind that not all cases allow for hiding of cables, and with most less expensive mid towers, extra long cables are a hindrance rather than a plus in the cable management department.
I ended up needing both Molex cables too. My ASRock board has a 4-pin Molex connector for use when running multiple video cards. The Molex cable was a few inches too short to connect the case fans in a hidden area. That wasn't really a big deal, as I normally don't run two video cards on this rig. I added the second just for this review.
Then I installed the video cards. Most cases don't allow for a clean build when running multiple video cards, so cable length really doesn't matter much there. I guess I should mention, though the cables are a little short for the cable management I've been doing. They are long enough to do the job that they are intended for and should be long enough even in a full tower.
And that's it. I'll do some more tidying up later, time for some testing now.