Actually, I called PC Power & Cooling, they had like 8 of the other Silencer 470 Dell PSUs in their Refurb bin, I think I ended up paying like $70 and it showed up yesterday. That should be more than enough now.
Don't mean to rain on your parade but that wasn't much of an upgrade
Dell's 375w is rated for 30 amps combined on the 12v, the Silencer 26a on the single 12v rail
For $70 you could have gotten a much better, new power supply, that you really didn't need