Can't figure out the drain

[Qwertyman]

Using takaman but i'm still unsure about my power requirements: here's what i have
TP 380W antec, amperages suck 18a i believe on the 12v

Athlon XP 2500+ @170x11 wish i could get higher
PMI pc3200 underclocked because of the obvious^
TT Silent Boost
2 Optical drives Liteon and Dvd Writer
3 drives:
--------------------------------------->
Raptor 10k
7200rpm Seagate
5400rpm Maxtor
1 120mm fan
ati radeon 9800pro
---------------------------------------->

3 usb devices sometimes 2 or 4
1 is the keyboard
2 is the mouse
3 is the printer, which is only on during use
4 is a thumb drive

i know the usb devices don't draw that much but its still a problem i have to deal with especially if i'm going to add another pci IEEE34.

now here's my question what are the draws on the raptor, and maxtor
and even better should i worry? i've checked out takaman and figured i was close, but am i close to borderline insane, because of the fact that wattage don't mean crap and the psu is blowing warm air?

 

[Qwertyman]

any suggestions?

 

[Ice Czar]

if your close it means your in the grey zone where there are no real figures
since no PSU manufacturer actually publishes derating curves to temperature
or a true crossload profile

well PCP&C has a rudimentary chart for derating, but even engineers get to dance the derating bullshit mamba
Clearing the Fog that surrounds derating curves @ Power Design 365
(free registration required)

as far as the HDDs, there are real figures for everything from spinup to seek draws
published by most HDD manufacturers, so look em up

Generally speaking its 2A for spinup and drops to 0.5A once spinning

so basically your in the trial and error zone
testing with temperature can reveal boundaries
but then your taking a risk most try to avoid