Interesting, for an E2140 @ 3.2Ghz, 1.425v (BIOS), Radeon X1950Pro PCI-E, 1 320GB WD SATA HD, 1 IDE DVD burner, it gave me an estimate of 365W.
I have a ThermalTake 430W (yes, I know, I know. But it was cheap) powering it. Seems to run fine for me.
I have it plugged into a 330W/550VA UPS.
Ok, this PSU calculator is utterly wack.
In the "overclock your CPU section", I put in my E2140, and OCed it to 3200Mhz @ 1.42v (couldn't enter 1.425). It shows my CPU as taking 164W.
Now, to check my new builds, I put in a Q6600 G0, and OCed it to 3600Mhz @ 1.45v. It shows the CPU taking only 192W!
How can a lower clocked, lower volted, dual-core CPU take nearly the same amount of power as a higher-clocked, higher-volted quad-core?
Either the quad should be taking around 300W, or the dual-core should be taking closer to only 100W.
Overall, it shows my Q6600 @ 3.6Ghz, 1.45v, with crossfired HD4850s, some fans, 5 SATA HDs, DVD, no floppy, taking 670W. Yet, in
this thread , someone replied to my query about the Antec EarthWatts 650W, saying that it would be enough.