Thinking of re using some of my Old office computers for mining

[ninjapug]

Right now i have a few old computers currently not in  use. They seem to have a PCI e Slot each.
The problem is the power supply is only 240 watt. The specs is in the link below.

http://www.priceleap.com/description/HP_Compaq_dc7100_SFF_P4_520_40G_512M_XP_PC939AABA--7626347


Can this model support one HD 5850?

[SteveFL]

I was not able to power my HD 5850 with a 450 watt PS (Computer booted, but shutdown 10 seconds after I started mining).  I believe they recommend a 500 or 550watt minimum.  Bear in mind that most of the OEM power supplies may not be capable of delivering the rating on the side as well.  Also note that my 5850 required 2 (two) 6 pin PCIe power connectors.