Bitcoin Mining with Poweredge Servers?
If you could get recent GPUs (Radeon HD 6850 or newer) for very, very cheap, you might be able to make a couple of Bitcoin per month. It may not be worth it, depending your electricity costs.

Use these tools to help guide you to an informed decision:


P3 Kill A Watt power meter, to find your actual power consumption
Mining hardware comparison, to find a GPU that will work in your system and plug its hashrate into...
Mining profitability calculator, to calculate what your break even or profit point will be.


vanitygen is probably your best bet given the equipment that you already have.