Upgrading CPU in old dell XPS410

I am trying to upgrade the CPU in my 2.5 year old Dell XPS 410.

As near as I can tell, I have something similar to what is described here:

http://www.anandtech.com/systems/showdoc.aspx?i=2834&p=2

However, my current CPU is a 1.86 GHz Duo. I have tried the Intel E8500 Duo 3.16GHz, but the computer just powers on and kicks the fan into overdrive.

I appears to be a Dell custom intel motherboard e210882 with BTX power.

Can anyone make a recommendation on a compatible CPU upgrade that would get me to around 3 GHz.

The 410 can only use C2D from the Conroe/Allendale family and Kentsfield Quads, not being able to get a Wolfdale to boot has nothing to do with the power supply.

I would suggest saving your money and buying new....Your upgrade options are going to be pretty limited for that vintage as Enzo said. The money your going to spend would go a long way towards a new low cost machine that will in all likelihood outperform the older machine and provide a fresh upgrade path in the future.

That's a quad core server processor. It would be a large upgrade but not worth the price since you are not running a multi-socket server. Upgrade your motherboard and cpu in your current computer to something more modern for less than that.

Anandtech had 2 q6600 cpus in their for sale forum for $130 or less. Make an offer; you might get one for close to $100. Lots of folks need cash this time of year.