HP ProLiant MicroServer N40L overclock (AMD)

Hi guys. Recently I got this this nice server which I currently use as a workstation. I´m just wondering if the are any possibilities to overclock this machine (I know it´s got a passive CPU cooler, but I still want to do it). I have already flashed it with an unlocked BIOS from BIOS-MODS.com, but even in that new BIOS I can´t see any OC options (you can grab the rom file from here: http://www.bios-mods.com/forum/Thread-HP-Proliant-Micro... ). Also, it would be nice to be able to control it´s fan speed manually (I can see the current RPM in BIOS but can´t change it). Here are the full spec (I added to it an aftermarket GPU AMD Radeon HD 6450 512 MB GDDR5): http://h10010.www1.hp.com/wwpc/us/en/sm/WF06a/15351-153... . Thanks