I am not sure anyone knows as its a chip designed for netbooks and only made it into desktops because its cheap. You can see intel technical data at http://download.intel.com/design/processor/datashts/320... if this helps. But basically you are still trying to overclock to get the performance of a seriously dated desktop CPU.
they say it was shipped underclocked for battery performance. cant see how 1.86Ghz (or maybe 2.0) can be a bad thing with desktop cooling. The mini itx has three fans in it.
At current voltage, under load, doesnt reach anything above 60 degress. Maximum is set to 125 degrees for this chip so lots of room to move
I changed it using ASRock overclock in windows, then re-ran the vista eperience index. Still came out at 3.3 even after clocking it to 2.0Ghz so i know its not a true overclock. ill go into BIOS that way and see if i get better results.
i have the Zotac Mag running the Intel Atom 330 @ 1.60GHz.
Code name "Diamondville"
3072 MBytes DDR2 pc2-5200 (333 MHz)
Kingston 64GB SSDNOW V Series serial ATA hard drive.
Double booting into Windows 7 64 bit / Ubuntu 10.06 LTX
All from NewEgg, The Zotac Mag easaly pealed open starting on the bottom with my finger nails for the ram and hard drive update. The Bios is easily accessed for CL adjustments, and NorthBridge/MCP79 Chipset voltage configurations. Which all work fine for me in 'auto, default'.
Its one of my favorite toys right now and i have a few. The SSD makes the Zotac seam five time faster than stock. The added ram is helps HULU run smooth.
Shuts down in abut 5 sec. Window 7 64 bit starts up through the double boot in about 40 sec. Downloads and installing software is some the fastest I've seen.