Actually I'm having some interesting issues with heat.
I am using a 2500+ bar (retail HSF) from newegg & the asus a7n8x deluxe
Ram isn't an issue - picked up a stick of 512m corsair xms 3500 ddr.
If I set the jumper to fsb200, It will boot at 11x200 + ddr running at 200(400) Mhz at the stock voltage (1.65)
This set up will NOT last more then a minute under Prime95 (which is a let down

)
Temeratures in this situation are about 59c under full load.
The next situation I tried was setting the jumper back to the 133/166 fsb speed and then tweaking the bios to run the cpu at 190 fsb. the clock remains 11x190 and the ram runs flawlessly at 190(380)Mhz. Voltage remained at 1.65
I can run Prime95 for hours - and it hasn't failed yet (about 24 hours testing so far)
The problem is the Temperature from Asus Probe - it peaked around 68C !
I'm hoping that one of the issues is the way the cpu and psu are seated at the moment - I'm waiting on a new case and I hope it drops the temperature.
I have to wonder if pushing the fsb to 190 is worth the added heat, and although I don't want to, I may have to step back to a fsb of 166 and play with the clock multiplier.
The cpu will not boot at 200x10 btw, as I think I'd have to unlock the chip