I brought two blue orb and i install it on the v5500 and it seems a little over size.After switching on my computer for about 15mins,i touch the back of vsa100 core...and it felt damm hot and and scource my hand.And i would like to know whether is it over heating?

The stock coolers do the job, but they are very noisy with those two small fans whizzing away at high RPM.

Any heatsink works by conducting the heat away, so if the chips are too hot to touch, then I guess either the heatsinks are undersized (unlikely) or you haven't mounted the heatsinks onto the chips correctly.

How did you mount the heatsinks? Are they stuck on with a self adhesive pad? Or did you glue them on with a two part heat conductive epoxy?

There are no mounting holes on a V5500, so unless you have fashioned a custom mounting solution, any other kind of fixing is out.

Basically you need to ensure that as much of the heatsink is mounted onto the chip as possible, and that the heatsink is flat and square on the chip.

Andy

this might be allright, but be careful..another system fan should be added..