While I cannot speak to the efficacy of cooling pads, I can speak about an alternative
I had a laptop, a WinBook, that I bought in 2000 ... it died earlier this year. For nine (9) years, it has been powered up around the clock, used as a desktop machine. Shortly after I bought it, I hot-glued four (4) plastic bottle-caps, screw-off caps from beverage bottles, to a piece of cardboard from a furniture box, cut to just larger than the WinBook footprint.
Considering the price of cooling pads as opposed to my impromptu riser, you might try that, see if the temperature drop is similar to the change yksyks
saw. As an alternative, it's green and free. If it doesn't seem to work, you can always go the cooling pad route.