Keyboard flex variables

After comparing quite a few laptops today in regards to perceived keyboard flexing, which variables would have more effect:
Width of keyboard -- full size vs small
OR
"Thickness" of the laptop -- example a "thick" Toshiba vs a "thinner" Sony
OR
Something else I am not aware of.
This is assuming the surface the laptop is on is a stable, sturdy surface.

Thanks for all input.

 

it really depends on what is beneath the keyboard.
For example, on my dell e1505, their are plastic beams - so to speak, which support the keyboard. also, if I go to remove the keyboard, I have access to the inside of the laptop, so inessence the keyboard is playing a key role in teh structure of the system. The keyboard does not flex very much, but if you push it hard enough it will flex.
On my celvo D900K, their is a thick sheet of steel under the keyboard, which holds the motherboard, since the entire structure beneath the keyboard is solid, their is no flex whatsoever.
usually thicker laptops have more open space inside and sometimes more room for flex. This is usually not the case in thinner laptops, but it can be.
If keyboard flex is what you are very concerned about, you should go to a microcenter, staples, bestbuy, circuit city or whatever electronic stores around to test the keyboards yourself.

K-TRON

 

Thanks very much for the info. I didn't realize that what was under the keyboard could make such a big difference, or even that there was such a wide variety of structures.