How is it known that the iPad 2 has 512 MB of Ram?

[cav23j]

I know there are review units out there but have any of them actually opened it up and looked or are they just assuming from some type of test they ran on it?

and if that's the case..why didn't they run the test at the presentation hands on part?

 

[nvcplus]

Engadget used geekbench to confirm it.

 

[aristobrat]

Gruber had a developer friend write an app for the iPad 2 that tested some video things (on his review loaner). No way he could have loaded that app at the "hands on" after the keynote.

 

[gatearray]

The free Activity Monitor app from the App Store will tell how much RAM is in use and how much there is total (available)...

I would think downloading that would do the trick.