We reported yesterday on the overheating iPad issue, which may be anything from a minor inconvenience to an extreme fire hazard, depending on who you are. Unless you're Apple, in which case it doesn't exist at all.
The problem, of course, is that everyone reckons they're an expert. But that's not stopping CNET from quoting a real “expert” as saying the whole thing is related to the new iPad having double the LEDs as the old one.
According to DisplayMate Technologies president Raymond Soneira the third-gen iPad has twice as many LEDs as the previous model, which at full brightness requires 2.5 times as much power as before.
Or, to use Soneira's own words: “The LED power at maximum brightness is 2.5 times that of the iPad 2. They had to jack up the number of LEDs so the peak brightness is the same as on the iPad 2. That absolutely makes it warmer.”
Aside from those two potential sources of increased heat, Soneira also pointed to the higher-capacity battery, saying that the more power a battery pushes out, the warmer it gets. Lastly, he reckons that while Apple wanted to use Sharp's power-efficient IGZO screen technology for the iPad, it wasn't ready in time so it had to go with traditional, less efficient amorphous silicon tech.
All four of these factors are obviously interlinked, but can each be responsible for a potential increase in heat generation over previous iPads.
However, Soneira said his own iPad didn't get uncomfortably warm during his tests, which puts a fresh question mark over the whole affair.