During the last couple of days, there have been numerous reports of the new iPad running hotter than normal including a photo captured using infrared cameras to record the new iPad’s excessive heat generation. While Apple has already issued a press release stating that the new iPad operates well within the company’s thermal specifications, Raymond Soneira, president of DisplayMate Technologies, has shared with CNET (via 9to5Mac) a few reasons why the new iPad is in fact a bit “toastier“.
According to the source:
- Twice the LEDs: That means more heat coming from more LEDs. This is especially a problem at full brightness.
- 2.5X the power needed: The brightness efficiency is lower, because the new iPad has more pixels (which means more transistors) compared to the iPad 2. More pixels and transistors take up more space, meaning less opportunity for light to pass. “So they basically have to blast light through the LCD to make it come out.” Soneira adds: “I measured the LED power at maximum brightness–it’s two and a half times greater than on the iPad 2.”
- Battery generates more juice: The battery has to push out more power. This makes the battery warmer.
- Traditional LCD technology: Sharp’s power-efficient IGZO technology was not ready for the new iPad, which forced Apple to use traditional —and less power efficient— amorphous silicon tech. [To be fair, the older iPads also used this tech. Perhaps Apple was hoping to go 100-percent IGZO to offset the above].
With all the above said, it is worth noticing that Apple still managed to keep the temperatures within 10-15 degrees of the earlier iPad models.
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Posted under: iPad News