New G2 HP Prime
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10-15-2018, 05:46 AM
Post: #167
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RE: New G2 HP Prime
Hello,
The power profile on G2 is very different from the one on G1... Namely, it uses more power in most modes, however, since it computes faster, it should stay less time in "run" mode and therefore use less energy. ie: it uses 1.5 times the power in run mode, but is 2.5 times faster, so the energy used for a calculation is less) One issue with G2 is that it's memory takes a whole lot more power when the calc is in "Off" mode (this is due to the ram technology used (and it's size), the ram technology being mandated by the CPU). This is where the "deep sleep" comes in. It is a mode where the ram is powered off and the CPU fully shut down (clock excepted). In this mode, the system power use is much, much lower than on G1... But the RAM is lost (user data will be saved in flash prior to entering this mode, so there is little impact for the user BTW). However, when powering the calc back ON, it will have to reboot (which is slower than a normal turn on of course). Normally, the calc will enter this mode after 3 days of OFF mode, assuming a long time of OFF, to preserve power. Long story short, but a good OFF scheme is hard to think of! One trick however is the SHIFT+ON key combination (press and hold shift, then press ON, then release). This will enter deep off immediately. So, if you are done with your calc for the day, enter this mode and your batteries will last a whole lot longer! Cyrille Although I work for the HP calculator group, the views and opinions I post here are my own. I do not speak for HP. |
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