Posts Tagged ‘undervolting’
Increase Battery Life on you Mac Book
After a HDD crash on my Macbook Air I decided to buy a solid state HD, for speed. I bought a RunDisk 128Gb, and the speed difference is astounding. The one down side was battery life.
I was expecting to have more speed and better battery by using the SSD, but that was not the case. I used to get about 4 hours out of my battery on the Air and after installing the SSD disk i now get about 2 hours. That was 50% drop!
The good news was that after playing with CoolBook and Undervolting to fix the overheating problem on the Air. I reduced the “on battery” voltage of the CPU and now I am back to having 4 hours of work time. Amazing!
My Undervolting Settings on my First Generation Macbook Air
So far I have noticed a huge difference in the temperature of the Air. After playing with CoolBook for a bit, getting a few system hangs and one kernel panic, i found the following settings to be stable:
Adapter:
1200 MHz 0.9000 V
1400 MHz 0.9875 V
1600 MHz 0.9875 V
Battery
800 MHz 0.9000 V
1200 MHz 0.9750 V
Throttling: High
Temp Limit: 85 C
Video plays with no hiccups and so far temperature has not climbed over 70C.
