http://hardforum.com/showthread.php?t=1639662I get a score of 1225 CONSISTANTLY plugged into the A.C charger on my Lenovo IdeaPad y570 (core i7-2630qm -- gt555m) but when im running on the battery it drops to 825 ive made sure to have all the power options set to the same (High Performance) mode is set in the windows/lenovo energy managment so its not lacking the power...
I have also spent some time helping Lenovo W520 owners with their throttling laptops so I guess your friend got lucky.
http://forums.lenovo.com/t5/W-Series...26/td-p/504029
Sometimes throttling on battery power is blatant like above where the CPU is running at only 800 MHz and other times it is more subtle. Unless you are logging the performance of your CPU and GPU, many users don't even realize that their laptop is not running at its designed speed when on battery power.
Acer, Asus, Dell, MSI, HP, Lenovo, etc. are all guilty of producing a throttling laptop or two. Owners need to do more testing and put more pressure on manufacturers to get their act together and stop turning a blind eye to this issue.


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