I decided to place an order for W520.. but I canceled it after I read this post :
W520: Speedstep not working properly (on battery)!... - Lenovo Community
is it true? are u guys having these issues? or its not everybody..I dont want to spend 1500+ on a laptop and it turns out to be messed up!
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Not sure, but I guess i will find out soon enough, as I just ordered one.
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This is a pretty old issue... and no, there is no BIOS fix as of now, and it seems to affect a good chunk of users. I have only seen one person reporting that SpeedStep works properly on battery.
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I am having trouble understanding the problem. The way I understand it is:
1. TurboBoost is never suppose to kick in when W520 is running on battery. Does this mean the laptop runs super slow running on battery?
2. TurboBoost sometimes don't work even when running on adapter power with the new BIOS update. Only way to work around it is to fool the power input somehow as described by the people on that discussion.
Can W520 users comment on how inconvenient this has caused them?
What about T520? T520 does not experience the same problem? -
Even if there is a problem with some newer BIOS versions, it's always possible to use ThrottleStop utility ( http://forum.notebookreview.com/har...arket-upgrades/531329-throttlestop-guide.html ) and get full CPU power on battery.
ThrottleStop works fine W520/2720QM and BIOS 1.26 -
2. If it doesn't work, shut it off and turn it back on. I haven't really experienced it not working on AC.
W520 shocking news? are u guys having these issues?
Discussion in 'Lenovo' started by zackor, Aug 19, 2011.