Throttling??

Has this issue appeared in any of the new Sandy Bridge Dell laptops?

X220 cpu throttling problem - Lenovo Community

Thanks,
Harvey

 

My E6520 quad core w/ nvidia graphics throttled when I accidentally plugged it into a 65 watt adapter. Plugged in the 90 and all was normal again.

I put the E6520 through the wringer and have never seen throttling issues.

My guess is that it is a Lenovo issue. I know that on the X201 tablets around here, the 65 watt power adapter charges them VERY slowly when the machine is running.

 

Yeah, I hope it's just a Lenovo issue - I don't recall seeing any posts on this forum indicating any throttling issues. Is your E6520 an I7 cpu machine - there were some posts (Lenovo) indicating it was only an issue with I7 processors?

Thanks,
Harvey

 

i7 2720 processor

 

IMO, it is an issue likely to arise in any of the thin and light notebooks with normal CPUs because there is no room for a cooling system able to shift the heat fast enough. What is unclear to me is whether the throttling is triggered by temperature or power consumption. Sensibly, those notebooks should have the 17W CPUs but the normal ones are much cheaper to buy from Intel. I haven't seen any noticeable throttling in my Lenovo T420s (one size bigger than the X220 with much the same hardware inside) but I have seen it in my Toshiba R700 (previous generation CPU). I also saw throttling on a couple of occasions on my Dell E6410.

John

 

Throttling down to 798 MHz while gaming, etc., was an issue for the HP Envy 17 with Sandy Bridge CPUs until they released an updated bios last night. Before this bios was released, users were running ThrottleStop to get up to full speed. Some new Asus laptops also have this problem.