05-12-2014 12:05 PM - edited 05-12-2014 12:06 PM
ThrottleStop 7.00 beta 2
This version has CPU voltage and multiplier control for the 4th Gen Haswell CPUs but it does not yet have cache voltage adjustment. Just another option to try. Waiting for Lenovo to come up with solutions for issues is way too time consuming.
Nice, I'll give it a go. Thanks!
Another option perhaps worth considering is iGPU dynamic voltage offset - it's also available in XTU.
05-12-2014 01:57 PM
I have been lurking for a while wondering whether to post this. I returmed my W540 for a full refund due to this issue. I then purchased a Dell M4800... the difference is night and day. In my real world stress test (Large scale multithreaded C++ compilation) my W540 would quickly drop to base clock. The M4800 on the other hand maintains full quadcore turbo (3.4Ghz!!). It remains pegged at full turbo even for extended periods of compiling.
Interestingly in synthetic tests (prime95) the M4800 does slowly drop back to base clock over a period of a few minutes. Still better than the W540 which would drop back almost instantly.
So I would re-iterate that throttlestop should not be neccesary in a workstation class laptop. Other manufacturers prove this, and Lenovo needs to acknowledge it has an issue here.
05-13-2014 06:32 AM - edited 05-13-2014 06:33 AM
"So I would re-iterate that throttlestop should not be neccesary in a workstation class laptop. Other manufacturers prove this, and Lenovo needs to acknowledge it has an issue here."
Lenovo won't even admit there is a problem, and no fix will come, if you decide to wait for Lenovo to solve this problem, it will be in vain.
Lenovo never fixed or even admitted there is a problem with W510/520/530, so why would the W540 be any different?