12-06-2019 02:36 PM - edited 12-06-2019 02:51 PM
To me it looks like Lenovo has made a recent change to how their laptops handle performance and cooling. This is all tied to that same slider now. However, that change came with significant software bugs, at least in hybrid graphics systems. This is true across different series. One similar bug that I have encountered in the E590 series is that while the slider does work as expected, something breaks after a reboot and you need to move the slider back and forth again to restore the performance. And, additionally, as long as the system is not in the "Best Performance" mode, the CPU frequency is slaved to the GPU temperature and once that temperature goes above 67C, the CPU throttles to 300MHz.
So I'm curious whether similar problems exist in the P53 series.
12-06-2019 03:01 PM - edited 12-06-2019 03:09 PM
Ah I see. Well, I can reboot and don't have to reset the slider. Apart from that, I don't know if the 67° GPU-CPU problem also occurs, but I don't see many scenarios in which I would want the "better performance" / no fans setting while stressing the GPU at the same time anyways.
12-06-2019 03:18 PM - edited 12-06-2019 03:19 PM
This is true: once you know about the slider modifying performance, you should be Ok. However, this is far from great for most people because 1) most people don't know about the slider modifying performance; 2) they expect the computer to work properly, even if the performance is not 100%, in any mode of operation. CPU that is throttling to 300MHz renders the machine unusable; 3) having to remember to check on the slider every time you need performance may get old quickly for some people who don't like to remember such things or have too much to remember anyway. For example, I've been doing field recording for a couple of years. Setting up a recording session takes hundreds of small actions, and usually you work under stress to meet the deadline. Every extra thing to check is another extra thing you could forget and a higher risk of a botched recording.
12-06-2019 04:00 PM
@nvsnow: Ah well, I probably haven't made myself clear enough, I no longer have throttling issues at all. So, for me, unplugging means the memory clock goes down to 800Mhz while the GPU clock remains stable. When I plug in clock speeds instantly go up to normal, however. Anyways, thanks for taking the time to try and help!
You've been helpful as well! My recommendation is to make sure save a restore point or image your machine now just in case you want to try different settings or install a software update. It's no fun when the GPU gets throttled unnecessarily. For example, a video that normally takes 1.5 minutes to encode will take 7 whole minutes.
Throttled Benchmark - oh yeah!
12-06-2019 07:11 PM
I wonder how many people use their mobile workstations on their lap? Everytime I get some level of consistency in GPU speeds, I'll pick it up and sit back on the couch and suddenly the GPU MemClock falls and stays that way.
This is my second P53 and there is really no difference in behavior. The good thing is that this one sits flat on the table. The other one 'rocked' so it got obnoxious when typing on it (tested on multiple surfaces to be 100% sure) I didn't notice it much, however, because I generally have it raised on a cooler/stand primarily for ergonomic purposes while on the table or on lap.
This is a hot topic here... What are the equivalent mobile workstations for the other big brands? I'd like to check out their forums and see if they're getting similar issues - or better yet, viable workarounds and fixes.
12-07-2019 12:57 AM - edited 12-07-2019 01:00 AM
This functionality is implemented in and enforced through Lenovo APS (Active Protection System) driver;
This should stop if you kill ( or disable ) this device ...
There might be a difference between P53/73 implementation though ( it so feels from what was posted on this forum earlier)
At least it did for us ...
Other manufacturers also have similar system; Specific implementation will vary; I haven't heard HP version to cause problems, though I am not much into HP, they look kinda lame ...
12-07-2019 01:36 AM
The switch is in the Vantage application. Just flip it to off and manually set the performance level. I've had no issues with the latest version of Vantage and the SIF driver update on either my P1 or P53.
12-07-2019 01:43 AM - edited 12-07-2019 01:45 AM
Didn't get to try new version of Vantage;
Since it doesn't bring anything to the table [ other than issues ], I probably won't;
Several people in concurrent threads, who claim they are current on software [ recent, within about a week ], claim they still have same issues, so ...
If it does work, however, it should really default to off, as whole idea to throttle on lap is stupid; I would agree with the other poster on this one;
If one wants to do serious work on the lap, one would need power and would have to cope with heat;
in the alternative, there should be no heat as GPU already thorttles down due to lack of load, hence no issue;
Entire thing is a gimmick which have caused quite a few issues for many people it seems
12-07-2019 02:05 AM - edited 12-07-2019 02:08 AM
For what it is worth however, there should be a fixed summary write up, describing possible causes to throttling, as well as possible solutions for P53/73 in particular;
Existent threads, of which there are few, are fat and kinda hard to navigate and search for a new person who just happen to join the party
Some issues are caused by thermals (with possible paths to improvement), some by power, others by balancing issues ( power/thermal spreads GPU/CPU) with distinct remedies available [undervaluing or turbo boost specs adjustment for example];
Few are caused however by a lousy software [ and are fairly easily fixable ];
Quite a few people can benefit from such rtfm
12-07-2019 02:42 AM
The System Interface Foundation contains the drivers that were in past years separate installs. I am of the opinion that not keeping the SIF drivers current may be the root cause of some of these issues. The default setting of the Intelligient Cooling is "OFF". Vantage turns it on if desired. There is no separate APS driver on my systems.