BCLK lowering/RAM throttling???

Alright, I know thats hardly unlikely, personally I have never heard of such a thing; but recently I just went multi-display (extended), so I could monitor all of my games in real time on the second display while playing on the main.

SCIIs performance seemed a little lower then usual, so I took a screenshot of HWINFO32 while playing. Check it out, look at the Ratios/BCLK/RAM timings

Perhaps this is a noob mistake, but I dont believe it should look like that...should it???

 

Just a bug. The CPU multiplier can not physically go that high in the 840QM. The maximum multiplier when a single core is active is 24. The ThrottleStop TRL window should show this.

Try running ThrottleStop on your second display and leave it in monitoring mode. It will give you an accurate look at your multipliers while gaming. You can also click on the BCLK button, multiple times, to get it to recalculate your Base Clock speed. It's usually rock solid stable.

What HWiNFO is reporting might be a sign of throttling but the multiplier is definitely not going to 65.

 

I know, which is why I was freaking out lol I thought the BCLK becoming so low was killing my RAM's performance and thats why I experienced a slow down in SCII.

Anyways, had this one too from the other day, when I was overclocking, shows multi of 25/26, bug too huh?

Ill most certainly run trottlestop in the background my next game, I have it pinned to my taskbar, but generally only use it for testing purposes

 

The HWiNFO table shows the maximum possible turbo multiplier and that is 24 so 25 and 26 are bugs. With a locked CPU like the 840QM has, there is no way for the multi to go higher.

The G73SW has some throttling issues. Yours might have the same. That first HWiNFO screen shot has me thinking that your CPU was using some clock modulation throttling to slow itself down internally. ThrottleStop tries to report this throttling separately so it is easier to see and understand.

 

Why would the CPU need to do that, if it isnt heat/power related?

Which part of TrottleStop will show me if/when that happens again?

Thanks for answering my questions btw

 

The CMod and Chip columns in ThrottleStop should always be showing 100.0 which shows your CPU is running properly and not being throttled. Anything less than 100.0 shows that clock modulation throttling is being used.

There are a lot of random reasons why this happens. I'm just on my old Dell and I never have a problem with this but out of the blue, I went to have a look at TS to explain this better to you and the damn thing is sitting at CMod 75.0. I'm not doing anything stressful but my laptop is throttling. I have never seen this before. Dell throttles this laptop to 75.0 for about 10 seconds when I switch from AC to battery power but then after that it automatically goes back to 100.0. This time it was just stuck at 75.0 and I had to check the box in ThrottleStop to fix this.

It's usually power related or GPU heat that triggers this but on some laptops it can happen randomly. It will be interesting to see some ThrottleStop screen shots when you are playing that same game.

 

Cool; So by selecting the check mark next to CMod and Chipset Clock Mod, I can remove such throttling if it occurs, correct?

Yea thats interesting lol my cpu has always been amazingly cool, even during the summer months, idles in mid 40's, games in 50-60's (except occasionally higher in RTS games, of course), and under maximum stress testing about 72 max stock clocks, and 75 overclocking. I also have a powersupply larger then that of the stock one, about 150 -> 180watts, so I should be good there, especially since I wasnt overclocking when playing that game when it happened. ICD on CPU and GPU, just shouldnt be heat or power related.

I should be playing much more in the coming hours, same game and mode Ill take some screens during play, and update this thread.

 

I just figured out my problem. The power adapter is crapping out and not being recognized correctly by the bios so it has decided to turn on 75.0% Clock Modulation to slow the CPU down just to be on the safe side. Bizarre timing of this issue.

My wife was using this laptop earlier today and I thought I heard two beeps from the bios to signal this charging problem but she didn't say a word. Typical. Now I can blame it on her!

You can turn on the Log File option while gaming. ThrottleStop can efficiently gather data from your CPU without putting any significant load on it. You should see 2 columns of 100.0 in the clock modulation columns. If you don't want to bother testing, a check mark in those two boxes should help prevent these two types of throttling. I always like testing first just to see what's going on with these unchecked. Most laptops use 1 type of throttling or the other but never both. That's why if you test first you can see what the problem is and correct for that problem. No use wasting CPU cycles correcting a problem if it doesn't exist on your laptop. I look forward to seeing some more data.

 

LOL Time for an upgrade

Yea I turned on the Log File option, but it didnt ask where I would like it saved? So where does it default to? But here are a few screenshots, actually quite funny, one of them in particular...

Indeed it wasnt throttling, thanks again

EDIT: Let me guess...it has to be "Turn on" before it logs -__- lol forgot to do that

 

ThrottleStop can log your data whether it is Turned On or in Monitoring mode. It will create a file called ThrottleStopLog.txt that will be saved within the ThrottleStop folder.

HWiNFO is having a few issues. What I have discovered is that some monitoring applications and side bar gadgets are not using the shared system timers in a friendly manner. Intel does not protect these timers like they should so one rogue application can randomly stop and start or clear these timers. That can prevent other monitoring applications from getting accurate results. Try disabling some of your side bar gadgets one by one and you might find which one is causing problems for HWiNFO. Also try updating HWiNFO to the latest stable version.

If your bus speed dropped down to 0.1 MHz, you would get a new award for the most throttled laptop ever. I've got an old 7 MHz computer in my closet that would run circles around you.

 

Cool ill check that out when I am back on my G73 (currently on my Transformer).

Hey an award is an award right? lol