This post is more than 5 years old

6070

February 25th, 2019 09:00

Aurora R7, Turbo Boost, i7-8700 not working

I have an alienware aurora with an i7 8700(non k) and lately it seems that turbo boost only works right after restarting my computer. I will restart it, open CPUID and at first all cores will be floating around 4588 mhhz...but then after doing nothing that speed will suddenly drop to just under 3800 mhz...and then will drop again to just under 3200...when i go to stress the CPU, it will only turbo boost up to just under 3.8...and that is as high as it will go up until i decide to restart my computer. It's almost as if the turbo boost is only working at a value of 50% or less and im not even sure if thats possible nor would i know hot to make that change in the first place. 

February 25th, 2019 10:00

dude, you keep trying to explain to me that my processor will only turbo boost based on headroom/ other factors and i've established multiple times that im aware of that...the issue is my processor used to max out 4.3 or 4.6 depending on how many cores were being used. Now it maxes at 3.8 regardless. temp is not a factor. dust is not a factor. My temps stay below 60 and my pc is virtually dust free as i clean it once a month. 

11 Legend

 • 

47K Posts

February 25th, 2019 10:00

 

4.3 is the top end with all cores cranking.

3.8 seems to be average over time3.8 seems to be average over time

 

You keep stating on it should be at 4.6 all the time but this is nowhere guaranteed.

Intel does still list maximum single-core clock rates, but it does not guarantee the multi-core clock rates.

Intel Core i7-8700K
Base 3.7 GHz
1      4.7 GHz
2      4.6 GHz
4      4.4 GHz
6      4.3 GHz

Intel Core i7-8700
Base 3.2 GHz
1      4.6 GHz
2      4.5 GHz
4      4.4 GHz
6      4.3 GHz

 

 

10 Wizard

 • 

17.6K Posts

 • 

70.1K Points

February 25th, 2019 10:00


@ShaneHallberg wrote:

cpuid doesn't only give one frequency/speed measurement. It shows measurements for all 6 cores and all 12 threads. . 


If you mean CPU-Z, where/how ? 

10 Wizard

 • 

17.6K Posts

 • 

70.1K Points

February 25th, 2019 10:00


@ShaneHallberg wrote:

No, I mean CPUID HWMonitor 

https://www.cpuid.com/softwares/hwmonitor.html

 


Oh, ok . :Indifferent:

My HW-Monitor only shows core-utilization and temperature for CPU. I thought you wanted to see speed/frequency? 

I'll update my version later and get back to you.

11 Legend

 • 

47K Posts

February 25th, 2019 10:00

". As i stated, the cpu being used isn't the issue. "

This is wrong.

When the  ALL the cores of the CPU are not being used one can be boosted.

Under heavy loads the power and temperature go up.

The more cores used the hotter it gets.

At some point the CPU will even "throttle back" if its getting too hot.

That's why Turbo boost kicks the clock up when things are "idle".

Core i7-8700 with a stock heat sink means that you may not always get the chip's most aggressive Turbo Boost frequencies under taxing workloads. A CPU with 50% more cores cannot dissipate more heat than its predecessor. You need enough thermal headroom to realize peak performance.  This is why liquid cooling is used for high end systems.

 

CPU-z is not a Dell or INTEL application.

Its not supported here.

Cleaning out dust bunnies and re pasting the CPU cooler may improve things.

 

February 25th, 2019 11:00

They've rolled out a lot of updates recently...but i think i've always been able to track frequency?  Either way...heres a synopsis. 

1. I ALWAYS have HWMonitor running. Occasionally i'll find that I forgot to launch it and immediately launch it but i basically always have it running in the background because it doesn't negatively impact anything i do on here. 

2. My pc performance as far as I can tell is fine...i'm more so concerned that maybe its a mobo or bios issue that i may not be aware of or know how to fix.

3. Maybe it's the chip itself but i felt like this could be ruled out due to the fact that for the first few minutes my pc is running, it will spike at right under 4.6 eventually on all 6 cores. Then maybe a minute later it will drop to it's base clock of 3.2 and no matter what i do the clock will not exceed 3.8 unless i restart my computer again.  My best explanation/guess as to whats happening is for some reason my turbo boost is being capped or throttled despite temps being no where near the thermal limits.  For example, since i restarted my computer last, i've hit 4588, 4589, 4588, 4590, 4590, 4590 MHz (within the first few minutes of restarting my pc)and the highest temp on any individual core is 53c. It's almost as if the bios is set to limit turbo boost to 40-50% but im not really sure why that would suddenly be a thing nor do i know how to check or troubleshoot that. 

dust definitely isn't a factor though i'll gladly turn her off tonight and take some canned air to the insides just to say "i did it" and rule that out definitively. 

 

February 25th, 2019 11:00

it seems i accidentally deleted a post but here.

the max values you see for core clocks were only achieved within the first few minutes of restarting my pc. Now, even when stressing all or individual cores, no core will exceed a clock of 3.8 MHz. 

 

You can see that thermal throttling wouldn't be an issue.

My aurora is dust free...as i stated in the post i may have deleted...it seems like the turbo boost is being limited to around 40-50% of what it should be doing. It still works...and as far as i can tell my pc performance is fine...but it still concerns me to see something not working like i've seen it work for the last year. i run HWMonitor all the time so i'm pretty familiar with how my processor behaves and what it's capable of

hwmonitorstats.png

10 Wizard

 • 

17.6K Posts

 • 

70.1K Points

February 25th, 2019 12:00


@ShaneHallberg wrote:

No, I mean CPUID HWMonitor 

https://www.cpuid.com/softwares/hwmonitor.html

as far as where or how...i'm not even sure what that means.


Ok, I updated my HW-Monitor to latest 64bit version v1.39.0. Now, it shows frequency/speed for each core. :Yes:  I suppose that is why they depreciated T-Monitor.

My Aurora-R6 is not available for testing this right now. This other machine has Intel-i7 930.

I'm pushing CPU with Prime95. All cores/threads go to 100% utilization.

However, core-clocks stay at stock-rated speed (non Turbo-Boosted).  I'm getting 2807Mhz . Interestingly, In CPU-Z , it says 2940Mhz (which is very close to advertised Turbo-Boost speed).

Based on this, I think we need better software and methodology to test Turbo-Boost. I don't have the need or time to research this, but maybe you do? Let us know what you find.

February 25th, 2019 13:00

Just tried cpu-z and it still wont exceed the 3800 mark. The results seem to be virtually the same for me on both pieces of software.

10 Wizard

 • 

17.6K Posts

 • 

70.1K Points

February 25th, 2019 20:00


@ShaneHallberg wrote:
Just tried cpu-z and it still wont exceed the 3800 mark. The results seem to be virtually the same for me on both pieces of software.

Is TurboBoost switched off in BIOS ?

Are all the Intel-SpeedStep BIOS options still at their defaults (usually, best/default setting is ON).

February 26th, 2019 00:00

that was the issue. I feel silly. I should have checked that but I never changed it so I just assumed it was still set to high performance. Went to check, it was set to power saver and now i'm hitting the clocks i'm used to seeing. 

 

Thanks to both of you for being patient and helping out. 

0 events found

No Events found!

Top