intel i5 8250u base frequence

[ekremergun]

https://resmim.net/f/uPN9Mt.png

I have Lenovo yoga 520 8th intel i5 8250u, cpu speed always 1.58 GHZ (watching youtube,surfing browser), when I don't use laptop frequence up 3.39

>> I try windows power managment Cpu power manager %100
>> Format laptop
>> BIOS update
>> Chipset Update

(CPU temperature, when the computer not using 50 centigrade)

 

[TJ Hooker]

I don't trust task manager for monitoring stuff like that, try using hwinfo64 to see what frequency your CPU is actually running at.

 

[ekremergun]

https://resmim.net/preview/JjO1Mn.png

I install program but I think same error continue..

 

[TJ Hooker]

Run "sensors only" when you launch hwinfo64, and see what the clock speed is.

 

[ekremergun]

https://resmim.net/preview/WMttb7.png

I install intel extreme Tuning Utility and run stress test after 10 second frequeance down 1.6 .. Hwininfo same result

I think it's hardware problem

 

[TJ Hooker]

I see a max frequency of 3.4 GHz and a min frequency of 1.6 GHz, which perfectly correspond to the rate boost and base frequencies of that CPU. https://ark.intel.com/products/124967/Intel-Core-i5-8250U-Processor-6M-Cache-up-to-3_40-GHz

That is a 15W chip in small, light laptop with limited cooling, there's no way it's holding 3+ GHz under heavy load like XTU. I'm guessing it's either hitting a thermal or power limit and downclocking as a result, which would be expected. What's the max temperature it hits?

I don't think there's an issue here.

 

[levijonesm]

Looking at your first screenshot, it's odd that the CPU load is 88% and yet the frequency is only 1,58 Ghz. At that much load, it should boost to 3.4 Ghz. I also use a laptop with 8250u (Acer E5-576G).

On your 2nd screenshot (HWINFO64), notice that the word "TURBO" is in red, meaning it is disabled. Try checking your BIOS settings and make sure Turbo is enabled.

 

[TJ Hooker]

@levijonesm if you look at the 3rd screenshot, you can see that clock speed is getting up to 3.4 GHz (in the max column). Turbo appears to be working.

 

[levijonesm]

@TJ Hooker, yes saw that too and your reply does make sense. I was just left with a bit of doubt given the first 2 screenshots. I suppose if the thread starter can run Cinebench and get 500+ CB then I would be confident that his system is fine. Cheers.

 

[PedroMchd]

Lenovo on Turbo Boost always were bad, and to be worse, on purpose. I got the same CPU and, the Turbo works, but for a really, really little time. If you game, don't know what exactly is the trigger of it, but it stays on 1.6 GHz almost all the time. Or it oscillates a lot to 1.6 to 3.4. It's not exactly a throttling, but still disappointing. Even if you stay the CPU cool enough, I guess it won't fix.

Because that's I will say right now. I used ThrottleStop (spoiler alert, it didn't fixed it), and weirdly, using some settings (I didn't made undervoltage because I suck on that), it ALMOST were perfect...! It mostly work at 2.4 to 3.4, but if oscillates WAY more (like 800 MHz) in most high-stress scenarios. (If you game, the stutters of the drop is terribly noticable.) Using HWMonitor, I discovered that is the TDP that made this terrible oscillation. At least what I saw, when the CPU hits something to 25 to 30+ W, it triggers and decreases the whole thing. Yikes. Got the same similar with Extreme Utility. Btw, that's what is happening to you! And that's even increasing everything of Turbo Boost stuff idk.

But I don't recommend using my temporary ThrottleStop tip/solution if you're stressing the CPU all the time or gaming. Just playing Overwatch, it runs with a ton of stuttering, more than without TB, of so much lack of CPU power.
Someone really needs to do a custom BIOS to those laptops, specially to this i5, because 1.6 GHz makes have problems even running YouTube and some random browsing. It is hard for me convey just how bad this thing is.

Lenovo laptops is a joke, hands down. Just got my ideapad 330 because it's the freaking only budget laptop with a MX150 in Brazil, really. Idk if still survive with him (it's a great laptop and does everything if you exclude this problem!) or move out with another better laptop. IF OUR MARKET HAD ONE. (our market is terrible, just terrible...)