Jump to content

Sign in to follow this  
Ray Proudfoot

P3D running but CPU not running at max speed

Recommended Posts

New PC (specs in sig) running P3D v4.3. With the aircraft at cruise I brought up the Task Manager and switched to the Performance tab. I expected to see the CPU running at it's maximum overclocked speed of 5.0Ghz. But it was only around 4.3Ghz. Why?

Is that utility a valid check of CPU speed or should I be using something else?


Ray (Cheshire, England).
System: P3D v4.5, Intel i7-8086K o/c to 4.6Ghz, Nvidia GTX 1080 Ti 11Gb, Samsung 970 EVO M.2 SSD, 1Tb Samsung 860 EVO SSD, Asus Prime Z370-A mobo, 32Gb G.Skill DDR4 3000Mhz RAM, Win 10 Pro 64-bit, BenQ PD3200U 32” UHD monitor.
Cheadle Hulme Weather

Share this post


Link to post

Hi Ray

I think Task Manager doesn't show the overclocked speed. I use a utility called CPU ID (one of many available), which shows information about the CPU, including the actual overclocked speed.

My new PC confused me initially, as the speed shown in this utility jumped up and down. This was due to a resource saving function - when required - ie under load,  the CPU remains at its maximum overclocked speed.

There are other utilities which will show you CPU and GPU temperatures as well as speed - you can watch these as you fly low over detailed scenery!

Best regards

Mike

 

  • Like 2

Share this post


Link to post

Ray,

I have a i5 6600K OC at 4.5GHz (All core) and Windows 10 Task Manager, CPU-Z and Core Temp all report it at 4.5GHz. May be there is something wrong with your overclock. Just a thought.


 

Normand Boucher

Intel i7 9700K @ 4.9 GHz / Asus Prime Z390-A / 32GB DDR4 3200 MHz / GTX 1080 TI 11GB / PSU 750 Watt / Samsung 970 EVO M.2 SSD 500GB (OS) + Samsung 860 EVO SSD 2TB  (P3D) / Prepar3D V4.5 + V5.0 / Windows 10 Pro x64

Share this post


Link to post

 The CPU speed shown in the task manager does show the current speed including overclock but keep in mind as well that it's only showing one of the cores as they don't all overclock to the same frequency (common at least with newer Intel CPU's unless specifically set to do so in the bios).

  • Like 1

i7-8700K, 16gb DDR4 3200,  GTX1080Ti, Win 10, P3d V5x

Share this post


Link to post

Thanks gents. Mike, I will install CPU-Z and see what it reports.

Normand, this is a professionally  built (and overclocked) PC. I’ll install CPU-Z first and see how it compares to the TM. Maybe they have set something in the BIOS.

More tomorrow.


Ray (Cheshire, England).
System: P3D v4.5, Intel i7-8086K o/c to 4.6Ghz, Nvidia GTX 1080 Ti 11Gb, Samsung 970 EVO M.2 SSD, 1Tb Samsung 860 EVO SSD, Asus Prime Z370-A mobo, 32Gb G.Skill DDR4 3000Mhz RAM, Win 10 Pro 64-bit, BenQ PD3200U 32” UHD monitor.
Cheadle Hulme Weather

Share this post


Link to post
1 minute ago, Dave_YVR said:

 The CPU speed shown in the task manager does show the current speed including overclock but keep in mind as well that it's only showing one of the cores as they don't all overclock to the same frequency (common at least with newer Intel CPU's unless specifically set to do so in the bios).

Ah, thanks. I suspect it’s taking an average of all virtual cores but if I recall correctly only 0 and 1 run at 5.0.

  • Upvote 1

Ray (Cheshire, England).
System: P3D v4.5, Intel i7-8086K o/c to 4.6Ghz, Nvidia GTX 1080 Ti 11Gb, Samsung 970 EVO M.2 SSD, 1Tb Samsung 860 EVO SSD, Asus Prime Z370-A mobo, 32Gb G.Skill DDR4 3000Mhz RAM, Win 10 Pro 64-bit, BenQ PD3200U 32” UHD monitor.
Cheadle Hulme Weather

Share this post


Link to post

Is the CPU manually overclocked, or is it relying on Turbo to boost the speed?  Also, what are the system specs?

Edited by exeodus

Alan

Share this post


Link to post
22 minutes ago, exeodus said:

Is the CPU manually overclocked, or is it relying on Turbo to boost the speed?  Also, what are the system specs?

I’m guessing that it’s using Turbo. But I’m no expert which is why I bought from people who are. System specs in my sig.


Ray (Cheshire, England).
System: P3D v4.5, Intel i7-8086K o/c to 4.6Ghz, Nvidia GTX 1080 Ti 11Gb, Samsung 970 EVO M.2 SSD, 1Tb Samsung 860 EVO SSD, Asus Prime Z370-A mobo, 32Gb G.Skill DDR4 3000Mhz RAM, Win 10 Pro 64-bit, BenQ PD3200U 32” UHD monitor.
Cheadle Hulme Weather

Share this post


Link to post
1 hour ago, Ray Proudfoot said:

New PC (specs in sig) running P3D v4.3. With the aircraft at cruise I brought up the Task Manager and switched to the Performance tab. I expected to see the CPU running at it's maximum overclocked speed of 5.0Ghz. But it was only around 4.3Ghz. Why?

Is that utility a valid check of CPU speed or should I be using something else?

When you view in task manager, the percentage your CPU is running at is converted to the freq

Perhaps you meant to say, why is P3d not running at 100%?

Share this post


Link to post
2 hours ago, Ray Proudfoot said:

New PC (specs in sig)

Fab, Ray. I'll be following in most respects, except the case.


Rick Almeida

Share this post


Link to post
2 hours ago, Ray Proudfoot said:

But it was only around 4.3Ghz. Why?

Ray,

Can you be more specific when you say "around" 4.3 please. Is it stable @ 4.3 or fluctuating up and down?


Kind regards,

Alex Nic

Intel Core I9-9900K@5.0 GHz, Nvidia RTX 2080 Ti, Samsung 2 x  850 Evo 500GB, G.SKILL Trident Z DDR4 3200 64GB,WIN10 PRO 64

Share this post


Link to post
53 minutes ago, kand said:

When you view in task manager, the percentage your CPU is running at is converted to the freq

Perhaps you meant to say, why is P3d not running at 100%?

Is it possible to see what % individual processes are running at?

Anyway, I believe Dave has given me the answer. Only the first two cores of the 8086K run at 5Ghz, the others run slower so the net result is something between 4 and 5.

Alex, the figure varied. Not constant.


Ray (Cheshire, England).
System: P3D v4.5, Intel i7-8086K o/c to 4.6Ghz, Nvidia GTX 1080 Ti 11Gb, Samsung 970 EVO M.2 SSD, 1Tb Samsung 860 EVO SSD, Asus Prime Z370-A mobo, 32Gb G.Skill DDR4 3000Mhz RAM, Win 10 Pro 64-bit, BenQ PD3200U 32” UHD monitor.
Cheadle Hulme Weather

Share this post


Link to post
50 minutes ago, vc10man said:

Fab, Ray. I'll be following in most respects, except the case.

Rick, it’s a great case. Wot you going for?


Ray (Cheshire, England).
System: P3D v4.5, Intel i7-8086K o/c to 4.6Ghz, Nvidia GTX 1080 Ti 11Gb, Samsung 970 EVO M.2 SSD, 1Tb Samsung 860 EVO SSD, Asus Prime Z370-A mobo, 32Gb G.Skill DDR4 3000Mhz RAM, Win 10 Pro 64-bit, BenQ PD3200U 32” UHD monitor.
Cheadle Hulme Weather

Share this post


Link to post
32 minutes ago, Ray Proudfoot said:

Rick, it’s a great case. Wot you going for?

Going to use my already good case, the Antec Ninehundred Two.

  • Like 1

Rick Almeida

Share this post


Link to post

Ray,

Even they OC the system to 5.0 and you show those fluctuations on CPU you still need  to change a few things to have the CPU not fluctuating ( especially if you chose to have higher settings in P3D). Those fluctuatings on CPU at higher settings will give you stutters  :

control panel

power options

select to high performance and click on "change plan settings"

click on change advanced power settings

expand processor power managment

check minimum processor state to 100%

check system cooling policy setting to active

maximum processor state setting to 100 %.

If all the above will give satisfactory results will stop here. If is still fluctuating we need to check what you have in BIOS, not complicating at all.

As you can notice I have almost the same system.

 

 

  • Like 2

Kind regards,

Alex Nic

Intel Core I9-9900K@5.0 GHz, Nvidia RTX 2080 Ti, Samsung 2 x  850 Evo 500GB, G.SKILL Trident Z DDR4 3200 64GB,WIN10 PRO 64

Share this post


Link to post

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  
  • Tom Allensworth,
    Founder of AVSIM Online


  • Flight Simulation's Premier Resource!

    AVSIM is a free service to the flight simulation community. AVSIM is staffed completely by volunteers and all funds donated to AVSIM go directly back to supporting the community. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. Thank you for your support!

    Click here for more information and to see all donations year to date.
  • Donation Goals

    AVSIM's 2020 Fundraising Goal

    Donate to our annual general fundraising goal. This donation keeps our doors open and providing you service 24 x 7 x 365. Your donation here helps to pay our bandwidth costs, emergency funding, and other general costs that crop up from time to time. We reset this goal every new year for the following year's goal.


    18%
    $4,530.00 of $25,000.00 Donate Now
×
×
  • Create New...