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SteveK1985

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2 Posts

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August 23rd, 2023 22:15

CPUs Not Turboboosting past all-core turbo on Poweredges.

Good Evening All,

I recently purchased a Dell T630 and 2 x E5-2695 v4s and they are never able to reach past the all-core turbo:

Also had the same issue on my Dell T420 with E5-2470s v2s that never went above 2.8GHz

I have all settings to maximum performance in the BIOS having followed this link and similar posts on this forum -

https://enterprise-support.nvidia.com/s/article/bios-performance-tuning-example-for-dell-poweredge-r730 - Unfortunately, it makes no difference. 

I have a HP ProLiant DL160 Gen8 which has no problems turboing:

I also have a lot of Dell R640s at work with Xeon Gold 6230s which never seem to go above 2GHz aswell.

I have yet to see any evidence of Dell PowerEdges actually fully Turbo-boosting - Can anyone prove me wrong and tell me what I am doing wrong?

Thanks

Steve

DELL-Joey C

Moderator

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3.4K Posts

August 24th, 2023 07:41

Hi @SteveK1985

 

Just to confirm, you have disabled C1E and C States? 

 

I've read in the Intel forum community, the Xeon processor and boost monitoring, the speed of the processor increases with server's load. And they did mention that if the speed is showing beyond 2.1GHz (E5-2695V4), turbo boosting is working. 

SteveK1985

1 Rookie

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2 Posts

August 24th, 2023 14:44

@DELL-Joey C​ 

Hi Joey,

The problem is that they are turboing, but not past the all-core turbo speed of 2.5-2.6GHz - if you see my first screenshot the Turbo Max is 3,300Mhz/3.3GHz - which is the speed they should running at.

Normal behaviour for Windows-based systems set to use high-performance mode should be close to Max CPU Speed like on the HP below:

My Precision 3650 Tower:

One of our less used Hyper-V Hosts at work:

This seems to be a widespread issue - as most the Dell Servers at work are showing similar speeds to above.

Thanks

Steve

(edited)

atafm2

1 Rookie

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89 Posts

August 25th, 2023 15:50

Do note (if you didnt already know this) that these xeons run off of a boost table.

Depending on how many cores experience a load, dictates the boost frequency.

I would recommend a program like CPU burner, if you still have windows on it, where you can put a synthetic load on a specified number of cores. Then check what boost you are getting.

Also, Windows is not always the best at reporting the boost freq. I would recommend something like Hardware Info.

Here is the boost table for the Xeon E5-2695 v4

Also, There are many settings in the bios that would disable or reduse turboing. Check to see if any of the power / efficiency settings are enabled that would disable turboing. Same with cooling profile settings

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