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I installed both Intel Turbo Boost Technology Monitor and CPU-Z and ran prime95 single core benchmark + gaming. In neither of the cases I was able to register Turbo Boost working (at all times the clock speed was capped at 2.8 GHz).
I made sure Turbo Boost is enabled in BIOS (I have ASRock Z370M-ITX/ac with latest BIOS version). My question is: is there any definitive way to confirm that Turbo Boost is working? How do I troubleshoot this issue?
Thank you!
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Phantom160: Thank you very much for contacting the Intel® Processor communities. We will do our best to assist you with this scenario.
In this case, we always recommend to install the latest BIOS version on the board and also the latest version of the chipset and management engine drivers:
https://www.asrock.com/mb/Intel/Z370M-ITXac/# Download https://www.asrock.com/mb/Intel/Z370M-ITXac/# Download
In order to confirm that the Intel® Turbo Boost Technology is working, we can always run the Intel® processor diagnostics tool as well:
https://downloadcenter.intel.com/download/19792/Intel-Processor-Diagnostic-Tool https://downloadcenter.intel.com/download/19792/Intel-Processor-Diagnostic-Tool
Additionally, on the link below you will find more details about the feature:
https://www.intel.com/content/www/us/en/support/articles/000005641/processors.html https://www.intel.com/content/www/us/en/support/articles/000005641/processors.html
Any further questions, please let me know.
Regards,
Alberto R
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Hi Alberto,
Thank you for your reply. I confirmed that I have the latest BIOS (v.1.2) and Turbo Boost is enabled in BIOS. Further, I ran Intel processor diagnostics tool and I don't see any conclusive indicators that Turbo Boost is working. All clock speed monitors that I've used show 2.8 Ghz top speed. Please see below diagnostics report:
--- IPDT64 - Revision: 4.0.0.29
--- IPDT64 - Start Time: 11/15/2017 11:50:29 PM
--------------------------------------------------------------------
-- Testing
--------------------------------------------------------------------
CPU 1 - SPBC - Pass.
CPU 1 - Genuine Intel - Pass.
CPU 1 - BrandString - Pass.
CPU 1 - Floating Point - Pass.
CPU 1 - Prime Number - Pass.
CPU 1 - Cache - Pass.
CPU 1 - MMXSSE - Pass.
CPU 1 - FMA - Pass.
CPU 1 - AVX - Pass.
CPU 1 - IMC - Pass.
CPU 1 - PCH - Pass.
CPU 1 - IGD - Pass.
CPU 1 - GFX - Pass.
CPU 1 - CPULoad - Pass.
CPU 1 - CPU Frequency - Pass.
IPDT64 Passed
--- IPDT64 - Revision: 4.0.0.29
--- IPDT64 - End Time: 11/15/2017 11:55:30 PM
--------------------------------------------------------------------
--- IntelR spbc Module Test --
...
Version 1.0.8.64b.W
...
..Retrieved Processor Manufacturer
GenuineIntel
..Retrieved Processor Brand String
IntelR CoreTM i5-8400 CPU 2.80GHz
IntelR spbc Module Test -- Pass --
--- Genuine Intel Test ---
...
Version 1.0.12.64b.W
...
Expected -- GenuineIntel
Detected -- GenuineIntel
Genuine Intel CPU Module Success
--- Brand String Test ---
...
Version 1.0.14.64b.W
...
Brand String Module Success....
--- Floating Point Test ---
...
Version 1.0.11.64b.W
...
AVX is supported in your OS
Max AVX supported AVX2
FMA3 supported
MFLOPS CycleRun Error Timesec
130.26 2004 0 1
205.205 5161 0 2
Million Floating Points per Second MFLOPS -- 205.205
Error -- 0
Floating Point Test Passed
--- Prime Number Generation Test ---
...
Version 1.0.13.64b.W
...
AVX is supported in your OS
Max AVX supported AVX2
Ops Per Sec CycleRun Error Timesec
127783 7 0 1
127401 14 0 2
Operation Per Second -- 127401
Error -- 0
Prime Number Generation Test Passed
--- Cache Test ---
...
Version 1.0.11.64b.W
...
--- Reading Cache Size ---
- Detected L1 Data Cache Size -- 32
- Detected L1 Inst Cache Size -- 32
- Detected L2 Cache Size -- 256
- Detected L3 Cache Size -- 9216
Cache Module Success
--- MMXSSE Test ---
...
Version 1.0.11.64b.W
...
--- Determining MMX - SSE capabilities ---
--- CPU FEATURES DETECTION FOR ---
--- MMX SSE ---
MMX - Intel MMX Technology Supported -- Yes
SSE - Streaming SIMD Extensions Supported -- Yes
SSE2 - Streaming SIMD Extensions 2 Supported --Yes
SSE3 - Streaming SIMD Extensions 3 Supported --Yes
SSSE3 - Supplemented SSE 3 Supported --Yes
SSE4.1 - Streaming SIMD Extensions 4.1 Supported --Yes
SSE4.2 - Streaming SIMD Extensions 4.2 Supported --Yes
--- MMX SSE capabilities check complete ---
Testing MMX
Dot Product computed using C code 506
Dot Product computed using MMX intrinsics 506
MMX Dot Product Computation Test Passed
Passed MMX Test
Testing SSE
Dot Product computed using C code 506
Dot Product computed using SSE intrinsics 506
SSE Dot Product Computation Test Passed
Passed SSE Test
Testing SSE2
Complex Product computed using C code 23.00 -2.00i
Complex Product computed using SSE2 code 23.00 -2.00i
SSE2 Complex Product Computation Test Passed
Passed SSE2 Test
Testing SSE3
Complex Product using C code 23.00 -2.00i
Complex Product using SSE3 code 23.00 -2.00i
SSE3 Complex Product Computation Test Passed
Passed SSE3 Test
Testing SSSE3
SSSE3 Absolute Value Tests Passed
SSSE3 Arithmetic Tests Passed
SSSE3 Dot Product Test Passed
Passed SSSE3 Test
Testing SSE4.1
SSE4.1 Blend Tests Passed
SSE4.1 Min Max Tests Passed
SSE4.1 Insert Bit Tests Passed
SSE4.1 Extract Bit Tests Passed
SSE4.1 Bitwise Comparison Tests Passed
SSE4.1 Dot Product Test Passed
SSE4.1 Arithmetic Tests Passed
SSE4.1 Bit Conversion Tests Passed
SSE4.1 Bit Compare Test Passed
Passed SSE4.1 Test
Testing SSE4.2
SSE4.2 Bit Compare Test Passed
SSE4.2 Calculate Bit Set to 1 Test Passed
SSE4.2 CRC Test Passed
Passed SSE4.2 Test
MMXSSE Module Success
--- FMA3 Test ---
...
Version 1.0.10.64b.W
...
--- CPU Features Detection ---
FMA3 - Supported -- Yes
Testing FMA3....
FMA3 Test Resu...
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Hi Phantom160: Thank you very much for providing that report. There is a setting on the BIOS on the Intel boards that is called Intel® SpeedStep that allows the clock speed of the processor to be dynamically changed by software. Please get in the BIOS and look for that option, if it is enabled, disable it or the other way round.
If after trying that step the problem persists or if the option it no showing on your BIOS, then the next thing to do, if you have the option of course, will be to test your board with a different processor or test your processor on a different board. Otherwise please get in contact directly with Intel to claim the warranty on the unit:
Chat support:
http://intelsupportchat.force.com/icslivechat/ics_tech_processor_ww_english_Chat http://intelsupportchat.force.com/icslivechat/ics_tech_processor_ww_english_Chat,
For phone support, depending on your location, you will see the contact information on the links below:
EMEA contact information: https://www.intel.com/content/www/us/en/support/contact-support/emea-contact.html https://www.intel.com/content/www/us/en/support/contact-support/emea-contact.html
APAC contact information: https://www.intel.com/content/www/us/en/support/contact-support/apac-contact.html https://www.intel.com/content/www/us/en/support/contact-support/apac-contact.html
LAR contact information: https://www.intel.la/content/www/xl/es/support/contact-support/lar-contact.html https://www.intel.la/content/www/xl/es/support/contact-support/lar-contact.html
North America: Phone Number 1-916-377-7000, Monday – Friday 7:00 AM to 5:00 PM (Pacific Time).
Any questions, please let me know.
Regards,
Alberto R
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The new version of BIOS was posted on ASRock website yesterday (v1.5, posted on 11/28/2017). I updated the BIOS and the problem was solved. I confirmed that the CPU operates at clock speeds above 2.8GHz using CPU-Z right after restart, without running any benchmarks. As a matter of fact, the clock speed showed 4000MHz (which is an amazing improvement)
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Phantom160: Perfect, excellent, thank you very much for letting us know that information, we are glad to hear the problem got fixed with the new BIOS from ASrock and now the PC is working properly.
Any other inquiry, do not hesitate in contact us again.
Regards,
Alberto R
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