Author: parsec
Subject: Z97M Anniversity OC limit?
Posted: 13 Nov 2016 at 10:46am
OMGosh, seriously!?! On a 2 + 1 phase/component VRM design? I don't care how cool the heat sinks on the chips feel, you can still kill them with current draw. That the heat sinks are "nice and cool" tells me they are not working as well as you think they are.
I just ran a "wimpy" Intel IXTU stress test on my i5-6600K at 4.4GHz. The 12 phase VRM temperature was ~111° F, with three 140mm intake fans, two 140mm exhaust fans, and 120mm + 140mm fans on the CPU cooler. 111° F is warm to the touch, which I would not classify as "nice and cool", but that's just me.
Since you are asking how to potentially destroy your board, which you would eventually discover on your own I imagine (unless the UEFI protects it from destruction), I'll do that sooner than later. I have your documented request to kill your board preserved in this post.
But first my modified Disclaimer, borrowed from ASRock:
Have you configured these options in OC Tweaker to their maximum settings? Higher numbers are moar powah.
Long Duration Power Limit
Long Duration Maintained
Short Duration Power Limit
Primary Plane Current Limit
Of course you have disabled:
CPU Integrated VR Faults
CPU Integrated VR Efficiency Mode
Power Saving Mode
Another thing you can do is install Intel IXTU, where you might be able to modify all the Power Limits and Duration's beyond what is allowed in your UEFI. Sorry, the forums link tool chokes on URLs with a '?' in them, so highlight the link text below, left click on it and select an Open option:
https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-?product=66427
I'm not suggesting this as an over clocking tool (although it is actually very good, but not considered cool by some OC enthusiasts) but as a way to achieve what you want to do. It might also show you what is causing your OC to throttle to stock speeds.
The display on the Stress Test screen, on the lower right in blue, has many options not shown by default. Click on the blue wrench icon on the far right to reveal a list of everything that can be displayed and monitored. The parameters you should monitor include:
Thermal Throttling
Power Limit Throttling
Current Limit Throttling
Motheboard VR Thermal Throttling
If you see any of those displayed as Yes during stress testing, you've reached a limit.
How long is "after a while", when the CPU switches to stock clock speeds? Assuming your CPU temperature is below 100° C, then the following would explain the change in CPU speed.
If it is a short time, under one minute, that is a UEFI/system imposed power/current limit throttle.
If it takes longer than one minute, it is probably a VR (Voltage Regulator) over temperature power throttling.
Intel recently added a list of things that their newer processors will flag as Performance Limit Reasons. My Skylake processor has 31 different Performance Limit Reasons. I forget how many my Haswell processors have. Some are not applicable to an OC, but if you want to monitor those parameters, run the HWiNFO64 Sensor display.
The first and only time I ever had any CPU thermal throttle was my i5-4670K, on an ASRock Z87 Extreme6 board (12 Phase VRM.) Hit 100C running AIDA64 stress test with a Corsair AIO cooler in a minute or two. Haswell runs hot hot hot!!![Nuke]( "Nuke")
There is Zero chance ASRock will provide a custom UEFI/BIOS to bypass any power limits that might be programmed into the UEFI. A 'Z' board should be wide open regarding power settings, but the ability of the board's VRMs to supply that power is a different situation, and certainly not a given for every board.
Subject: Z97M Anniversity OC limit?
Posted: 13 Nov 2016 at 10:46am
TAMW wrote:OMGosh, seriously!?! On a 2 + 1 phase/component VRM design? I don't care how cool the heat sinks on the chips feel, you can still kill them with current draw. That the heat sinks are "nice and cool" tells me they are not working as well as you think they are.
I just ran a "wimpy" Intel IXTU stress test on my i5-6600K at 4.4GHz. The 12 phase VRM temperature was ~111° F, with three 140mm intake fans, two 140mm exhaust fans, and 120mm + 140mm fans on the CPU cooler. 111° F is warm to the touch, which I would not classify as "nice and cool", but that's just me.
Since you are asking how to potentially destroy your board, which you would eventually discover on your own I imagine (unless the UEFI protects it from destruction), I'll do that sooner than later. I have your documented request to kill your board preserved in this post.
But first my modified Disclaimer, borrowed from ASRock:
Please realize that there are certain is a definite risk involved with overclocking on your board, including adjusting the options in the BIOS, applying Untied Overclocking Technology, or using third-party overclocking tools. Overclocking may affect your system's stability, or even most likely cause damage to the components and devices of your system. It is done at your own
risk and expense. I am not responsible for damage caused by overclocking.
Have you configured these options in OC Tweaker to their maximum settings? Higher numbers are moar powah.
Long Duration Power Limit
Long Duration Maintained
Short Duration Power Limit
Primary Plane Current Limit
Of course you have disabled:
CPU Integrated VR Faults
CPU Integrated VR Efficiency Mode
Power Saving Mode
Another thing you can do is install Intel IXTU, where you might be able to modify all the Power Limits and Duration's beyond what is allowed in your UEFI. Sorry, the forums link tool chokes on URLs with a '?' in them, so highlight the link text below, left click on it and select an Open option:
https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-?product=66427
I'm not suggesting this as an over clocking tool (although it is actually very good, but not considered cool by some OC enthusiasts) but as a way to achieve what you want to do. It might also show you what is causing your OC to throttle to stock speeds.
The display on the Stress Test screen, on the lower right in blue, has many options not shown by default. Click on the blue wrench icon on the far right to reveal a list of everything that can be displayed and monitored. The parameters you should monitor include:
Thermal Throttling
Power Limit Throttling
Current Limit Throttling
Motheboard VR Thermal Throttling
If you see any of those displayed as Yes during stress testing, you've reached a limit.
How long is "after a while", when the CPU switches to stock clock speeds? Assuming your CPU temperature is below 100° C, then the following would explain the change in CPU speed.
If it is a short time, under one minute, that is a UEFI/system imposed power/current limit throttle.
If it takes longer than one minute, it is probably a VR (Voltage Regulator) over temperature power throttling.
Intel recently added a list of things that their newer processors will flag as Performance Limit Reasons. My Skylake processor has 31 different Performance Limit Reasons. I forget how many my Haswell processors have. Some are not applicable to an OC, but if you want to monitor those parameters, run the HWiNFO64 Sensor display.
The first and only time I ever had any CPU thermal throttle was my i5-4670K, on an ASRock Z87 Extreme6 board (12 Phase VRM.) Hit 100C running AIDA64 stress test with a Corsair AIO cooler in a minute or two. Haswell runs hot hot hot!!
There is Zero chance ASRock will provide a custom UEFI/BIOS to bypass any power limits that might be programmed into the UEFI. A 'Z' board should be wide open regarding power settings, but the ability of the board's VRMs to supply that power is a different situation, and certainly not a given for every board.