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Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=2524 Printed Date: 27 Apr 2024 at 3:03am Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: High Cpu Temp On Z170 Only At Uefi Bios (6700k)Posted By: erezc24
Subject: High Cpu Temp On Z170 Only At Uefi Bios (6700k)
Date Posted: 26 Apr 2016 at 4:41am
i've purchased 2 models of asrock z170 chipset series motherboard.
-asrock z170 pro4
-asrock z170 extreme 4
-both with i7 6700k
both of my cpu are at 60c idle on the uefi bios without OC or xmp profile, both coolers are zalman cnps x10 which installed perfectly with arctic silver paste.
temps seems to fine under windows 10 x64 OS using asrock A-tuning or hwinfo (35c idle)
iv'e reset the bios
update both to latest ver
changed different compatible aftermarket coolers and still same result.
i hope asrock is aware of that because i think i'll RMA them unless they figure something out very soon.
Replies: Posted By: bezel
Date Posted: 26 Apr 2016 at 7:39am
Hi.
I have the same issue with my Extreme 7+ (6700k + H110i GTX Cooler). But my pc works just fine. I think its just some bug in UEFI. It doesn't show correct temp sensor readings.
Posted By: parsec
Date Posted: 26 Apr 2016 at 1:12pm
I have a Z170 Extreme7+ board with i5-6600K, and Noctua NH-D14 CPU cooler.
I'm using the latest UEFI version, 3.00, but have never seen an extreme difference in CPU temperature between using the UEFI and when booted into Windows.
Warming up lately where I live, room temperature is about 25C/77F. CPU temperature in the UEFI is 36 - 37C.
I doubt that your situation is related to you both using an i7-6700K, from the aspect of the UEFI reading the temperature incorrectly. The special registers that Intel uses to store core and CPU package temperature are the same on all Skylake processors, as well as the way the data is interpreted to show a temperature reading.
This is the first (two) posts about this situation I've seen in this forum. I imagine we would have heard about this before now if it was a common occurrence.
One difference between the UEFI and Windows environments is when in the UEFI UI, none of the CPU power saving options are active. That is, SpeedStep and any of the C States. I doubt that alone can account for the high temperatures you are getting, but it does make a difference.
If you use any of the CPU power saving options, you can test disabling them in the UEFI, and then see what your CPU temperature is in Windows.
Questions for both of you, what are you using for the fan speed control for your CPU coolers?
Do you use the standard configuration for each of your coolers? Such as for the Corsair H100i, are you using the Corsair Link software?
The ZALMAN CNPS10X has its own PWM controller it seems. There are three versions of the Zalman CNPS10X, all quite different. Do you have the Extreme, Peforma+, or Optima 2011?
Or are your fans connected to the mother boards CPU Fan headers? If so, how are you configuring the fan's speed, or what CPU fan speed profiles are you using?
The stock VID voltage (related to, but not the same as VCore) for the i7-6700K processors can be very high for some reason, at or above 1.3V. Much more than is necessary at stock or even moderate over clocks. What VCore do you show in the H/W Monitoring screen?
Posted By: Xaltar
Date Posted: 26 Apr 2016 at 1:28pm
I have noted higher temps in the UEFI on my Skylake systems but nothing close to 60c. On my Fatal1ty E3V5 Performance Gaming/OC I see temps up to 50c in the UEFI with my 6600k. I am using an Arctic Freezer 12 on that system. Once in windows however my temps dropped to 24c idle and about 62c under full load, Prime 95 + Furmark running on the iGPU. With a discrete GPU and just prime 95 I see about 55c max in OS.
When in the UEFI what are your fan (or pump for Bezel) speeds? I have seen that when I have fan profiles selected my fans seem to run at low speeds in UEFI.
A few questions to help figure out where the issue lies:
1. When in the UEFI what are your fan (or pump) speeds? I have seen that when I have fan profiles selected my fans seem to run at low RPM in UEFI on my E3V5.
2. If you set the header your CPU fans/pump are connected to to full speed does it effect your UEFI CPU temp reading?
3. When you enter UEFI is the CPU temp a fixed value or does it slowly rise and fluctuate?
The answers to these questions will help determine if the issue is a sensor bug in the UEFI or some kind of CPU overloading occurring.
-------------
Posted By: erezc24
Date Posted: 26 Apr 2016 at 3:09pm
my cpu cooler is the zalman cnps x10 performa which works perfectly on other 1151 z170 boards
like ASUS and Gigabyte (46c idle)
i have the thermaltake mozart tx with 7 120" fans and im not connecting them to cha fan , i dont need to monitor them and im not using any custom profile with no OC
cpu cooler is connected to cpu fan1 of course and even when i choose full speed the temp remain the same + the room is well air conditioned.
vcore voltage and status are fine as well and it seems that only the 6700k having trouble
im sure im not the only one with that issue, even at youtube ppl wondering about that....
Posted By: Xaltar
Date Posted: 26 Apr 2016 at 5:05pm
Thanks for the info. By the sound of it the BIOS is not reading the sensor correctly. If full fans doesn't impact it at all then it is seemingly fixed at 60c. It may be an inherent bug with the 6700k in particular because as Parsec noted his (and my own) 6600k displays more reasonable temps in UEFI.
-------------
Posted By: Eric
Date Posted: 06 May 2016 at 12:39am
I have a Noctua D14 with a 6600K and an extreme7+ at stock speeds (for now). In UEFI I get a consistent temperature that hovers around 42° which strikes me as a little on the high side. In windows with nothing going on, RealTemp shows all four cores around 16-18° which is below ambient!
I'm not going to quote any numbers from in-OS testing with the CPU loaded as I'd be going from bourbon-addled month-old memory, but I do remember the numbers seemed all over the place, and concluded that perhaps RealTemp was not compatible with skylake or something. I was not able, after minutes of research, to confirm that hypothesis.
I haven't tried any other utilities to see how they complare to realtemp, but so far, UEFI is the only thing that seems to give believable temperatures.
Posted By: parsec
Date Posted: 06 May 2016 at 11:52am
erezc24 wrote:
my cpu cooler is the zalman cnps x10 performa which works perfectly on other 1151 z170 boards
like ASUS and Gigabyte (46c idle)
i have the thermaltake mozart tx with 7 120" fans and im not connecting them to cha fan , i dont need to monitor them and im not using any custom profile with no OC
cpu cooler is connected to cpu fan1 of course and even when i choose full speed the temp remain the same + the room is well air conditioned.
vcore voltage and status are fine as well and it seems that only the 6700k having trouble
im sure im not the only one with that issue, even at youtube ppl wondering about that....
Ok, you are using the ZALMAN CNPS10X Performa, a standard single tower cooler, five heat pipes, one 120mm fan, 900 - 2,000RPM without the quiet mode fan speed reducer, which results in 900 - 1,350RPM when used.
"Choosing
full speed" for your CPU Cooler, on the CPU_FAN1 header and the CPU
temperature remains the same? What does that normally mean when seen in a
forum post about a CPU temperature issue?
A problem with the CPU cooler (fan speed), its mounting and contact with the CPU's IHS, use of too much TIM.
No CPU cooler fan speed readings in the UEFI
or OS, no VCore or VID readings in the UEFI or Windows? You simply say
they are fine, someone else can say they aren't, who is right?
Have
you ever considered that your mounting of your CPU cooler was not
perfect this time? I know the one I just did on the PC in the picture
above is not perfect, since the fourth core is higher than it should be.
On the other hand, the i7-6700Ks have been a bit weird from the start. Super high VIDs for stock clocks (~1.4V). A strange shortage of them at retailers in the USA when first released. If you've seen this situation with several ASRock boards and UEFI versions for those boards, what is the one variable that has not changed? Your CPU. That's another reason I am skeptical about this.
Do you auto-run A-Tuning in Windows... why do I keep asking.
Xaltar, do you recall DooRules having a CPU temperature issue in the UEFI with his i7-6700K? I don't.
Another thing which I forgot to mention, and a question for those in this thread: What is the single CPU temperature reading, compared with or relative to the four core temperature readings we can find in many hardware monitoring programs that runs in Windows?
Eric's post about his CPU temperature in the UEFI and the core temperatures in Windows is a perfect example of the difference between these two things. Here's an example from an older PC I'm randomly using today, my ASRock Z77 Extreme4 with an i5-3570K:
At the bottom left is a program that shows which C State the CPU cores
are operating in. Note I'm in 100% C0 state when the screen shot was
taken, so no CPU power saving options active. Earlier, while I had the
same instance of the HWiNFO64 monitoring program running, with all the C
States enabled, you can see my minimum core temperatures. 16° C for
Core 0 is pretty crazy low. This is using a Scythe Mugen II CPU cooler
with modified mounting hardware.
We can see the difference in
core temperatures with C States enabled and disabled. Over twice the
temperature for some cores with C States disabled.
HWiNFO64 also displays the CPU Package Temperature and the CPU temperature from the PECI, the Intel Platform Environment Control Interface to
the CPU. PECI uses a direct connection to the DTS temperature readings
in the CPU, and uses the processor's internal PROCHOT value for
temperature calculation, so is not affected by modifications to that
reference value that can be done in the UEFI or OS.
We can see
the two single CPU temperatures and the individual core temperatures are
all somewhat different. So what do we see in the UEFI? Most likely the
CPU (PECI) reading.
By the way Eric, I use a Noctua
NH-D14 CPU cooler with the same CPU and mother board as you do. I also
get sub-ambient temperature dips in my core temperatures at idle when
using the CPU power saving features.
Have you ever had a piece of
metal like a wrench sitting on a wooden desk or workbench, inside your
home? Touch the wooden desk, it's not cold. Touch the wrench and... it's
cooler, isn't it? It feels cooler, since metal is a great conductor of heat, which is why it is used in heat sinks. I have no problem believing momentary,
small sub-ambient core temperatures, I used to see them on my i7-2600K
which only had the C6 C State. Skylake has C7, which shuts down a core
even farther. Plus the accuracy of the core temperature readings are
less accurate at lower temperatures, according to Intel.
Notice now that we have one vote from Eric that the temperature in the UEFI is correct... oops, using an i5-6600K.
Finally, I recall a similar "issue" with an Asus P67 board I had. Owners complained about higher CPU temperatures in the UEFI/BIOS compared to Windows. This was a board used with the first Sandy Bridge processor generation released by Intel, which was quite different than previous generations. Differences like the temperature reading in the UEFI/BIOS were to be expected, such as which temperature value was displayed in the UEFI/BIOS. Owners just kept complaining.
So after a UEFI/BIOS update for that board, I noticed the CPU temperature in the UEFI went down 10° C compared to the previous UEFI version. Not about 10° C, exactly 10° C. I could load the previous UEFI version again, and the CPU temperature in the UEFI went up 10° C. I was getting CPU temperatures in the UEFI in the low 20s C with the new UEFI version.
The funniest thing was, I could see the adjusted CPU temperature using HWiNFO64. I had a 14° C CPU temperature reading, but also a correct reading of 24° C. Changing the UEFI version would cause that temperature reading to change in HWiNFO64 too.
I created a support ticket about this, but never received any reply. Meanwhile, the complainers were happy and stopped complaining.
Posted By: milchuck
Date Posted: 13 Jun 2016 at 2:53am
Recently built computer, pairing AsRock Extreme 7 with 6700K and Noctua NH-D15S. Everything runs well and the cooler is huge but have the same unusual CPU temp readings....UEFI shows CPU as 55-56C while Core Temp and Real Temp both show around 26-28C idle.
Posted By: parsec
Date Posted: 13 Jun 2016 at 9:03am
milchuck wrote:
Recently built computer, pairing AsRock Extreme 7 with 6700K and Noctua NH-D15S. Everything runs well and the cooler is huge but have the same unusual CPU temp readings....UEFI shows CPU as 55-56C while Core Temp and Real Temp both show around 26-28C idle.
This is explained in detail above, mainly in the post directly before yours.
CPU temperature is always higher in the UEFI/BIOS, than when in the OS/Windows. It's been that way with every PC I've ever built over the years. No one has ever noticed this until now?
What's your VCore reading in the same screen, H/W Monitor? Are you using default processor voltage settings?
What is actually unusual is the stock clock Intel VID for Skylake i7-6700K processors. A VID of 1.4V is common, and a VCore value close to that is to be expected. That is different than all earlier Intel processor generations, and much greater.
I guess Asus was right after all. Explaining why the CPU temperature is higher in the UEFI/BIOS does not make any difference. The temperature reading just needs to be lower.
Posted By: milchuck
Date Posted: 13 Jun 2016 at 10:24am
Yea I read that, I was only chiming in that I was having the same issue and what my readings were to further the premise that this isn't an anomaly.
Posted By: clubfoot
Date Posted: 13 Jun 2016 at 10:51am
Just my .02c,...Yes, I can confirm that the i6700k shows 50c in the UEFI, sometimes higher,...all BIOS defaults no overclock,...and yes this is normal for this board and UEFI. H110i pump at full voltage, fans at balanced profile.
Funny thing is once I get everything installed and running (new Win10 install BTW) and o/c to 4.6GHz cpu and 3466MHz ram it idles at 35c in the UEFI with c states off. And yes, Real Temp shows cpu cores at 18, 22, 20, 17 at idle in Windows.
Hardware info seems to be closer to reality with ambient temp at 24c:
Posted By: andros11
Date Posted: 25 Jul 2016 at 2:11pm
I don't know if you found the reason but if you change the Boot Performance Mode under OC Tweaker -> CPU Configuration to Max Battery ("Max Battery mode will set CPU ratio as x8 until OS handoff") you should get lower temps since it does exactly that. It could potentially cause other problems though like locking the ratio to 8 even after handoff to OS.
Just do a search for "Boot Performance Mode" in the Forums, others had problems with that enabled.
Andreas
Posted By: parsec
Date Posted: 25 Jul 2016 at 10:00pm
clubfoot wrote:
Just my .02c,...Yes, I can confirm that the i6700k shows 50c in the UEFI, sometimes higher,...all BIOS defaults no overclock,...and yes this is normal for this board and UEFI. H110i pump at full voltage, fans at balanced profile.
Funny thing is once I get everything installed and running (new Win10 install BTW) and o/c to 4.6GHz cpu and 3466MHz ram it idles at 35c in the UEFI with c states off. And yes, Real Temp shows cpu cores at 18, 22, 20, 17 at idle in Windows.
Hardware info seems to be closer to reality with ambient temp at 24c:
The most important temp is your load temp!
So you have both seen a high CPU temperature while in the UEFI, and after a new OS installation, you don't see that anymore...
I believe you, but that just doesn't make sense. I still have never seen this happen with my board. I tend to use the non-Turbo setting of the Boot Performance Mode option. I'll need to try the Turbo mode option.
I'm starting to think this is related to the i7-6700K. Or it is a UEFI bug, since the CPU temperature should stabilize quickly while using the UEFI UI. Unless somehow the load on the CPU increases over time while in the UEFI.
Did you (and others with this issue) notice (or recall) the CPU fan speed changing along with the CPU temperature, as I would think it would?
So you too get the super low core temps with a Corsair AIO CPU cooler. I always wondered if that was just me, or something with the board I was using, besides my theory about why it happens. Thanks for that and the other information!
Posted By: Souths1der
Date Posted: 10 Aug 2016 at 10:20pm
I recently switched to a Z170 OC Formula from an MSI Z170 Gaming M7 because I'm getting a little more into OC'ing. I did a little on the MSI, but felt limited. This post may highjack this thread, but it is related I believe, in that the temp sensors don't seem to be functioning correctly on my board.
I don't know if we're calling the discussion in this thread an "issue" but this is happening to me, and I'll take it just a tad further. In the BIOS, my temp also reads ~50° C. In windows, I get different temp readings in Realtemp/HWInfo (these two read the same) and Speedfan (which oddly only reads Core0, 1). A recent quick run on Prime 95 on stock setting with no OC and with a 4.9 OC:
Furthermore, this is about 15-20°C higher than on my MSI board. I'm running a custom water loop, 480 radiator that cools CPU and GPU.. At first I thought maybe the TIM didn't spread right, so I took it apart, it looked good, but maybe it wasn't. No change with the new application. Idle temps in windows look fine, and the temps drop fast when I kill P95. I used the same stable 4.9 OC settings I used on my MSI board, and while I never got an error and seemed stable, I was hitting 100°C on all cores. I would top out at 82°C on the MSI with that OC. Side note: my times on benchmarks are so much better though, on a couple my times on stock with no OC are dangerously close to the 4.9 OC on the MSI
This is my first OC focused board so I thought maybe these temps are normal, but I've been reading and the temps don't seem normal.
Thoughts?
EDIT: Forgot to mention I'm also having a BIOS issue, which strengthens my thinking that something may be wrong with this board. http://forum.asrock.com/forum_posts.asp?TID=3204&title=bios-slow-on-z170-oc-formula" rel="nofollow - http://forum.asrock.com/forum_posts.asp?TID=3204&title=bios-slow-on-z170-oc-formula
Posted By: parsec
Date Posted: 12 Aug 2016 at 12:56am
Let me first say that I'm not saying this apparent problem with the CPU temperature in the UEFI, which so far seems isolated to the i7-6700K, does not happen. I was skeptical at first but after having more users post their similar results, this has my attention.
The way Intel provides processor core and CPU temperature data has been standardized for years now, and is not different between processor generations (ie, Sandy Bridge, Ivy Bridge, Haswell, Skylake, etc) and certainly not different between different models of processors of the same generation. Which means a simple UEFI bug is unlikely.
The reason for an issue with the UEFI that only occurs with one processor model (apparently) will be virtually impossible for users to identify. We can see the affect, but finding the cause is most likely beyond what we are capable of doing, since we don't have access to the internal operation of the UEFI code, CPU microcode, etc. If we can't know the cause, what can we do to make the case that this is a UEFI bug and not something that is caused by the user. "Caused by the user" still could be a UEFI related problem, such as if a certain UEFI option is enabled or disabled that causes the CPU temperature to increase over time. This is not the user's fault.
My point is if we can show that it is not something the user is doing wrong, then we have made a better case that it is the UEFI that is the problem. Xaltar basically made this point in his first post in this thread, on page one.
When we are looking at the H/W Monitoring screen, we have all kinds of information potentially related to why the CPU temperature could increase over time. That is:
VCore: Does not change substantially. Is it high or at a reasonable value?
VCCSA: Is it static (not changing) and not high?
VCCIO: Is it static and not high?
DRAM Voltage: Is it static and not high? The DRAM voltage setting can be different than the reading.
CPU Fan 1 speed: Is it low? Does it increase as the CPU temperature increases?
CPU Fan 2 speed: Is it low? Does it increase as the CPU temperature increases?
For liquid CPU coolers: If the pump is connected to a mother board fan header, is the pump running at the correct speed? Does the pump speed change? Should the pump speed change?
Does any reading on this screen seem to be changing or not changing, if it should or should not be changing?
For example, if VCore increases, or changes substantially, that would seem to be a UEFI problem. VCore should not change while in the UEFI UI, except for a small +/- amount in the 0.0X range.
Or if the CPU cooler fan speed(s) do not change as the CPU temperature increases. While that could be caused by a CPU fan speed configuration, I would think a user would know they are using a relatively static CPU fan speed, which will result in a wider range of CPU temperatures.
If the CPU fan speed configuration is one that will increase its speed with relatively small increases in CPU temperature, but as the CPU temperature increases the CPU fan speed remains the same, then something is not normal or working as it should be.
Unfortunately, if the CPU temperature being displayed is not what the CPU temperature actually is, how do we know that? The only clue would be the CPU fan speed not increasing.
Regardless, it is clear to me that this is a terrible situation for the user and the UEFI engineer to deal with. Which is why it will help everyone involved if we can provide as much information about it as possible. Assuming you care to participate.
I did some testing of the Boot Performance Mode option, that I normally set to Max Non-Turbo Performance. I went into the UEFI UI with this option set to that setting, and also with it set to Turbo Performance. In both tests I had the H/W Monitoring screen displayed, and walked from the PC for about 45 minutes. I wrote down the CPU parameters at the start and end of that time period. This was with my i5-6600K at 4.4GHz, DRAM at 3200.
Boot Performance Mode set to Max Non-Turbo Performance:
Start:
CPU Temperature: 40C.
Mother Board Temperature: 30C.
VCore: 1.104V - 1.120V.
DRAM Voltage: 1.352V.
VCCIO Voltage: 1.128V.
VCCSA Voltage: 1.168V.
End:
CPU Temperature: 38.5C.
Mother Board Temperature: 30C.
VCore: 1.104V - 1.120V.
DRAM Voltage: 1.352V.
VCCIO Voltage: 1.128V.
VCCSA Voltage 1.168V.
Boot Performance Mode set to Turbo Performance:
Start:
CPU Temperature: 44C.
Mother Board Temperature: 29C.
VCore: 1.20V.
DRAM Voltage: 1.352V.
VCCIO Voltage: 1.128V.
VCCSA Voltage: 1.168V.
End:
CPU Temperature: 43.5C.
Mother Board Temperature: 29C.
VCore: 1.20V.
DRAM Voltage: 1.352V.
VCCIO Voltage: 1.128V.
VCCSA Voltage: 1.168V.
Yeah, should of done UEFI screenshots, I can do that...
So for me, no major difference or CPU temperature problem when using the two Boot Mode Performance settings, with my different CPU. Again, not saying it does not happen to others.
Posted By: emil2424
Date Posted: 10 Sep 2016 at 3:19am
I welcome,
I have the same problem, 50 C in UEFI (2.6 and 3.2 version), and in Windows ~ 30C.
My PC:
Intel Core i7-6700K
Thermalright Macho rev. B
ZOTAC GeForce GTX 1080 AMP! Extreme Edition ASRock Gaming K4 G.Skill TridentZ DDR4, 2x8GB, 3200MHz, CL16 (F4-3200C16D-16GTZ) DC mode + XMP off = 2133
SSD GoodRAM Iridium Pro 240 GB EVGA 750W SuperNOVA G2
Nzxt H440 (1x 140 fan BACK + 3x 120 fans FRONT all without RPM control)
HDD WD Red 2TB
Video from UEFI:
CPU Fan is from Thermalright Macho rev. B and FAN3 is be quiet! PURE WINGS 2 120mm on TOP, so I have 4 Chasi FAN + 1 extra fan + 1 CPU FAN Foto form Windows 10:
AIDA64 5.75.3900
I read this topic and I know about differences of the temperature in UEFI and of the ones in Windows but 20 C it probably too much.
I am having high hopes that my info will help solve a problem:)
Posted By: Xaltar
Date Posted: 10 Sep 2016 at 5:25pm
I keep seeing people reporting this so I will clarify for all who see this.
When you are in the UEFI your CPU is not idle, at least one core is being utilized constantly with monitoring and other UEFI tasks. So when you see a difference between your UEFI temp and your in OS idle temp it only makes sense that idle temps will be lower.
Operating systems are optimized to minimize CPU usage when "idle" to reduce power consumption and decrease heat output from the CPU/GPU. The UEFI/BIOS is not optimized in this way, it would require a lot more code and likely larger ROM chips for the BIOS itself.
To give an idea, I watch my CPU temps on my Z170 Pro4+ 6600k jump from 29c idle to 56c just by opening Libre Writer. It spikes up there briefly then drops to the mid 30s. If just one, rather lightweight app can cause this then it is easily understandable that the UEFI could cause the temps we are seeing. Yes, I said we, my board reports the same/similar BIOS temps.
At the end of the day, the temps are well within threshold for any CPU and go down to normal idle levels in the OS. This is not a problem, more of a misunderstanding about how the UEFI works.
I hope this eases the minds of those concerned about this
erezc24 wrote:
And yes, Real Temp shows cpu cores at 18, 22, 20, 17 at idle in Windows.
