0 temp reading after overclocking

Post about bugs you find in Core Temp so they can be addressed and fixed efficiently
Post Reply
viper_carl
Registered User
Registered User
Posts: 4
Joined: Sun Mar 25, 2012 9:40 pm

0 temp reading after overclocking

Post by viper_carl »

Hi,
I have a phenom 2 1100T 6 core black edition and when I use the MSI overckock to overclock the system, the core temp shows 0! I tried to restart the program and the same thing happens! If I disable the overclock it works fine! Win 7 64 bit and core temp 64bit! Any fixes for this?

User avatar
The Coolest
Site Admin
Site Admin
Posts: 3379
Joined: Tue Feb 18, 2003 7:48 pm
Location: Tel Aviv, Israel
Contact:

Re: 0 temp reading after overclocking

Post by The Coolest »

Make sure that you disable ACC/Core unlocking options in your motherboards BIOS as this is the most common reason for the temperature sensor to stop giving out readings.
Main rig:
AMD Ryzen 9 5950X (True Spirit 140 Direct) / Mobo: Asrock Fatal1ty X470 / EVO 970 500GB + WD Blue 250GB + HDD / GPU: Dell RX 570 4GB / Mem: 2x16GB DDR4-3200 G.Skill 32GTZKW TridentZ - 32GB total / PSU: Seasonic Prime Ultra Gold 650W
NAS:
Core i7 2600K 3.4GHz @ 4.3GHz (Scythe Mugen2) / Mobo: Biostar TP67XE / 2x Inland Pro 120GB + HDDs / GPU: ATi Mach64 VT2 / Mem: 4x4GB DDR3-1600 G.Skill 8GBXL RipJawsX - 16GB total / PSU: Seasonic S12II 620W.
Secondary rigs:
Core i3 7130U / MiniPC / SanDisk SDSSDP-128G / GPU: Intel HD 620 / Mem: 1x8GB DDR3L-1600
Xeon X3430 2.40GHz @ 3.06GHz or Core i3 540 3.06GHz @ 4.0GHz (Freezer 7 Pro) / Mobo: MSI H55M-ED55 / PNY CS1111 240GB / GPU: ATI FirePro V3800 / Mem: 4x2GB DDR3-1600 G.Skill 4GBRL RipJaws - 8GB total / PSU: Seasonic S12II 620W
AMD Phenom II X4 B93 / Mobo: ASUS M2A-VM / GPU: ATI Radeon Xpress X1250 / Crucial M4 120GB / Mem: 2x2GB DDR2-800 - 4GB total / PSU: Antec 380W.

Core Temp - Accurate temperature monitor for Intel's Core/Core 2 and AMD64 processors

viper_carl
Registered User
Registered User
Posts: 4
Joined: Sun Mar 25, 2012 9:40 pm

Re: 0 temp reading after overclocking

Post by viper_carl »

I have looked for this setting and I can't see anything in there! Call me a dumby with the new BIOs, I have disabled the turbo core and it's all it will let me adjust!
Last edited by viper_carl on Mon Mar 26, 2012 3:09 am, edited 1 time in total.

User avatar
The Coolest
Site Admin
Site Admin
Posts: 3379
Joined: Tue Feb 18, 2003 7:48 pm
Location: Tel Aviv, Israel
Contact:

Re: 0 temp reading after overclocking

Post by The Coolest »

Depending on the motherboard brand, it can be called core unleashing, unlocking etc.
Main rig:
AMD Ryzen 9 5950X (True Spirit 140 Direct) / Mobo: Asrock Fatal1ty X470 / EVO 970 500GB + WD Blue 250GB + HDD / GPU: Dell RX 570 4GB / Mem: 2x16GB DDR4-3200 G.Skill 32GTZKW TridentZ - 32GB total / PSU: Seasonic Prime Ultra Gold 650W
NAS:
Core i7 2600K 3.4GHz @ 4.3GHz (Scythe Mugen2) / Mobo: Biostar TP67XE / 2x Inland Pro 120GB + HDDs / GPU: ATi Mach64 VT2 / Mem: 4x4GB DDR3-1600 G.Skill 8GBXL RipJawsX - 16GB total / PSU: Seasonic S12II 620W.
Secondary rigs:
Core i3 7130U / MiniPC / SanDisk SDSSDP-128G / GPU: Intel HD 620 / Mem: 1x8GB DDR3L-1600
Xeon X3430 2.40GHz @ 3.06GHz or Core i3 540 3.06GHz @ 4.0GHz (Freezer 7 Pro) / Mobo: MSI H55M-ED55 / PNY CS1111 240GB / GPU: ATI FirePro V3800 / Mem: 4x2GB DDR3-1600 G.Skill 4GBRL RipJaws - 8GB total / PSU: Seasonic S12II 620W
AMD Phenom II X4 B93 / Mobo: ASUS M2A-VM / GPU: ATI Radeon Xpress X1250 / Crucial M4 120GB / Mem: 2x2GB DDR2-800 - 4GB total / PSU: Antec 380W.

Core Temp - Accurate temperature monitor for Intel's Core/Core 2 and AMD64 processors

viper_carl
Registered User
Registered User
Posts: 4
Joined: Sun Mar 25, 2012 9:40 pm

Re: 0 temp reading after overclocking

Post by viper_carl »

The Mo Board is a MSI 990FXA-GD65! I disabled the core unlocking and the cool and quiet and turbo core and it still does it! I spent a while researching this and that's all I can come up with! I don't want to risk burning out my processor and just went back to standard! Wish It would work as it OC's to 3700 and it's a noticeable gain in the OS! I have a corsair H-80 and it runs at 38-40 @ full load (in standard mode)!

djhreg
New User
Posts: 1
Joined: Wed Apr 04, 2012 6:00 pm

Re: 0 temp reading after overclocking

Post by djhreg »

Just want to confirm that I had the same problem and the core unlocker was the problem.

That is, I have been using CoreTemp to debug intermittent sudden shutdowns in a new machine with a ASUS M5A99-V motherboard and a AMD Phenom II X6 1055T (Thuban) processor. After the first try with CoreTemp...it did look like it was getting a little warm when I ran my Nikon film scanner, so I invested in a heavier duty heat sink and CPU fan....which pretty much clamped the temp to under 35C.

But I was still getting the random shutdowns. After reading some more, suspicion headed to the power supply, admittedly an off brand. Yesterday I went and purchased a better power supply. Getting it installed was a major pain because I had to disassemble the entire system to get the old PS out of the case. However, I got everything back installed and tested all the peripherals....no problem. The last test was to start CoreTemp.

Hmmm...no temp. Also suddenly showing only 5 processors and not the right processor type. Ah yes. Have to force BIOS to configure. Powered off, hit del, forced BIOS into setup. Now it recognized the Phenom II properly. On the next boot, BIOS told me "6 cores activated" and when Windows came up, CoreTemp now showed 6 cores and the right CPU type. However, still no temp.

After reading this forum, I rebooted and went into BIOS again. Indeed, I found in the Advanced tab, something called "ASUS Core Unlocker" that was enabled. I disabled it. Rebooted. CoreTemp now shows the temperature properly. After a little more research, it seems that this "ASUS Core Unlocker" is supposed to find "hidden" cores, ie: manufacturer lays out a chip for "n" cores, and simply disables some of them in order to provide some different price points. In my case, this "ASUS Core Unlocker" feature does not seem to do anything useful other than disable the temperature output. I have 6 cores active with it enabled. I have 6 cores active with it disabled.

So....if CoreTemp is suddenly showing "0" two steps:

1) If the "Model" field is not showing the right CPU, you may simply need to reinitialize BIOS...especially if you have recently disconnected all power from the system.
2) If the "Model" is correct, and the right number of cores are showing up and seem to be active, you may need to dig around in your BIOS and find a useless "Core Unlocker" feature to disable.

Hope this helps,

David Hetherington
Austin, Texas

Post Reply

Return to “Bug reports”