Tj max is too high?

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Dreadbeard
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Tj max is too high?

Post by Dreadbeard »

Hey all, I'm new to the forum, but have used core temp for a while.

I changed mobo recently, and noticed my tj as had jumped, on my old mobo it was 70c which is the max for my cpu, now my new mobo says its 90, what's happend? Is this affecting my cpu temp read out?, as I also changed thermal paste from the stock junk, to artic silver 5.

My temps went from usual 60c in gw2 down to 50c in gw2, could the temp readout be caused by an issue with tj max, or is this actually the readout of my temps and is correct showing that arctic silver 5 actually dropped my temps by 10c, thanks.

Jorge
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Re: Tj max is too high?

Post by Jorge »

TjMax should not change based on the mobo. TjMax is the CPU theoretical max operating temp before throttling occurs.

FWIW, Arctic Silver 5 (or any of the top 25+ TIMs which are very similar in performance), is good but it usually doesn't result in a 10C drop unless the prior TIM was the really bad, old, cheap, white TIM. Poor heatsink contact or dried out TIM can cause excessive temps. The TjMax would have no impact on the "Core Temp" readings.

Dreadbeard
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Re: Tj max is too high?

Post by Dreadbeard »

Then I'm confused beyond belief.

The original tim was from the manufacturer on the stock hs and according to core temp, has droppedy temps 10c.

And with the tj max, it defiantly changed with the mobo, and that's confusing.

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The Coolest
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Re: Tj max is too high?

Post by The Coolest »

Did you replace only the motherboard or did you get a new CPU as well?
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

Dreadbeard
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Re: Tj max is too high?

Post by Dreadbeard »

Only the motherboard, the cpu has been the same since early this year.

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Re: Tj max is too high?

Post by The Coolest »

I'm not sure what to say. The TjMax is read from the processors registers. It's possible the new motherboard has a new microcode update which changes the TjMax value.
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

Dreadbeard
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Re: Tj max is too high?

Post by Dreadbeard »

Would clearing the CMOS change anything?, I know the max temp of my cpu is only 70, so I'm sticking to keeping my temps at about 50 - 52 ish.

Jorge
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Re: Tj max is too high?

Post by Jorge »

Clearing the CMOS isn't likely to change anything. You might want to contact the mobo maker and explain the situation. They might have a BIOS CPU look-up table error that is mis-identifying the CPU model and thus causing Core Temp to list the TjMax based off of a different model CPU?

Dreadbeard
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Re: Tj max is too high?

Post by Dreadbeard »

I will defiantly try that, though in core temp it's registering my cpu as the correct one, I know that the tj max isn't really an issue, I was more concerned as to if it could affect my temp readout as I thought 10c drop in temps was a bit too good to be true.

Jorge
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Re: Tj max is too high?

Post by Jorge »

A 10C drop is exceptional even for AC 5, that's why I outlined some possible causes. The TjMax indicated temp would not have any effect on the Core Temp readings though.

alsa
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Re: Tj max is too high?

Post by alsa »

Dreadbeard wrote:Hey all, I'm new to the forum, but have used core temp for a while.

I changed mobo recently, and noticed my tj as had jumped, now my new mobo says its 90, what's happend? Is this affecting my cpu temp read out?, as I also changed thermal paste from the stock junk, to artic silver 5.

My temps went from usual 60c in gw2 down to 50c in gw2, could the temp readout be caused by an issue with tj xmax sale White mltailor Halloween Wedding Gloves, or is this actually the readout of my temps and is correct showing that arctic silver 5 actually dropped my temps by 10c, thanks.
On my old mobo it was 70c which is the max for my cpu.

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