Incorrect Temps (impossibly low) Athlon II

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Belial
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Joined: Fri Feb 25, 2011 3:38 am

Incorrect Temps (impossibly low) Athlon II

Post by Belial »

Specs:
Athlon II x3 (unlocked x4) 450 3.2ghz
Biostar A770E3
2x2gb Kingston HyperX 1333
GTX 460
Stock HSF
NZXT Gamma case (single stock 120 mm top rear fan, bottom PSU, many empty fan mounts and holes/ventilation)

My temperatures in Coretemp are always around 15*C idle, with lows up to 12*C at times. It is usually about 16*C with general web browsing, and maybe up to low 30s during long periosd of gaming. However, this is impossible - ambient temperature is a comfortable ~75*f, or 27*C. I know supposedly unlocking a 4th core can cause incorrect reads, but this is the exact temps with both unlock and stock.

And it's not just Coretemp - every program reads the same ~16*C. Speedfan, HWMonitor, AOD, and more.

In HWMonitor, there are TMPIN0 and TMPIN1 and TMPIN2 - I assume some sort of socket temps. TMPIN1 seems to follow my System temperature in bios at about 27*C.

Now, in Bios, my CPU temperature reads at about 36*C, maybe down to 32*C when first entering BIOS. This seems more accurate.

When running prime95 for about 10 minutes, Coretemp goes up to 55*C - which I initially thought meant my system was cool runnings. However, with a 20*C offset (making the 16*C idle to a more normal 36*C offset that seems to reflect bios) this means 75*C! You can see where my concern comes from...

I'm really not sure what to do. There's no way to really tell if Coretemp is even scaling correctly, as I believe Bios Health monitor will shut my PC down at 65*C, well below when my Coretemp+20 offset is reading 75*C. And temps usually get back to 40's within a minute or two of turning Prime95 off, so I can't really just run prime95, and then run to Bios as fast as I can.

Help! I can't even begin doing any sort of minor oc'ing if there's a possibility my system is going to 75*C at stock, and I have no idea if it's worth getting a HSF or additional cooling fans if my system is running just fine, or extremely hot.

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The Coolest
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Re: Incorrect Temps (impossibly low) Athlon II

Post by The Coolest »

First of all I would like to apologize for not replying sooner.

Temperature reading Athlon II and Phenom based processors is very tricky, basically because these processors do not report the actual temperature that the core is at.
The temperature reported is an arbitrary value, which is only used for very specific tasks on the platform, like applying more cooling when it's needed for example.

Usually the offset is around 15c, in your case it may be 20c, as you have stated.
And that would mean that your CPU gets pretty toasty when you run Prime95, and you may want to consider to improve your processor cooling.
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

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