Jump to content

Confusing FX-8320 Temp. Readings

Interfectorem
 Share
Posted

Hello everyone, I have an AMD FX-8320 (Stock 3.5GHz undervolted to 1.275v) cooled by a Cooler Master Seidon 120m (Push-Pull Corsair SP120 Perf.) So I open up HWMonitor and my Ambient temp is give or take ~1C, 27C. Under the Temp section of my MOTHERBOARD list, it states that I'm at 31C while idling, which is good. However under the standalone "AMD FX-8320" list, the "Package" temp varies 12-16C. which is not correct since my ambient is 27C.

 

 

 

So when I start up Prime95 Small LFFT, I max out at 51C under the Temp section of my MOTHERBOARD, however my "AMD FX-8320" list, the "Package" temp is 35C. The "CPU" temp under the Motherboard dropdown list seems more accurate than the "Package" temp. If anyone knows anything I should know, I would greatly appreciate the help, thanks.

 

Intel Core i7-5820K (4.4 GHz) | Gigabyte GTX 970 G1 Gaming | Corsair Vengeance LPX 16GB  | 2x 360mm Custom Loop (Noctua iPPC) | ASRock X99 Extreme6 | Samsung 840 EVO 250GB | Fractal Design Define S | Corsair HX750 | Windows 10 | Corsair M65 RGB PRO | Corsair K70 RGB LUX (CherryMX Brown) | Beyerdynamic Custom One Pro & Creative Sound Blaster Z | Nexus 6P (32GB Aluminium) | Check out my setup: Project Kalte Here!

Link to comment
https://linustechtips.com/topic/199353-confusing-fx-8320-temp-readings/
Share on other sites
Link to post
Share on other sites
Posted
  • Author

Motherboard is an Asus M5A99FX PRO R2.0 BTW.

Intel Core i7-5820K (4.4 GHz) | Gigabyte GTX 970 G1 Gaming | Corsair Vengeance LPX 16GB  | 2x 360mm Custom Loop (Noctua iPPC) | ASRock X99 Extreme6 | Samsung 840 EVO 250GB | Fractal Design Define S | Corsair HX750 | Windows 10 | Corsair M65 RGB PRO | Corsair K70 RGB LUX (CherryMX Brown) | Beyerdynamic Custom One Pro & Creative Sound Blaster Z | Nexus 6P (32GB Aluminium) | Check out my setup: Project Kalte Here!

Link to post
Share on other sites
Posted

AMD CPUs don't have a teperature probe in the CPU (since AM2 I believe), so it is calculated using power consumption and other info. This method is worse at the low end.

This means that some software doesn't get the CPU temperature correct, or flat out doesn't work with certain motherboards.

You should try some other software like HWiNFO32/64, RealTemp and since you have an AMD board check it with Asus AI Suite, I usually find it's reliable.

"PSU brands are meaningless, look up the OEM."

Link to post
Share on other sites
Posted

AMD CPUs don't have a teperature probe in the CPU (since AM2 I believe), so it is calculated using power consumption and other info. This method is worse at the low end.

This means that some software doesn't get the CPU temperature correct, or flat out doesn't work with certain motherboards.

You should try some other software like HWiNFO32/64, RealTemp and since you have an AMD board check it with Asus AI Suite, I usually find it's reliable.

 

AMD CPU's (including the 8320) do have a core temperature sensor, but it is inaccurate below 40C.

Case: Phanteks Enthoo Pro | PSU: Enermax Revolution87+ 850W | Motherboard: MSI Z97 MPOWER MAX AC | GPU 1: MSI R9 290X Lightning | CPU: Intel Core i7 4790k | SSD: Samsung SM951 128GB M.2 | HDDs: 2x 3TB WD Black (RAID1) | CPU Cooler: Silverstone Heligon HE01 | RAM: 4 x 4GB Team Group 1600Mhz

Link to post
Share on other sites
Posted

AMD CPU's (including the 8320) do have a core temperature sensor, but it is inaccurate below 40C.

Do you mind me asking who's face that is on your profile pic? Sorry if it's obvious but I don't know everything.

 

Spoiler

i5 4670k, GTX 970, 12GB 1600, 120GB SSD, 240GB SDD, 1TB HDD, CM Storm Quickfire TK, G502, VG248QE, ATH M40x, Fractal R4

Spoiler

i5 4278U, Intel Iris Graphics, 8GB 1600, 128GB SSD, 2560x1600 IPS display, Mid-2014 Model

Spoiler

All the parts are here, just need to get customized cords to connect the motherboard to the front panel.

Link to post
Share on other sites
Posted

Do you mind me asking who's face that is on your profile pic? Sorry if it's obvious but I don't know everything.

 

It's a Kappa off twitch.tv, a chat "emoticon". Used to signify sarcasm, a joke or something that is plain silly.   :D

Case: Phanteks Enthoo Pro | PSU: Enermax Revolution87+ 850W | Motherboard: MSI Z97 MPOWER MAX AC | GPU 1: MSI R9 290X Lightning | CPU: Intel Core i7 4790k | SSD: Samsung SM951 128GB M.2 | HDDs: 2x 3TB WD Black (RAID1) | CPU Cooler: Silverstone Heligon HE01 | RAM: 4 x 4GB Team Group 1600Mhz

Link to post
Share on other sites
Posted

Do you mind me asking who's face that is on your profile pic? Sorry if it's obvious but I don't know everything.

It's the Josh Kappa face from twitch. I used google image search :P

 

https://www.google.com/search?tbs=sbi:AMhZZivXSN4fgq4LfsyiNPt3vMMKK71rpOqyoL-Y4NBa9vXHouh3Yc8j4-JW0NMU3Ybu_1hxEO_1DPnPDLuVILyKk5_1Qy2puD6NEq_1Hnbm8IIue1qWRkVKrh5l655-u44TENc8tyc22cz6urHrb3JdAGJFN8tAr-tSO9a4xY5ljU7B-ihbmz7-0IUxOW4l4eqzdTgYNwNLPGDb4fwDJw-5of3wypFk0QzkbWEOPdxTND5df1M_16zlyVOztZXnWqzNLAVniMKWUOKkUjlrYl0IXgmYnA7uEHim5pwSuXKj59WacmfBOAmOUOotNmSXyW-2iJAoZjoPXVGRPUbUvnACqKtpeXb9httIznqi6FGQum0eA_1ofwYYXyvPW-qVonLM6YFR9Xa5ofzrMX2hQQst5zNDAYH9cdvjasC2AsowlcBuG-rli9Z8EGw-UxtvEyIUjvD0Q6-zYY8dUe5a3ueYCBDcn1iZpwb6DEmz3usUqwVFZ0M9Wb5rfVD-oRCLYxAwmASrjlT_1PMYmB2SbSKdOg-HHW5jH7lNY9Y2E18IpzhKuAZwL0ezc9rQKlqkvs47mXhohAEb8jpGrfyI1t1-2lK3ljf54PJmsmZCoVRjiN45ij58957w-sOyS_1mVVm72rx97lnj27Lycmuq9yHxXUAtnndvtQ5g5ZFBmZf7SsA3HtjP_1pmpCOSaBVkzN0BKOpl5Iaytj6cTbP8BS-uDweHs5tDAycEEecvjKh8qGtn7u8MhGSFicSdI0JDTB-3lO9YgDdYj2O7FjHDDMdRiKliNG4NlclYDvlcFswwkfqZ_10D_1Olma-HbvwWu3fB-N3vHDNIcm20duc-QJZXIw0rGNZ7YaNBnnhvblBE4fMYPbvOiCGEhdj_1W4DIFrNqdQpgPn1eXY7asPgDNexk4J_1sYU_1ogIQ9xX9Thss-jEvNyUx78XOwHRo0jvKuICbvbtFzpFsY3CI2AN1j6ZdyUkVTh8VP6eST_1bvXqSHENQZenpDh9TLSmVS5wnzksm7tbbSjjDJO6cIN6_1SUfRypxXeoaV_1FS3UokmjNkQIlm0b8SRwHimxo1OBxWiE2b1goq_1Qfrxlj0hHtNYY6bHWZSAlfCNLkv65qqG8EagDF0-D6pSxLGkrtbxIse8AN_1owlPUJX2nz3alFTBx8r2qQoviIT3sSAXCtmJbbDJycJnDybHGQmGq-WEV66JotBnOY2qwEwJ-Jsvq6ZvcmdwzuV43NZ-oDpx9FjXFRRQSEz8ognpBWTF4RcQg1-EXK8jUj4YZO0kwFPJLMt0Nq4pV5Otg_1BCqF1fDZR6iZMVDzv1ECUvcpG0c8w7EGx1VT6U9DJ4FHbiKwrMFtPSzN2emaJ-px09rZt41c6tlu0jTtjihr1ybKACti1INbRhAdCFh18e_1vAKMEMCnf1MUvZiVzwzhra8G0vKsGMTTn45Mk0qqQHy5jhwZH4cVHbDuY7CZvTKBEpLRknFFdzXjLray-NSlzpO9g_18Irr4MpFrcQkyD_1KvjKdIZZOC4FMuTCFQaRqFRMuUtme961Kik6AJftcsFITWDhoC2WafbzA5jP6w

LGA775 Overclocking Guide - LGA771 to LGA 775 mod - Rigs in spoiler - Subzero Overclocker - HWBOT - Sandybridge-E Frequency WR Holder

Link to post
Share on other sites
Posted

AMD CPU's (including the 8320) do have a core temperature sensor, but it is inaccurate below 40C.

I don't think there actually is a temperature probe on the CPU die, but on the socket. You are quite right that it is often wrong below 40C, but I have found that some programs are closer than others (seemingly randomly) and Asus AI Suite tends to be very good.

"PSU brands are meaningless, look up the OEM."

Link to post
Share on other sites
Posted

I don't think there actually is a temperature probe on the CPU die, but on the socket. You are quite right that it is often wrong below 40C, but I have found that some programs are closer than others (seemingly randomly) and Asus AI Suite tends to be very good.

 

I'm pretty sure there is a core temp sensor on the die. I'll try and find a concrete answer.

Case: Phanteks Enthoo Pro | PSU: Enermax Revolution87+ 850W | Motherboard: MSI Z97 MPOWER MAX AC | GPU 1: MSI R9 290X Lightning | CPU: Intel Core i7 4790k | SSD: Samsung SM951 128GB M.2 | HDDs: 2x 3TB WD Black (RAID1) | CPU Cooler: Silverstone Heligon HE01 | RAM: 4 x 4GB Team Group 1600Mhz

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing CPUs, Motherboards, and Memory

×