Does PLL have abnormal affect on temperature sensors?
tl;dr No, not with my HW and OC profile.Who am I?
I am a PC enthusiast with no PC HW/SW qualification and no association with a company in this context.Test case
CPU: R7 1700 UA 1709PGT
MOBO: C6H rev.1.03
HSF: ThermalRight Archon IB-E X2 with 2x TY143
Case has side panel on for testing, as that is how normally rig is used. Room ambient ~25°C, internal setup as shown below.
UEFI settings were my usual 3.8/3333 Fast setup.
UA1709PGT_3.8_3333_Fast.zip 7k .zip file
Only PLL was changed from 1.8V to 1.75V and then 1.85V.Test dataRAW data zip with screenies / HWINFO CSV log1.8V PLL1.75V PLL1.85V PLLFAQi) Where do I get the stress test?
it is linked in OP of my thread in my signature.ii) Was Sense MI Skew disabled?
yes, as I have always done that on all UEFIs as gave me "realistic" temps as I have a R7 1700 with no temp offset.iii) Do you think the temperature data is correct?
IMO yes from past experience with HW/SW.iv) What was polling rate in HWiNFO?
1000ms.v) Why is your BCLK 100MHz?
I have it manually set as that in UEFI and HWINFO is set to only take a one time reading at launch, so there will be no fluctuation for BCLK.vi) Why is 1.8V PLL test screenie showing a lower min CPU socket temp compared with others?
the rig had been powered off for some time prior to testing. I had powered it on and let it idle before testing. I can only assume the variation between that test and later ones is down to case ambient / socket changed slightly via from usage. Between each test the rig was allowed to idle so temperatures at start of 1.75V & 1.85V testing should be relatively "idle" situation.vii) Why test this?
there has been much discussion on PLL changes affecting temperature readings. As I had relied on others data in past I thought it was time to test for myself and have another facet testing to compare with a R7 1800X which I will have later this week.viii) Will you be doing testing on R7 1800X?
yes.ix) Do I adjust PLL?
nope not needed to so far.x) Why adjust it?
some have gained stability with it, so I would say a owner needs to decide what they do.xi) What is a safe voltage to use?
really no idea, Elmor has touched on it's case usage in the OC PDF in OP, there is a table within his PDF with guidance.