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5800x Temps and PBO Settings?

lost-signal

lost-signal

lost-signal

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24 Jul 2021
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3
Location
Australia
So I've had my 5800x since launch, the cooler is a Dark Rock 4 (non-pro) and as I'm sure most of you here have heard many times before, it runs toasty. Stock settings, Idle is around 40-50c, gaming upwards of 70c and cinebench multicore it very quickly hits 90c.

I adjusted my PBO settings in bio as follows:
PPT: 105
TDC: 75
EDC: 90

Idle temps sway closer to low 40's/high 30's, gaming is honestly around the same but closer to high 60's and cinebench multicore hits mid 70's/low 80's. Are these settings ok to use? Is there anything i should be concerned about? My cinebench r20 scores are 5681 multi and 621 single, are they ok scores for such PBO settings?
 
are you undervolting at all or using the curve optimiser?

Check that you are not using 100% of your PPT,TDC and EDC (hwinfo64)

Temps look fine but you could probably squeeze more out of it though.
 
lost-signal said:
So I've had my 5800x since launch, the cooler is a Dark Rock 4 (non-pro) and as I'm sure most of you here have heard many times before, it runs toasty. Stock settings, Idle is around 40-50c, gaming upwards of 70c and cinebench multicore it very quickly hits 90c.

I adjusted my PBO settings in bio as follows:
PPT: 105
TDC: 75
EDC: 90

Idle temps sway closer to low 40's/high 30's, gaming is honestly around the same but closer to high 60's and cinebench multicore hits mid 70's/low 80's. Are these settings ok to use? Is there anything i should be concerned about? My cinebench r20 scores are 5681 multi and 621 single, are they ok scores for such PBO settings?
Click to expand...
Try use those settings in conjunction with a curve optimiser negative offset.
 
I was messing about with the CO yesterday, used ^Joxeon's 125PPT, 84A TDC and 125EDC from another thread as a baseline. These settings drop the all core temps by at least 5C compared to stock for me hitting 75C in CB20 and drop the effective all core clock to ~4400 during the run. Can then try to claw back some of the performance by using the Core Optimiser. My particular chip will boot into windows with PBO on all core -25 no Mhz offset but crashes quickly. I am currently testing -15 on the 2 best cores and -25 on the rest and will see if it's stable. This produces a ~4630 effective clock during a CB20 run by comparison and gets a respectable 6137/622 in CB20.

Previous attempts using the CO have had more instabilities while idle compared to load so will take me some time to tell if it is stable or not but certainly better on recent BIOS compared to earlier on (X570 Tomahawk).
 
lost-signal said:
How much of a negative offset should I test with? Also, do the double digits refer to mV?
Click to expand...
Each -/+1 in curve optimizer reduces or increases voltage by 3-5mv depending on if it's high or low load so at say an offset of -10 the CPU will use 30-50mv less for the same clocks or if it has power and thermal headroom then it will use the same power as it did oringally but will further boost the clocks.

This is where capping the PPT TDC EDC along with curve optimizer helps when trying to reduce temps as it will mean the CPU will just boost back to or slightly higher then original clocks while using less power and less heat.

I would start with -20 and run some stress tests and if it seems stable then use the system for a while to see if you get any random reboots as a lot of the time the crashes can happen at low loads / idle when surfing the net or watching YouTube etc so it can take a while to find the perfect settings.
 
Joxeon said:
Each -/+1 in curve optimizer reduces or increases voltage by 3-5mv depending on if it's high or low load so at say an offset of -10 the CPU will use 30-50mv less for the same clocks or if it has power and thermal headroom then it will use the same power as it did oringally but will further boost the clocks.

This is where capping the PPT TDC EDC along with curve optimizer helps when trying to reduce temps as it will mean the CPU will just boost back to or slightly higher then original clocks while using less power and less heat.

I would start with -20 and run some stress tests and if it seems stable then use the system for a while to see if you get any random reboots as a lot of the time the crashes can happen at low loads / idle when surfing the net or watching YouTube etc so it can take a while to find the perfect settings.
Click to expand...
So i did try a -20 and noticed certain games freezing/crashing after a certain point, so i have it set to -15 and will test that for a while today
 
I have mine at 4.5ghz @ 1.175v. I used to run it at 1.25v but was tinkering with it this weekend and 1.175v is solid.
Must be half the stock temps, extremely cool with low fan speeds. The noise/heat at stock was doing my nut in.
 
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