Originally Posted by poopsLIVE
x52 / x49
1.41 bios set
2 Hours Realbench W/ Zero Errors
I think that would pretty much be the thermal limit. The 51 settings I posted earlier passed all three tests. Was about to put this through Cinebench r20 3600 sec test and see how it goes. I think this is the limit of this chip unless you have some better way of lowering the voltage. Do you think I can get away with these as an everyday streaming while locally recording and gaming rig?
If it were me, I would not stress test at those settings and I would also not exceed "Turbo" LLC at voltages that high.
I cannot assure the longevity of your CPU before it starts getting unstable eventually and then needs more vcore.
I calculated the maximum safe voltages (on-die sense voltage--VR VOUT) based on different current draw amounts; these are for people that want to be safe. Exceeding these limits could result in accelerated degradation.
All these values are extrapolated from the Intel specification documents (1.52v VCC maximum (CPU must be pulling ZERO AMPS (meaning--not subject to a clock) if VR VOUT is 1.520v!!), 193 amps maximum, with DEFAULT loadline (Intel does not allow for loadline calibration in any of its specifications). The default VRM Loadline will drop the 1520mv based on amps, down to a safe MAXIMUM level--meaning these are absolute limits (on ambient cooling).
Voltage given is at maximum load, measured on the CPU die.
193 Amps: 1.212v to 1.230v (8 core CPU + 1.6 mOhms VRM loadline, versus 6 core CPU + 2.1 mOhms VRM loadline). Value: 1520mv - ( 193 * 1.6 ) = 1520mv - 308.8 = 1211.2 mv
150 Amps: 1.280v (1520 - (150 * 1.6)).
100 Amps: 1.360v (1520 - (100 * 1.6))
50 Amps: 1.440v (1520 - (50 * 1.6))
When using loadline calibration, the mOhms of loadline is reduced (standard/Normal loadline calibration is 1.6 mOhms), so this totally changes the entire formula, but the voltage/amps target is identical, but the BIOS voltage must now be set lower.
Example: Loadline calibration=Turbo is 0.4 mOhms of loadline.
So if you had a 1.340v bios voltage set and were pulling 150 amps in Realbench, for example:
1340 mv - (0.4 * 150) = you would be pulling 1280mv load VR VOUT at 150 amps.
As you can see that matches up with the above table so you're okay.
But if your bios voltage were higher (like 1.360v) with LLC Turbo, then that's asking for trouble at 150 amps.
Extreme LLC is 0.2 mOhms of loadline, so you can see the load VR VOUT is shifted upwards.
So tl;dr: I would not feel safe running at that voltage and that loadline. I know you may be unstable with a lower LLC, but keep that in mind. You want your CPU to last awhile without needing more voltage.
I'm happy that you're stable but I would absolutely not keep the CPU at these settings. Using Extreme LLC