Overclock.net › Forums › Intel › Intel CPUs › == Haswell-E Overclock Leaderboard & Owners Club ==
New Posts  All Forums:Forum Nav:

== Haswell-E Overclock Leaderboard & Owners Club == - Page 1952

post #19511 of 22164
Quote:
Originally Posted by sexpot View Post

^1.4V cache is looking to degrade/kill that cpu very quickly. It's best to manually set cache voltage in the range of 1.2 ~ 1.25v. Some have gone up to 1.35 but that's up to your discretion.

Holy moly! omg thanks man! So I'm new to this overclocking and correct me if I'm wrong, but I guess the auto settings on the mobo pulls the voltages from the VID tables on the CPU. Since I had my cache at 45x, I guess it defaults to >1.4v for that multiplier if I have it set to auto. I guess HWINFO doesn't state the cache voltage? Anyway, I'll set the cache to adaptive mode instead of manual since I want to run my min cache to auto and have the max set to whatever I can get it stable at 1.25v.

No wonder I couldn't get Linux to boot! It was probably going through a kernel panic that's why the computer would shut off. My OC was probably not stable but strange how AIDA64 didn't crap out. Maybe because the cache was at >1.4v lol but don't know why Linux was more finicky about it. Anyway, do you think I just degraded the crap out of my CPU? I've only been stress testing for about a week. Do overvoltaging immediately degrade it or it all "depends"?

Thanks!!!
post #19512 of 22164
Quote:
Originally Posted by mOUs3y View Post

yeah i was really shocked. In HWinfo i thought cache voltage was VTT because it was hovering at 1.1v during the stress tests. It is strange the ASUS auto option overvolts more than the rated intel voltage when set to auto. I swear though, when i boot into bios before, auto voltage of the cache was always like 0.9; i've been trying to install linux to no luck and have been rebooting like crazy but that shouldn't cause that voltage to auto to 1.4. Anyway, i'll just set it to a manual voltage. Too bad I don't know what was voltage of the cache was when i passed my 24 hr stress test so I don't have to stress test again, unless VTT is really the cache voltage?

vtt = cpu io volts (NOT system agent)
cache = cache or uncore
post #19513 of 22164
Quote:
Originally Posted by mOUs3y View Post

Anyway, I'll set the cache to adaptive mode instead of manual since I want to run my min cache to auto and have the max set to whatever I can get it stable at 1.25v.

Don't use adaptive cache. It is not a functional control system. You have to let it ride on Auto or use the offset. You will also have to figure out how large an offset bump you need to reach your target voltage. Each CPU has it's own default cache voltage. You may need something between 0.20 and 0.30 to reach 1.25v -- if that is your target for the chosen frequency.
Edited by XTAC - 6/24/16 at 2:03pm
post #19514 of 22164
FWIW, I run fully manual mode off but set a manual voltage on my cache. Cache downclocks and downvolts from 4.4GHz 1.2v to 1.5GHz 0.6v and everything in between. You may need to enable successively deeper c-states to attain this behavior. To me, though, this is more or less adaptive and works great.


Edited by ssateneth - 6/24/16 at 2:25pm
post #19515 of 22164
H
Quote:
Originally Posted by XTAC View Post

Don't use adaptive cache. It is not a functional control system. You have to let it ride on Auto or use the offset. You will also have to figure out how large an offset bump you need to reach your target voltage. Each CPU has it's own default cache voltage. You may need something between 0.20 and 0.30 to reach 1.25v -- if that is your target for the chosen frequency.

Hi XTAC,

Ok few questions:

1. Adaptive core is ok?
2. I thought auto was ok for cache until i saw it hovering at 1.4v all of a sudden. It usually is at 0.9 in the bios/uefi. So manual is bad and just offset?
3. If I use offset, does that means I'll always be running at that voltage for the cache and it won't undervolt if i'm not actually using my max cache multiplier like how my cpu is set to throttle to save power and heat? I have my cache min set to auto.
4. For the life of me I can't see cache voltage in HWINFO. Is it named anything else? Please see attached.


post #19516 of 22164
hwinfo is great, but theres a lot of useless sensors it reports. you can hide sensors by right clicking them and hiding them, or you can use the shift + delete shortcut with the sensor selected. you can also shift left click sensors to select multiple sensors at the same time.
post #19517 of 22164
Quote:
Originally Posted by ssateneth View Post

FWIW, I run fully manual mode off but set a manual voltage on my cache. Cache downclocks and downvolts from 4.4GHz 1.2v to 1.5GHz 0.6v and everything in between. You may need to enable successively deeper c-states to attain this behavior. To me, though, this is more or less adaptive and works great.

pseudoadaptive-cache.png

Hi ssateneth,

wow my HWINFO settings must be wrong then because I can't see that cache voltage. I'm going to play around with it a bit. If i can't achieve a behavior like your's where it downclocks like that, you think running constant at 1.2v on cache is bad in terms of degradation?

btw, is the cpu and cache voltage auto settings the only voltages being pulled from the CPU VID tables? I guess what I'm asking is if it's safe for me to leave all the other voltages on auto on a asus x99 deluxe ii or are they all doing crazy voltages as well? The thing is I don't understand all the other ones and I left them at auto and only messed with three voltages: cache, vcore, and ram voltage.
Edited by mOUs3y - 6/24/16 at 2:30pm
post #19518 of 22164
Depends on what motherboard you are using. The RVE has it's own 3rd party sensor chip that hwinfo warns may cause higher CPU load than normal. If you disabled it, you'll need to find it and re-enable it (It used to be REALLY high CPU load reading from it, but recent builds have fixed that so the impact is minimal). Other motherboards may have other ways of measuring it, or none at all; depends on what you have.
post #19519 of 22164
Quote:
Originally Posted by mOUs3y View Post

Quote:
Originally Posted by sexpot View Post

^1.4V cache is looking to degrade/kill that cpu very quickly. It's best to manually set cache voltage in the range of 1.2 ~ 1.25v. Some have gone up to 1.35 but that's up to your discretion.

Holy moly! omg thanks man! So I'm new to this overclocking and correct me if I'm wrong, but I guess the auto settings on the mobo pulls the voltages from the VID tables on the CPU. Since I had my cache at 45x, I guess it defaults to >1.4v for that multiplier if I have it set to auto. I guess HWINFO doesn't state the cache voltage? Anyway, I'll set the cache to adaptive mode instead of manual since I want to run my min cache to auto and have the max set to whatever I can get it stable at 1.25v.

No wonder I couldn't get Linux to boot! It was probably going through a kernel panic that's why the computer would shut off. My OC was probably not stable but strange how AIDA64 didn't crap out. Maybe because the cache was at >1.4v lol but don't know why Linux was more finicky about it. Anyway, do you think I just degraded the crap out of my CPU? I've only been stress testing for about a week. Do overvoltaging immediately degrade it or it all "depends"?

Thanks!!!
 
Mothership
(12 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7-5820K ASUS X99 - Deluxe EVGA Nvidia GeForce GTX 960 SSC Corsair Vengeance LPX DDR4 16GB 2800 MHz C16 
Hard DriveHard DriveOptical DriveCooling
WD Black 1TB Samsung SM951 128GB PCIe SSD ASUS SATA Internal Blu-ray Drive AlphaCool NexXxoS Cool Answer 360 DDC/XT - Set 
CoolingOSPowerCase
NZXT Sentry LX fan controller Linux Mint Corsair HX850i NZXT Switch 810 White 
  hide details  
Reply
 
Mothership
(12 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7-5820K ASUS X99 - Deluxe EVGA Nvidia GeForce GTX 960 SSC Corsair Vengeance LPX DDR4 16GB 2800 MHz C16 
Hard DriveHard DriveOptical DriveCooling
WD Black 1TB Samsung SM951 128GB PCIe SSD ASUS SATA Internal Blu-ray Drive AlphaCool NexXxoS Cool Answer 360 DDC/XT - Set 
CoolingOSPowerCase
NZXT Sentry LX fan controller Linux Mint Corsair HX850i NZXT Switch 810 White 
  hide details  
Reply
post #19520 of 22164
Linux will not allow errors that Windows will accept. The errors are mostly math related, such as rounding errors, and they will cause kernel panics.
 
Mothership
(12 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7-5820K ASUS X99 - Deluxe EVGA Nvidia GeForce GTX 960 SSC Corsair Vengeance LPX DDR4 16GB 2800 MHz C16 
Hard DriveHard DriveOptical DriveCooling
WD Black 1TB Samsung SM951 128GB PCIe SSD ASUS SATA Internal Blu-ray Drive AlphaCool NexXxoS Cool Answer 360 DDC/XT - Set 
CoolingOSPowerCase
NZXT Sentry LX fan controller Linux Mint Corsair HX850i NZXT Switch 810 White 
  hide details  
Reply
 
Mothership
(12 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7-5820K ASUS X99 - Deluxe EVGA Nvidia GeForce GTX 960 SSC Corsair Vengeance LPX DDR4 16GB 2800 MHz C16 
Hard DriveHard DriveOptical DriveCooling
WD Black 1TB Samsung SM951 128GB PCIe SSD ASUS SATA Internal Blu-ray Drive AlphaCool NexXxoS Cool Answer 360 DDC/XT - Set 
CoolingOSPowerCase
NZXT Sentry LX fan controller Linux Mint Corsair HX850i NZXT Switch 810 White 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › == Haswell-E Overclock Leaderboard & Owners Club ==