- Joined
- Feb 6, 2011
Hi all,
I've spent the past 3 days (well, let's say nights, lol!) fine tweaking my 4790k.
Yesterday night, I finally found the right settings for 4.8GHz/1.33v and 4.9GHz/1.395v, stable.
It took me quite a while playing with Agent Voltage, Cache, VRing and such (thanks Woomack for the advice).
Fans at full speed. Temps hitting respectively 73°[email protected] and 77°[email protected] with Aida64, and mid/high 60'[email protected] and low 70'[email protected] with XTU and CineBench R15. I ran a lot of these benchmarks in loop (maybe 30 of each, as I am not confident in Aida64 for stability testing...). Ambient around 19/20°C both nights.
I ran OCCT as well for [email protected] and [email protected], just to make sure...
So, rock solid it seemed... Until this afternoon.
It needed 0.02v extra to be stable at these frequency. I thouhgt I might have degraded the CPU as I tortured him up to 1.6v on air.
The only two factors that changed were ambient temp: from 19/20°C at night to 25/26°C day time, and the fans set to a custom profile, passive up to 50°C and then ramping up to 100%@80°C.
Before going deep into depression, prozac, booze and such for having degraded my lovely chip, I decided to try again those settings at night, with fan full speed, and custom profile.
And that's where I noticed the so-called patern: from 4.8GHz and up, when stressed, the CPU was crashing when reaching the high 70's in both Cinebench and XTU and needed an extra 0.02v at both freq to pass the benchmarks.
As soon as I turned the fans speed to 100%, and the temps remained in the high 60's, low 70's, pfff, problem gone.
Now able to run in loops CB R11.5@5GHz/1.46v at night, with temps@77/78°C, but XTU and CB R15 won't pass as they need 0.02 extra vCore, and then temps hit the low 80's and crash.
It make s me think a bit of the Phenom II's that were losing stability from 4GHz and up when reaching the mid 50's while the could run@60°C+ up to 3.9GHz, with no problem.
I've spent the past 3 days (well, let's say nights, lol!) fine tweaking my 4790k.
Yesterday night, I finally found the right settings for 4.8GHz/1.33v and 4.9GHz/1.395v, stable.
It took me quite a while playing with Agent Voltage, Cache, VRing and such (thanks Woomack for the advice).
Fans at full speed. Temps hitting respectively 73°[email protected] and 77°[email protected] with Aida64, and mid/high 60'[email protected] and low 70'[email protected] with XTU and CineBench R15. I ran a lot of these benchmarks in loop (maybe 30 of each, as I am not confident in Aida64 for stability testing...). Ambient around 19/20°C both nights.
I ran OCCT as well for [email protected] and [email protected], just to make sure...
So, rock solid it seemed... Until this afternoon.
It needed 0.02v extra to be stable at these frequency. I thouhgt I might have degraded the CPU as I tortured him up to 1.6v on air.
The only two factors that changed were ambient temp: from 19/20°C at night to 25/26°C day time, and the fans set to a custom profile, passive up to 50°C and then ramping up to 100%@80°C.
Before going deep into depression, prozac, booze and such for having degraded my lovely chip, I decided to try again those settings at night, with fan full speed, and custom profile.
And that's where I noticed the so-called patern: from 4.8GHz and up, when stressed, the CPU was crashing when reaching the high 70's in both Cinebench and XTU and needed an extra 0.02v at both freq to pass the benchmarks.
As soon as I turned the fans speed to 100%, and the temps remained in the high 60's, low 70's, pfff, problem gone.
Now able to run in loops CB R11.5@5GHz/1.46v at night, with temps@77/78°C, but XTU and CB R15 won't pass as they need 0.02 extra vCore, and then temps hit the low 80's and crash.
It make s me think a bit of the Phenom II's that were losing stability from 4GHz and up when reaching the mid 50's while the could run@60°C+ up to 3.9GHz, with no problem.
