3770k experiences unexpected rapid clock speed increases leading to instability
3770k experiences unexpected rapid clock speed increases leading to instability
I've dealt with an overclock problem for more than four years, maintaining solid stability. I've spent thousands of hours running CPU-heavy games such as BF4/BF1, The Division, and Fallout 4. Recently, a new bundle arrived, which meant my PC was idle for nearly five months. I rebooted it a few times to apply updates—games, drivers, Windows—but never played more than ten minutes at a time.
Yesterday, I finally had some free time and decided to play Battlefield 1. The game kept crashing unexpectedly. I verified all drivers were up to date and began monitoring temperatures using HWmonitor, as I initially suspected the temps were rising too high. The CPU temperature remained stable, ranging between 62°C and 68°C across all four cores. I also cleaned the dust from the system.
Then I noticed something unusual: the HW monitor displayed my maximum CPU speed as 4731mhz! I opened CPU-Z and MSI Afterburner to confirm. They showed brief spikes lasting about one to two seconds in clock speed. Since I had a dual-monitor setup, I left them running on one screen while launching BF1. The random frequency jumps were definitely causing the game to crash.
An increase in CPU voltage from 1.26V to 1.28V seems to have brought stability back, but I’m still puzzled by this sudden issue. I attempted to set the maximum CPU limit in Windows Power Options to 4600mhz, but it continued. I double-checked all my overclock parameters—everything seemed correct. What could be triggering these sudden spikes in clock speed? Is my motherboard finally failing?
I’m not using adaptive voltage control. I’m sticking with fixed voltage and a fixed clock speed.
Here are my system specifications:
- Intel i7 3770K @ 4.6GHz, 1.26V, air cooled with Noctua NH-D14
- MSI Z77A-GD55
- 16GB 2400MHz G-Skill Trident Z
- EVGA GTX 970 SSC
- 240GB Intel 730 SSD
- 1TB WD Black
- 3TB WD Green
disable all turbo boost configurations in BIOS? The i7 3770k supports up to 400 MHz turbo, possibly attempting to increase from the 4.6 setting.
Disable all turbo boost configurations in BIOS? My i7 3770k supports up to 400 MHz of turbo, possibly attempting to increase from the 4.6 setting. Yes, turbo and EIST are disabled. This is unusual; I've never seen such behavior before. I frequently use a HW monitor during games and haven't noticed these spikes.
Boonus18 :
tsnor :
disable all turbo boost settings in BIOS ? my i7 3770k supports up to 400 mhz of turbo, possibly it's attempting to increase from the 4.6 setting.
Yes, turbo and EIST are off. It's unusual. From what I understand, this hasn't happened before recently. I frequently use a HW monitor during games and have never noticed these spikes before.
Could there be an issue with how the CMOS values are stored? There seems to be limited error correction, and since my computer was off for nearly five months, it suggests the CMOS battery had to maintain those values rather than relying on wall power.
Try resetting the CMOS to defaults, save, boot, shut down, and then reintroduce your overclock?