Intel i9-9900KF, BSODs, voltage and fans working overtime
As the title suggests I've been having a tough time getting stability with my latest rig.
The full set up:
- ASUS Maximus XI Code
- Intel i9-9900KF
- Cryorig CR-C1 C1 Cooler
- 64GB RAM (2xG.Skill F4-3733C17D-32GTZR)
- Samsung 970 EVO Plus 1 TB NVMe M.2 Internal SSD
- ASUS ROG-STRIX-RTX2080TI-O11G-GAMING GeForce RTX 2080 Ti 11 GB GDDR6
- Cooler Master V-series 850W Gold Modular PSU
- Antec DF500 RGB Mid Tower ATX Case
- 2x Corsair CO-9050068-WW HD140 fans, mounted at the top of the case
Running Windows 10 under the stock settings (i.e. no overclock, just OOB) I was getting frequent BSODs including:
After several days of investigation I discovered the problem was caused by insufficient voltage to the CPU. The automatic voltage selected by the motherboard was nowhere near enough to run the 9900KF at 3.60GHz (I recall it was ~0.7v).
Since manually setting the voltage to 1.12v I've been stable, and a stable clocking to 5GHz seems to require around requires 1.35v. However, 1.35v is generating a lot more heat, but surely my air cooling (on low fan RPM) is more than sufficient, but the fan speeds crank up to maximum across the CPU fan and chassis fans which makes this quiet rig sound like a jet engine in reverse thrust.
I appreciate the temperatures of the 9900KF are high; but the idle package temperature of ~45c and a stress test making it reach 90c+ smacks of something not being quite right.
I surely cannot be alone in the undervolting situation, and equally cannot be alone in the battle to keep a similar system cool?