Illegal Summary Output
Illegal Summary Output
I've been attempting to boost my 8350 to 4.8Ghz. I'll create an OC profile for more demanding games and video rendering, but I'll run it at stock settings initially for daily use. The challenge is that I've reached a limit and can't proceed further. I'm using only the multiplier method to increase its speed.
Currently, I'm at 24x Multiplier and 1.49v. On Prime95 during Blend testing, I encountered rounding issues. After some research, I adjusted the voltages on my NB and HT Link, raising them to 2400Mhz. This resolved the rounding errors and allowed me to run Prime95 for about 30 minutes (sometimes less) before encountering Illegal Summout errors in some Workers.
What's unusual is that the issue isn't related to insufficient vCore. No matter the voltage—1.48v, 1.49v, 1.5v—the vCore (with Ultra-High LLC) never exceeds 1.512v on the HWMonitor. Yet, stability remains elusive. During Prime95, my maximum temperature is 68ºC (well below the 72ºC warning), and with the H100i at max settings, I don't see any heat increase even when stressing it between 1.48v and 1.5v.
Cool'n'Quiet: Always Disabled
C1E: Disabled
SVM: Disabled
Core C6 State: Disabled
HPC Mode: Disabled
Apm Master Mode: Disabled
CPU LLC: Ultra High
(Extreme setting activates near 1.5v, but the PC freezes)
CPU Current Capability: 130%
CPU Power Phase Control: Extreme
CPU/NB Current Capability: 130%
DRAM Current Capability: 130%
AMD Turbo CORE technology: Disabled
CPU Spread Spectrum: Disabled
EPU Power Saving Mode: Disabled
RAM: G.Skill Ares 2x4Gb 2133Mhz CL9 (XMP Profile applied, no overclocking)
CPU Manual Voltage: 1.49v
CPU/NB Manual Voltage: 1.30v
DRAM Voltage: 1.65v (as advertised, no changes made)
NB Voltage: 1.20v
NB/HT Voltage: 1.22v
NB Frequency: 2400Mhz
HT Link Frequency: 2400Mhz
CPU temperatures during overclock:
Remain between 25-30ºC when idle.
Peak reaches 58-68ºC under load.
The motherboard is a Crosshair V Formula-Z. The PSU is a NZXT Hale90 1000w Gold. All rails are functioning normally with minimal fluctuations. My H100i is stock, and fans operate at full speed.
Any clue as to what might be causing this instability?
He replied with a smile, acknowledging the chance fortune of the chip lottery.
Additionally, you might be exceeding the suggested maximum temperatures for your CPU.
Could it be? I've managed to get it stable (24hrs Prime95 on Blend) at 4.7Ghz, and by increasing the vCore only about 0.02v, it managed to run at 4.8Ghz for 30 minutes before Worker #7 gave up. There isn't anything else I can do to achieve a bit more stability? Maybe push the NB and HT Link a bit further... I don't know. Maybe the VRM's are overheating causing the instability..