8600k Overclock Issues
8600k Overclock Issues
I own an 8600k, h100i Corsair cooler with three front intake fans and one rear exhaust (also h100i). My setup includes an Asus z370 Prime-A motherboard. I'm attempting to push my CPU to 4700mhz.
I have XMP enabled, a 47x multiplier, no AVX offset, and manual voltage at 1.3 volts. During the Prime95 maximum stress test, temperatures hit 100°C and throttling occurs. Based on others' advice, I shouldn't be reaching this heat with just 4.7V and my cooling setup—lowering the voltage or fixing Prime95 issues should help. Intel Extreme Tuning reaches a max of 87°C under stress, but I feel it's still too high. My goal is stable 4700mhz, minimal voltage, and consistent cooling. Anyone have suggestions?
It seems the required version is either v26.6 or newer. If you're using a newer release with AVX, running at 1.3V and all cores at 4.7 with 100°C, it's not impossible to achieve 90°C. Just to clarify, I'm using an air-cooled high-end cooler (8700k) with all cores at 4.7 at 1.26V, which would result in temperatures in the 90s with Prime95 AVX. Coffee Lakes tend to overheat with AVX, and success depends on the chipset or luck. Therefore, setting an AVX offset of 200 or 300 MHz might be helpful.
It appears the system is running at a higher than expected level, though still within reasonable limits. Which Prime95 version are you employing? v26.6 or an updated release? If you're using a newer version with AVX support at 1.3V and all cores at 4.7V, achieving 100°C should be feasible. Deep in the 90s is achievable. Coffee Lakes tend to overheat under AVX conditions, especially on lower-end CPUs. The performance will vary based on chipset compatibility or luck. You might want to adjust the AVX offset to 200 or 300 MHz.
I'm currently using version 29.4. Running it at 1.215V lowers temperatures but introduces rounding errors in two cores. This suggests a higher voltage might be needed, as seen with Intel Extreme tuning reaching around 80°C instead of 89°C at full voltage. I plan to implement a 2 AVX offset and test again.
Please note the BIOS details here:
https://imgur.com/a/pzuqGN2
I apologize if the images were misinterpreted; I wasn't sure about alternative methods.
Also, a 40x cache ratio seems excessive for a 47x core configuration—thank you for the feedback.
Ronegrad is discussing the performance of Prime95 with varying versions and configurations. He mentions using a high-end air cooler and different core voltages, noting that running at 1.3V with AVX support can still achieve stable temperatures around the 90s. He shares his experience with Coffee Lakes under similar conditions and suggests adjusting the AVX offset for better stability. He also references his BIOS settings and notes the importance of balancing voltage and multiplier to avoid overheating or instability.
The situation appears a bit elevated, though not out of the ordinary. Which Prime95 version are you employing? v26.6 or an updated release? If you're utilizing a newer iteration (incorporating AVX), operating at 1.3V with all cores at 4.7V should be feasible. At 100C it's still achievable.
Just for context, I'm running an air-cooled 8700k with a high-end cooler and all cores at 4.7V. At 1.26V, temperatures in the low 90s are realistic with Prime95 AVX. Coffee Lakes tend to overheat under AVX, especially on those specific configurations.
Consider adjusting the AVX offset to 200 or 300 MHz. I'm using version 29.4; running at 1.215V lowers temps but introduces rounding errors in two cores. This suggests a higher voltage might be needed to stabilize performance, potentially around 80°C instead of 89°C at 1.3V. Intel Extreme tuning seems to handle it better at lower temperatures.
Here are my BIOS details:
https://imgur.com/a/pzuqGN2
Apologies for the phone capture; I'm unsure about alternative methods.
A 40x cache ratio might be too high or too low given a 47x core count. Thanks for the advice.