I5 8600k Voltage Drops
I5 8600k Voltage Drops
Hi everyone.
I've just switched to an I5-8600k from a previous I7-4790k that I had overclocked. Initially, I intended to push the CPU to 4.8ghz, but I'm facing stability and performance issues since the voltage fluctuates (1.3 in BIOS vs 1.21 under load). All CPU states are disabled in BIOS, and I've enabled power-saving features as well as high-performance settings on Windows.
Cinebench R15 scores between 920-940, which seems low compared to others. Any suggestions or advice would be greatly appreciated. My current setup includes:
CPU: I5-8600k
CPU-Cooler: Corsair H100i GTX
GPU: Nvidia 1060 6GB
RAM: Corsair Vengeance 16GB 3000MHz
MB: Gigabyte Z370 P3
PSU: Corsair 650i
samuelbowater :
my motherboard only has two LLC settings: Turbo and High.
i think my motherboard is the issue because i chose the cheapest one available.
you're probably right. Two parts i tell people never to cut costs on are the power supply and the motherboard.
they are the key drivers for your system.
for a power supply, i recommend always high quality (tier 1 or 2), but for a motherboard you should at least have a decent one to ensure reliability.
avoid buying cheap cases, dvd writers, ram, etc... there are places where you can save money, but not too much.
sorry we couldn't help further... maybe someone else will, but for now i need more time and might lose money. i'll check...
Check if the vdroop/load line calibration options are active; if not, proceed with that adjustment.
Why are you fighting for more voltage all the time. A constant high voltage is a waste of heat and power when not under load.
Have you looked at the settings in Intel Extreme Tuning Utility?
Also with v-droop settings one does not get the set fixed voltage during use.
I reinstalled windows 10, but it isn't activated (which is why I can't see that as the issue).
I did load line calibration on Turbo.
I haven't checked Intel Extreme Tuning Utility yet—what features should I be checking there?
Hi, I'm trying to assist you since I have an i5 8600k with 4.8ghz and 1.26 core volt.
Your Cinebench scores seem odd—around 1160-1180.
I recommend adjusting the voltage to 1.26-1.28 and using Loadline calibration mode 4 or 3. I'm not sure how turbo affects LLC, but testing with Prime v26.6 and AIDA64 or Intel Burner (optional due to AVX support) might help.
Hi, I'm trying to assist you since I'm using an i5 8600k with 4.8ghz and 1.26 core volt.
Your Cinebench scores seem odd—around 1160-1180.
I recommend adjusting the voltage to between 1.26 and 1.28, and setting the Loadline calibration to mode 4 or 3. I'm not sure what turbo does on LLC.
Give it a try and perform a stability test using Prime V26.6 and AIDA64 or Intel Burner (optional because it uses AVX).
That's exactly what I suggested earlier for someone with an i9 9900K, lowering the voltage to under 1.3 while keeping LLC at 6 for a 5GHz OC with 77°C max temps.
With LLC increased to 7, they could drop the Vcore all the way to 1.275V and still stay stable—though it means more heat.
So, increasing the LLC settings might help.
samuelbowater :
my motherboard only has two LLC settings: turbo and high.
i think my motherboard is the issue because i chose the cheapest one available.
you're probably right. Two parts i tell people never to cut costs on are the psu and the motherboard.
they are the key drivers for your system.
for a psu, i recommend the highest quality always (tier 1 or 2), but for a motherboard you should at least have a mid-range one for a better match.
if you buy a cheap case, dvd writer, ram, etc., there are places to save money—but not too much.
sorry we can't help further right now... maybe luck will be on your side or someone else will suggest something, but for me i need more time and probably won't be satisfied.
i'll check back later.