Issue with Vdroop leading to BSOD during 3570K overclocking!
Issue with Vdroop leading to BSOD during 3570K overclocking!
While attempting to boost my 3570K’s performance, I noticed the CPU needs a minimum of 1.248V for stability at 4.6. Under Prime 95 testing it drops to 1.240 or 1.224 and then crashes. What adjustments should I make to reach the required voltage? I’ve tried raising the voltage to 1.265, but even then it overshoots to 1.288V during idle while still falling short under load and triggering a BSOD. The High and Ultra High settings on LLC still drop. Here’s my spec list:
CPU: i5 3570K
COOLER: EVGA CLC 280 AIO
MOBO: Asus Z68V-PRO GEN3 REV 1.03
RAM: 2*4GB CORSAIR VENGEANCE 1600Mhz
SSD/HDD: 250GB SAMSUNG 850 EVO(Boot)/3TB Seagate Barracuda(1+2TB)
GPU: EVGA GTX 1070Ti ULTRA SILENT
PSU: Seasonic S12ii-620W
Chassis: Antec P8
OS: Windows 10 Pro 1903.
As one who had the same cpu and cooler as you...
There's no way it hit 1.88v if you're still able to use it afterwards - it would have died at 1.51! What are you using to measure temps/voltages?
To counter vdroop, you raise the voltage until it becomes stable, or use a higher LLC setting, but higher settings require stronger coolers, so I don't recommend that with the one you currently have.
And please crank the LLC way down, high and u. high is for liquid coolers & LN2. See what you get with the lowest-2nd lowest levels.
You have a budget cooler; there's only so far you're going to be able to get with it. Higher LLC settings will lead to temps that cooler won't be able to handle.
Are you using offset or adaptive voltage? Manual is easier to work with. Find how much voltage you need with manual, and then you can switch back to offset/adaptive(if you're conscious about power consumption), albeit with slightly higher voltage than what you found in manual.
I had a 4.4 clock on mine, but I THINK that was on the auto overclock settings - it's been a few years. Ivy Bridge were real toasty chips at the time when they came out - are poor overclockers, compared to Sandy Bridge, because of the heat.
Sorry the voltage wasn't exactly 1.88V it was 1.288V, and the CPU cooler is an EVGA 280 CLC (Updated now). I'm using manual settings, beginning at 1.25 and increasing gradually after 15 minutes of stress testing; it leads to BSOD. Right now I'm testing with 4.5 @ 1.25 if this remains stable, then moving to 4.6 and so on. Currently the LLC is extremely low compared to medium, causing crashes during Windows boot.
This works because the overvoltage generated by the LLC configuration exceeds the required level to maintain stability, which is greater than the 1.248v you mentioned before, though it results in higher temperatures. You can't completely bypass vdroop; it's built into the CPU design, but you can offset it by increasing the voltage. Try leveraging the motherboard’s auto overclock or tuning tools to observe the voltage needed to reach a similar 4.6 OC using P-95. Use software like CPU-Z or HWINFO64 while running P-95 to check the voltage consumption. Then gradually reduce the voltage in small steps, such as 0.005, until performance drops and you identify the optimal setting. Keep the LLC setting at medium rather than ultra high when using auto tuning, as leaving it at ultra high can worsen the issue.