F5F Stay Refreshed Power Users Overclocking 5930k + MSI X99A SLI Plus experiencing overclocking problems.

5930k + MSI X99A SLI Plus experiencing overclocking problems.

5930k + MSI X99A SLI Plus experiencing overclocking problems.

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emillia135
Junior Member
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14
09-21-2016, 01:20 PM
#1
Hey everyone
I've been using this configuration for a while now and stayed stable at 4.2GHz for about a year. Last week, after installing a manual Vcore of 1.3v and adjusting the core ratio to 44 per core, the machine had a major problem—no display, no clear CMOS, clearing the CMOS didn't help, changing the motherboard BIOS also failed. I stripped everything down, removed the CMOS battery, and powered it up with just one RAM stick and one GPU. I cleaned it up, added three RAM sticks (4x4GB DDR4 2133), but every time I added the fourth stick it wouldn't boot again, even after mixing them up.

I then went back to using just one RAM stick and installed the second GPU (SLI 970's). The issue persisted—swapping the secondary GPU for the primary didn’t fix it, nor did switching the primary for the secondary. Using the secondary in another system worked fine.

I sent it to Scan in the UK, where they tested CPU, motherboard, and RAM and found everything normal. They returned it, and I rebuilt it, which started working immediately. However, after about a week of use, the machine remained stable but showed some odd behavior: one of the temperature sensors on the motherboard kept reading 127°C constantly (via HWMonitor), and my core frequencies seemed erratic—idle at 1200MHz but randomly jumping to 4GHz between cores. EIST was enabled, turbo was active, power plan was balanced, and the core ratio was set to 40x100.

It would idle at 1200MHz, yet under light load it would randomly switch to 4GHz across cores. Even opening Chrome sent all cores to 4GHz. XMP was not enabled, but C states were active.

Anyone have an idea why the frequency isn’t changing in 200mhz steps? It’s strange—even switching things around didn’t help.
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E
emillia135
09-21-2016, 01:20 PM #1

Hey everyone
I've been using this configuration for a while now and stayed stable at 4.2GHz for about a year. Last week, after installing a manual Vcore of 1.3v and adjusting the core ratio to 44 per core, the machine had a major problem—no display, no clear CMOS, clearing the CMOS didn't help, changing the motherboard BIOS also failed. I stripped everything down, removed the CMOS battery, and powered it up with just one RAM stick and one GPU. I cleaned it up, added three RAM sticks (4x4GB DDR4 2133), but every time I added the fourth stick it wouldn't boot again, even after mixing them up.

I then went back to using just one RAM stick and installed the second GPU (SLI 970's). The issue persisted—swapping the secondary GPU for the primary didn’t fix it, nor did switching the primary for the secondary. Using the secondary in another system worked fine.

I sent it to Scan in the UK, where they tested CPU, motherboard, and RAM and found everything normal. They returned it, and I rebuilt it, which started working immediately. However, after about a week of use, the machine remained stable but showed some odd behavior: one of the temperature sensors on the motherboard kept reading 127°C constantly (via HWMonitor), and my core frequencies seemed erratic—idle at 1200MHz but randomly jumping to 4GHz between cores. EIST was enabled, turbo was active, power plan was balanced, and the core ratio was set to 40x100.

It would idle at 1200MHz, yet under light load it would randomly switch to 4GHz across cores. Even opening Chrome sent all cores to 4GHz. XMP was not enabled, but C states were active.

Anyone have an idea why the frequency isn’t changing in 200mhz steps? It’s strange—even switching things around didn’t help.

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T
tomtiger99
Member
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111
10-11-2016, 07:18 PM
#2
It seems your system's core frequencies are fluctuating despite low CPU usage. Are there any BIOS adjustments that could allow it to switch to a wider range of frequencies, similar to its previous behavior?
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T
tomtiger99
10-11-2016, 07:18 PM #2

It seems your system's core frequencies are fluctuating despite low CPU usage. Are there any BIOS adjustments that could allow it to switch to a wider range of frequencies, similar to its previous behavior?

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