Why is Broadwell x99 Asus ROG MB overclocked now with BSODs?
Why is Broadwell x99 Asus ROG MB overclocked now with BSODs?
The situation described involved an overclocked PC that initially operated without issues, but later experienced BSODs. These crashes typically occurred when the system was not overclocked and after applying additional voltage to the CPU and DRAM. The user attempted various fixes, including driver updates, Memtest86 scans, adjusting voltages, and using UEFI overclocking, yet encountered persistent errors. Eventually, they resolved the problem by increasing the DRAM voltage and further adjusting CPU settings, restoring functionality.
What is your VCCSA voltage set to? It's the voltage for the IMC inside the CPU, working with DRAM voltage. I built an ASUS X99 Deluxe w/5820k, OC'd to 4.4Ghz, and now it's back to stock for a family member. This voltage is quite sensitive to the X99 model, with a narrow acceptable range for stability. Too low or too high can cause problems. I'm also curious about the CPU input voltage and cache voltage.
Thank you for your patience. I'm currently occupied with something important for my child, but I'll update you soon. I believe the system is set to default, but I'll verify and try to respond within the next hour.
I'm taking some time to improve myself. I had an offset of +0.143v for agent voltage. I think the stock is around .868v or something similar. XMP changes this, but it relies on averages. My specific CPU didn't accept the XMP default voltage, so after a lot of research, I found out where to begin adjusting. This was actually how I ended up joining these forums. My CPU used a manual voltage of 1.325 with 44X multi-core and 40x cache, while the cache was at 1.25v. The CPU could handle up to 140% DRAM current at 130%, and DRAM at 2666 with adjusted timings at 1.35v. I've been running this setup for about three years. A 1.3v setting on the CPU was thought to be safe, but I pushed it a bit higher to 1.325v myself. Today it still runs well as a daily driver.
Hello once more. It seems degradation might be present, though it's hard to say for sure. Given your SA voltage is at .872, I would increase it slightly for XMP and rerun the latest bootable Memtest86. I tested mine at around 1.06v after the offset. This voltage is directly connected to the memory controller. Keep DRAM at 1.35v. A CPU voltage of 1.3v works well. I also increased the input voltage to about 1.9v. I maintained PCH voltage at AUTO 1.5v, as I found that helpful before. From what I recall, similar problems with SA voltage occurred a couple of times—months or even years apart—and required adjustments for stability. But my issues weren't BSODs; I experienced difficulties during cold starts and occasionally during warm starts. Still, considering your Memtest86 problems with four sticks and voltage tweaks, I think the BSODs point to memory or controller issues.
Ok; so here's the latest. Got some memory errors.
I made the voltage changes above.
Ran memtest. Got an error on test 4 in the first pass. Took out two sticks. Ran it again for 1 pass and no errors. Put in the other two sticks. Ran test with all. Got an error this time on test 5 during first pass. Took out two different sticks (making sure to put the remaining two in the right slots). No errors on 1 pass.
So it could be memory controller or maybe a problem with third and 4th slots?
LOL. After putting the 4 sticks back in in various places, it has successfully passed test 1/4.
It's unusual. Memory slots can definitely have problems. I recently had a PC fail with two failed slots on an MSI Z97 board after testing. Any adjustments to the PC or cooler placement? Uneven pressure on these CPUs often leads to unstable RAM slot behavior. Have you considered using XMP at 2133 only with four sticks?
There aren't any big changes. It might be that the slots are very responsive. I didn't enable xmp because I don't want my son to lose my head if a crash occurs.