x99 sabertooth build featuring odd O/C failure and no boot
x99 sabertooth build featuring odd O/C failure and no boot
Hello everyone,
I’m experiencing some unusual problems with my X99 build. I usually run a light overclock at around 4ghz, raise the CPU voltage to 1.25v, and apply the XMP profile for my memory. Most of the time it works perfectly and would function all day if left running.
Occasionally, during long periods without use, I encounter an overclock failure on startup. This happens only after extended periods of inactivity. When I enter BIOS, reload the current overclock settings, and restart, the same error message appears again. If I switch to the default profile and boot, it sometimes works, but often I don’t see anything after the Windows icon loads and I run into POST/boot issues.
I usually remove the case, experiment with removing or swapping components like the DIMM modules or graphics cards, and sometimes it resolves itself.
The build itself is decent, but it’s been updated only a couple of times in a few years. I’m concerned about a possible capacitor issue on the power supply or board. The Sabertooth models are reputable, so I’m leaning toward checking the PSU.
Here’s what I have:
- Asus TUF X99 Sabertooth Intel X99 (Socket 2011) DDR4 ATX Board
- Corsair Vengeance 16GB (4x4GB) DDR4 PC4-19200C14 2400MHz Quad Channel Kit - Black
- Intel i7-5820K 3.30GHz (Haswell-E) Socket LGA2011-V3 Processor - Retail
- Fractal Design Define S Midi Tower Case - Black Window
- Noctua NH-D15S Dual Radiator Quiet CPU Cooler
- Super Flower Leadex Platinum 750W Fully Modular "80 Plus Platinum" Power Supply - Black
- Noctua NF-A14 PWM Fan - 140mm
- MSI GTX970
- 120gb / 500gb Samsung Evo SSDs
I’m not sure where to start troubleshooting, but thanks ahead.
It seems stability might be an issue. At 4ghz, the 5820K doesn't require 1.25v but could work around 1.15v or even the standard voltage, though 1.25v won't cause problems if temperatures are manageable. My system reaches 4.5ghz at about 1.27v. I recommend increasing the RAM voltage slightly—try 1.3v and observe if it resolves your concerns. Some users on forums have reported boot issues with higher voltages, so consider lowering it back to auto or the required level. You might also attempt a higher input voltage of 1.95v and see if that helps. If problems persist, revert to the previous setting.
It seems the system might be experiencing some instability. At 4ghz, the 5820K doesn’t require 1.25v but could work around 1.15v or even the standard voltage, though 1.25v won’t cause any harm if temperatures are acceptable. My setup reaches 4.5ghz at about 1.27v. I’d begin by increasing the RAM voltage slightly—perhaps to 1.3v—to see if that resolves the issues. For some users, a 1.36v setting was necessary on their machine to allow multiple RAM sticks to be read continuously. There’s a forum discussion about Asus boards and RAM voltage affecting boot problems similar to yours. If this doesn’t help, revert the RAM voltage back to its default or current setting. You might also consider adjusting the input voltage to 1.95v and testing again; if problems persist, try lowering it back to auto or whatever level you used previously. System Agent voltage is another option—try 1.0v, but if that doesn’t work, go with 1.1v and then return to your default setting. If none of these steps help, feel free to share more details so we can assist further. Good luck!