i9-9980XE shuts down using Linpack Extreme
I haven't posted in a while but I've been battling with this issue for a couple of days now. I'm trying to overclock a 9980XE CPU but as soon as I change any BIOS setting relating to voltage or clocks the system immediately shuts down when running Linpack Extreme.
System in question:
Intel Core i9-9980XE
ASUS TUF Mark 1 X299 with latest BIOS
4 x 8GB HyperX Predator 3200MHz
Corsair H115i Pro
EVGA G2 1000w
I can get the system stable to run numerous passes of Blender Classroom at 4300MHz with 1.1v, with the core temps maxing out around 75'C - 80'C, VRM temps 95'C max, so I know temps aren't the problem. As soon as I start Linpack Extreme the system shuts down without even trying to run, no BSOD, just shuts down. Seems like some kind of OCP.
So naturally I tried it with lower voltages and clock, same thing. I then realized that leaving all clocks and voltages on auto, but even just enabling "sync all cores", the same happens. Leaving the core ratio setting on it's default of "by core usage", and then using manual voltage of 1.000v - 1.100v (Auto voltage is 1.075v) the same happens. So basically any voltage or clock setting other than "Auto" causes this to happen.
I have some OC experience, but this is my first time OC'ing X299 so I was hoping someone could give me some insight as to why this might be happening. This build is for a customer and I can't have the system shut down every time AVX is used.
P.S. I also noticed that the power limit and duration settings have no effect when running all cores at 4.3GHz 1.1v. I deliberately tried to force the system to start throttling at 200w since this is the limit of what the VRM heatsink can dissipate on this board. Even when reducing the long duration power limit to just 150w I could not see the CPU downclock as I expected it to.
Last edited by QuantumX; 06-25-2019 at 01:13 AM.