Can Xeon e5-26xx v4 CPUs be overlooked?

[wnbagh11]

I remember that there was a video from Linus Tech Tips talking about overclocking a v3 series Xeon e5 CPU. Except that there are too few articles about overclocking a Xeon CPU. I wanna double check, can Xeon e5-26xx v4 CPUs be overlooked? If yes, how much can they achieve?

[NumLock21]

Dual socket ones cannot be overclocked. If they can, then it's extremely limited and can only be done through base clock (BCLK). Highest one can probably get is just 105MHz out of default 100MHz. The other thing is, cheaper Xeons, ram starts out at 1866 not the faster 2133 or 2400.

[scottyseng]

It also depends on the motherboard. Some server board manufacturers do not support overclocking at all (like SuperMicro) in seeking reliability over performance. I think some ASUS boards support overclocking, but it is very limited as mentioned above.