This cycle is an indication of the RAM hanging the system. The reboot is the recovery timer kicking in. I would conclude that the memory is incompatible (at least at 2400). You can try dialing it down to run at the defaults for 2133 and see if that works, but the folks I have already provided that advice to have not had much success doing to. Your best bet is to purchase 2133 memory (the faster memory is not going to give you any appreciable increase in performance anyway).
Hope this helps,
I have the same problem as stated above. It probably is the RAM, but theese guys seems to have success with the 2400 MHz version: Intel NUC NUC6i7KYK Skull Canyon Mini PC Review - Legit ReviewsIntel NUC NUC6i7KSYK - Skull Canyon Arrives
"Kingston just recently launched new 32GB (2 x 16GB) HyperX Impact dual-channel DDR4 SO-DIMM memory kits, so we selected the HyperX Impact 32GB 2400MHz DDR4 CL14 SO-DIMM memory kit ($133.99 shipped) to complete the build."
Has someting changed within the NUC? (Other than BIOS)
I'll try to get hold of some new RAM.
First of all, you need to remember that any speed above 2133MHz is considered overclocking. Intel does not recognize, support or warranty overclocking and Intel does not design for nor test overclocking. Translation: if you overclock, don't expect it to work and don't expect Intel to help you when it doesn't.
When you overclock the memory, you are increasing the frequency of the carrier signal used on the memory bus(es). When you increase the frequency, you are increasing (multiplying) the noise occurring on the bus as well. If the noise increases enough (reaches detection thresholds), it will cause data errors. If the data errors are significant (multiple bits), it can reach non-recoverable levels - and you have seen the results of this: POST failures, system hangs, spontaneous reboots, etc. and etc.
The noise on the individual memory buses is generated by all four entities involved, the processor's memory controller, the motherboard circuitry supporting (and surrounding) the bus, the DIMM circuitry supporting the bus and the various RAM ICs on the DIMMs. As a result, since any one (or more!) of these can vary from one individual NUC to another and from one individual DIMM to another, individual results can - and will - definitely vary. While a specific set of 2400MHz DIMMs in a specific NUC might happen to work, this is no guarantee that any other set of 2400MHz DIMMs will work in this or any other NUC - and, in fact, there is no guarantee that, in 6 months time, after the NUC and DIMMs have had time to age a bit, this specific NUC is going to continue to work with these DIMMs.
More memory makes *significantly* more difference to overall performance than does faster memory. Very little - rarely any - performance gains will be garnered by using faster memory. Bottom line, spend your money on bigger DIMMs, not faster DIMMs. Avoid the compatibility issues and stick with 2133MHz DIMMs.
Hope this explains it...
P.S. I personally do not think much of and avoid using Kingston memory. I see way too many people having problems using their memory. I have stuck with Crucial for my own PCs and have *never* had any fail to work or fail in subsequent operation...
I am in agreement with Mr. Scott; 2400MHz is not suitable for NUC6i7KYK and should stick with 2133MHz DIMMs. In my case 3 out of 4 RAMs (HX424S14IBK2/32) of 2400MHz has failed to work with NUC6i7KYK.
The below link will show you the test results performed by Intel on verity of RAMs:
The above list shows Kingston's HX421S13IBK2/32 and KVR21S15D8/16 has successfully passed the test which are of 2133MHz.
Kingston has also confirmed the compatibility with KVR21S15D8/16, see the below link:
So, I would advise to go with KVR21S15D8/16 as both the parties has confirmed the compatibility.
Will share the test result with KVR21S15D8/16 in a weeks’ time.