Motherboard will not post with 4 4gig cards at 2666 i have to back the clock rate back to 2400 and the odd thing is my motherboard shows these cards at 2133 for the default value. The XMP profile is correct but it wont boot Timing settings are 16-17-17-17-36-50-6.
I can boot each card at 2666 alone or in pairs but adding 3 or 4 cards it wont work. With 4 cards watching movies via amazon prime the audio and video fall out of sink at 2400 but drop it down to 2 cards @2666 its fine.
Im thinking my motherboard may need a bios update for this ram (and not more updates available) though it does post 2 cards 2666 and 4 cards 2400. Voltage has been stable and no glitches at 1.3 volts though these are suppose to be 1.2 volts
| RAM | 32 GB ddr4_sdram |
|---|---|
| Memory Speed | 4000 MHz |









