I am reviving this thread, as I too am confused about Z390 ram requirements.
I am planning a new build based on CaseySJ's Z390 golden build:
CaseySJ's Coffee Lake in Phanteks Evolv X ATX Case: Gigabyte Designare Z390 - i7-9700K - UHD 630 - AMD RX 580 (Please do not quote this build guide in its entirely. Post a link instead.) (See this post for how to refer to a Guide or Mini-Guide.) URGENT: Please avoid Clover 5123 and newer for...
www.tonymacx86.com
I bought a Gigabyte Z390 Designare board and an Intel 9700k processor. - I will be using the machine for video editing.
I am looking to max out the ram modules (4x16GB) and in the golden build guide he used 4x8GB modules. Also the Ram recommendation in the buyers guide are somewhat outdated as many are no longer available.
Based on what I read in this thread, I looked at the manufacturers recommended RAM modules and found very few were the 16GB size and they are hard to find in stock:
My understanding at this point is that this processor/mobo combo max'es out at 64GB of RAM and I would evntually like to get 4x 16GB modules of DDR4 2666MHZ 288 pin, but to get started, I only need 2x16GB modules with my build and can add the last 2 at a later point.
Do the timing and CAS Latenancy numbers have to be the same as the ram listed in the TonyMac Buyer's guide?
The one option I can find from the buyer's guide I can still find is:
https://www.amazon.com/dp/B01AG9EZ6E/?tag=tonymacx86com-20 but since it's only 2400 MHz,
I need to get the 2666 MHz version, correct? I believe that's this one (still CL 16) and is a few dollars less:
https://www.amazon.com/dp/B06XHTGS4G/?tag=tonymacx86com-20
Is there much difference than buying a cheaper ram with the same 2666 MHz specs but CL19, Ex:
https://www.newegg.com/g-skill-32gb-288-pin-ddr4-sdram/p/N82E16820232765
I read on the interwebs that RAM faster than 2666MHz will not yield much benefit on an intel Coffee lake processor, is that correct?
Many thanks, if you read this far
!