Problem with memory capacity Issue with system performance RAM upgrade concerns
Problem with memory capacity Issue with system performance RAM upgrade concerns
You're dealing with a situation where the kit you have isn't currently available for production. Three years ago, you planned to upgrade later, but now you're faced with choosing between a full 4x16GB package or mixing in parts of your existing unit. I checked Kingston's latest data sheets and noticed only minor changes—mainly the timing configuration shifted from CL18 to CL16—but nothing that would affect compatibility. Regarding mixing PnP RAM with newer modules, it seems unlikely to cause issues unless there are specific incompatibilities, which aren't apparent here. It should work fine as long as you're using the same type of memory and follow the recommended procedures.
It's rough. One kit is rated 2933mhz CL 17-19-19 1.2v The other is rated 3000mhz CL16 -19-19 1.35v (XMP Profile #2 both ^^) So you will have to over-volt the HX432C18FWK2/32 kit so the HX432C16FB4K2/32 kit can run near it's XMP rated frequency. Generally this is not an issue, the FWK kit is the better of the two imo, but a long shot from just being a fast kit. Set the up first try at 2933mhz CL 17-19-19 1.35v Manually input XMP on auto or default, not enabled. If they post up and test stable, then try the CL at 16 and do some more testing. If it's good, run them that way. However there is also a chance the board won't even post with the mixed memory and may even be unstable at defaults. Any changes you make adding or removing sticks, clear the cmos each time. GL.