Mixing and matching memory...?

[pipnina]

I got my PC with 2x8GB of Ripjawz4 DDR4 in early 2017, and have felt like adding an extra 2x16GB for the sake of running Minecraft modpacks and Space Engineers servers more comfortably, and for blender.

The mobo (Gigabyte z170-hd3) has enough dimm slots, but I have heard of modules not playing nice for one reason or another.

The most compatible 2x16 modules I could find were the Corsair Vengeance LPX, which run at the same 3GHz speed as my Ripjawz and have the same 15-15-15 timings, with the last timing being 36 for my Ripjawz but 35 for the Corsairs. Both sets seem to run at 1.35v standard.

 

Could this cause issues? If it does, are they usually resolvable in the BIOS? This may seem like an overdone question but uncertainties remain. I could get some RipjawzVs which run at exactly the same freq, timing and voltage and are from the same brand, but they are about £30 more expensive where I am.

 

Thanks for the help!

[Jurrunio]

This happens because the memory controller in the CPU isn't capable of running this much memory in such configuration that fast. Trace layout of the board, # of memory ranks and how well the BIOS is programmed to handle the timings can also affect stability.

 

Basically, if it works at 3GHz, run it as so. If it doesn't, keep XMP enabled and reduce frequency until it's stable.