5 Reasons Not to Mix RAM Brands
Different timings and voltages Mixing brands means different sticks with potentially different timings, voltages, and chip quality. This can cause instability.
Random crashes and blue screens Mismatched RAM often leads to random crashes, blue screens, or performance hiccups that are hard to diagnose. The savings are rarely worth the headache.
Slower default speeds Motherboards and CPUs will default to the slowest common speed and timings. You lose performance from the faster sticks.
Matched kits are tested together A single matched 32GB kit (2x16GB) is tested to work together. It usually costs only a little more and gives you peace of mind.
Better to sell and buy a matched kit If you already have one stick, sell it and buy a single matched kit. Future you will thank present you.