2x8GB kit vs adding 2x4GB sticks: Fresh matched kit wins for stability and future upgrades

Replacing your 2x4GB with a 2x8GB kit is safer than adding two more 4GB sticks. Adding mismatched sticks risks random crashes and boot failures, even if they’re the same model. A fresh kit guarantees dual-channel performance and frees up slots for a future 32GB upgrade, usually for under $20 more after selling your old kit.