Over the last decade, I’ve upgraded from a budget to a high-end GPU, a 6-core to an 8-core processor, and 16GB RAM to 32GB RAM. The most impactful upgrades, however, didn’t come from any of them. These seemingly routine upgrades were natural progressions in my PC journey, but they ended up delivering a performance jump that I hadn’t quite anticipated. Looking back, some of these upgrades rank among the cheapest things I’ve ever bought for my PC.