4 years after purchase is when I'm writing this review, and it's still running strong for my home media server. It's been on 24/7 for almost all of that time, just chugging away - no fan noise, super low power usage, no issues at all. Dare I say the most stable and low maintenance computer I've ever had? Added a couple external HDDs and blow it out with canned air every couple/6 months.. here's to 4 more years!