My Swiftech MCP655 was bought back in 2008 sometime. I'm not sure how its still working so well, especially since its been running CPU+GPU for ~4 years. It just keeps going and never stops being awesome.
I have a 655 I bought to cool a s478 Pentium 4, which was sometime around 2006-2007. It was about a year before Core2Duo was released. It is now in the FX8320 system. I don't consistently run 24/7 which probably helps explain the longevity.
Hmm, me thinks my 655 is like 9 years old or so. I bought mine used from another member back in '07 or there abouts. Still works like a charm too. Retired it from active duty sometime in '09. Used it as a back up ever since when my other pumps failed. The 655 is still one reliable old friend
Have about 5 years on these two, running dual pumps. And that's after i broke the speed adjustment knob not knowing better when i purchased. I just bought two more for the new ryzen rig, just because i figured refreshing would be good, i have the older ones for backup. I also have run vinegar in my loop at times, and had some issues bumping when filling with dual pumps, so they have been put through some "drier" moments.