$ sudo smartctl -A /dev/nvme0n1 Available Spare: 100% Available Spare Threshold: 10% Percentage Used: 0%

$ sudo smartctl -A /dev/nvme0n1 Available Spare: 100% Available Spare Threshold: 10% Percentage Used: 0% Data Units Read: 626,936 [320 GB] Data Units Written: 22,262,139 [11.3 TB] This is on a few months old PC which is why percentage used is still 0%. The number does slowly go up over time especially if you do heavy writing. As with LED lightbulbs, the consumer industry is focused on costcutting to deliver shitty products at low prices. Any high quality SSD is more than adequate for consumer use. Main thing to look at is how many layers the flash has. SLC is pretty much not available in consumer products. Triple layer is very adequate. All the cheap products have four layer, which you don't want unless you know you're not going to be writing often. Firmware bugs or bad controllers are still a potential issue. I have a 1.5 year old drive which is at something like 65% percentage used, it's a big drive with a high TBW rating and only a moderate amount of data written to it, but the excessive wear is known issue with that model. It'll get replaced under warranty but that's only kicking the can down the road since the replacement will have the same issue.