HWInfo64 says my SSD drive remaining life is 100%. I've had the PC for 3 weeks.
Western Digital's utilities don't give a number, just a bar graph.
Does 100% seem reasonable? HWInfo also does report the SSD's total writes and reads.
Yes, that seems reasonable. Go to the manufacturer's webpage for your drive and look up the endurance spec or TBW (Terabytes Written). SSD models that are 2-3 years old (not in use for 2-3 years) have about a 200X drive size endurance, so a 1TB drive is warrantied for 200TB total written over the drive life. Newer consumer models, WD Blue, Samsung EVO, etc. have a 300-400X drive size endurance, or 300-400TB total written over a 1TB drive life. The newer PRO version drives, more expensive, have a 600+X drive size endurance, or 600+TB total written over a 1TB drive life. 500-512 GB drive total written numbers will be halved from those above, but still use the same multiplier. These values will vary depending on the drive model and for WD SSDs the endurance increases from green > blue > black models, along with the price.