CrystalDiskInfo can read the SMART health information exposed by many SSDs, including host writes, temperature, power-on hours and critical warnings. Compare the write total with the exact drive's endurance rating, but do not turn the remaining percentage into a guaranteed lifespan.

Quick Answer

Download CrystalDiskInfo from its official project source, select the correct SSD and record the model, firmware, Total Host Writes, Percentage Used or remaining-life attribute, temperature and warnings. Then find the exact model's TBW and warranty terms. Back up first if the drive reports a critical warning or media error.

Use Evetech's solid-state drive range and SSD best-seller page to compare a replacement. Capacity, interface, NAND, endurance and warranty all belong in that choice.

Identify the Exact Drive

Record the full model string and capacity. A product family can use different TBW ratings at 500GB, 1TB and 2TB. OEM variants may not share every specification with a retail model carrying a similar name.

Check whether the drive is NVMe or SATA and note its firmware revision. CrystalDiskInfo relies on the attributes the controller exposes. Some USB enclosures do not pass every SMART command, so a portable or externally connected drive may show fewer fields.

Do not install a firmware update before the data is backed up and the vendor instructions have been read. A failing drive is a poor place for an unnecessary write or power-risk event.

Understand Host Writes

Total Host Writes counts data sent by the host, reported in units that the software converts where the drive supplies the information. NAND writes inside the controller can differ because garbage collection, compression, over-provisioning and write amplification change the internal workload.

TBW is the manufacturer's terabytes-written endurance figure for a specified model and warranty context. Reaching it does not make the drive stop at the next byte. Staying below it does not guarantee the SSD cannot fail for another reason.

Read the written warranty. Some terms end at a time limit or endurance limit, whichever occurs first, and attributes used to assess endurance can vary. Do not calculate an exact amount of warranty remaining from one writes number.

Read the Health Attributes Together

NVMe SMART includes Critical Warning, Available Spare, Percentage Used, Data Units Written and media or data integrity errors where supported. SATA drives use vendor-specific attribute names and raw values. CrystalDiskInfo interprets common ones, but the SSD maker's own utility can add model-specific detail.

Percentage Used is a controller estimate of consumed endurance, not a countdown clock. A value can move in steps and does not predict the date of failure. Available Spare tracks reserve blocks against a threshold.

Temperature deserves context. Read the current and peak values during the actual workload. A warm drive with no throttle or warnings may be fine, while repeated thermal throttling can explain inconsistent transfer speed.

Establish a Write Rate

Save a screenshot today and repeat in a month under normal use. Subtract the host-write totals to estimate your monthly workload. A creator moving large video caches will consume endurance faster than a game library that is read often and patched from time to time.

Avoid writing a huge benchmark merely to test endurance. Use a short, bounded speed check when performance is in question. The SMART counter itself gives a better history than filling the drive with disposable data.

Keep free space for the controller and Windows. A nearly full SSD can lose sustained write speed and makes data management harder, though free capacity is separate from its rated TBW.

Respond to Warning Signs

Back up at once if Critical Warning is non-zero, media errors rise, the drive becomes read-only, disconnects or vanishes from firmware. Do not wait for the health label to fall from Good. A SMART pass cannot rule out sudden controller or power failure.

Check the physical path too. A SATA cable, M.2 seating problem, overheating controller or unstable PCIe link can produce errors around a healthy NAND array. Preserve logs before reseating anything.

For support, keep the proof of purchase, model, serial, screenshots and reproduction steps. Remove private data through a supported secure process only when the drive remains stable enough and the support route requires it.

Plan Replacement Before the Crisis

Use the measured write rate and warranty term to choose a review date. A workstation drive close to its endurance rating deserves a planned migration even if it still performs well. A lightly written game drive may have years of useful service without needing a speculative swap.

Clone or restore from a verified backup to the new SSD, then confirm the files before repurposing the old drive. Cloning a failing source can stress it, so prioritise irreplaceable data and use suitable recovery help when errors are active.

FAQ

Does reaching the TBW number kill an SSD?

No. TBW is an endurance and warranty figure, not a programmed shutdown point.

Is CrystalDiskInfo's Good label a backup?

No. SMART can reveal trends and warnings, but sudden failures still occur. Keep separate verified copies.

Can I compare host writes across different SSD tools?

Yes when they interpret the same raw counter correctly, but confirm units and model-specific attributes before relying on a difference.

Record the SSD's exact model, host writes and critical attributes, compare them with the written endurance terms and back up before any warning becomes a failure.