- The Underlying Cause: These drives feature a dynamic SLC cache layout that shrinks as the drive fills up.
- Failure Vector: Once storage utilization passes 85%, the high-speed cache space disappears completely. Read/write performance drops down to roughly 50-100 MB/s—slower than many mechanical laptop hard drives. The system begins to lag heavily during simple daily workflows like opening web browsers or transferring photos.
- The Underlying Cause: These cost-optimized OEM controllers use budget internal components to hit entry-level price brackets.
- Failure Vector: These controllers suffer from early component failure under elevated ambient temperatures. The drive will suddenly develop a high concentration of bad sectors within its first 12–24 months of operation, resulting in frequent file system checks (
chkdsk) or automated boot repairs upon startup.
