Property \ Grade | Economy Grade | Regular Grade | Professional Grade | Superior Grade |
Voltage Support | Single (either 5V or 3.3V) | 3.3V/5V Mostly Single; Some of them Dual | 3.3V/5V Dual | 3.3V/5V Dual |
Power Consumption | 50-80mA | 40-60mA | 30-40mA | 30mA |
Compatibility | Poor | Good | Excellent | Excellent |
Auto Sleep Mode | No | No | Yes | Yes |
Sustained Write Performance |
600KB/s 4X Speed |
1.2MB/s 8X Speed |
1.8MB/s 12X Speed |
2.7MB/s and above 18X Speed and above |
Sustained Read Performance |
600KB/s 4X Speed |
1.8MB/s 12X Speed |
3.6MB/s 24X Speed |
5.6MB/s 36X Speed and above |
Data Transfer(To/from host) | up to 4MB/s | up to 8MB/s | up to 16MB/s | up to 20MB/s |
Data Transfer(To/from flash) | up to 4MB/s | up to 7.5MB/s | up to 10.5MB/s | up to 12.5MB/s |
Idle to Read/Write | less than 20ms | less than 5ms | less than 0.01ms | less than 0.001ms |
Reliability Power-on MTBF |
9,000 hours (1.0 years) |
100,000 hours (11.5 years) |
250,000 hours (28.5 years) |
500,000 hours (57 years) |
Ruggedness-Shock Ruggedness-Vibration |
1G 0.4G |
50G 1G |
100G 15G |
1000G 15G |
Error Rate | 6/10000 | 1/1000000000 | 1/100000000000 | 1/1000000000000000 |
Warranty | 15 days | 30 days | 1 year if with Safeguard | 3 year if with Safeguard |