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| Description |
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| Volatility Description |
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| lose data) |
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RTC CMOS |
| BATTERY |
| Volatile Battery |
| No |
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| CMOS memory 256 bytes |
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| Stores CMOS information |
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Video |
| UMA |
| Volatile memory in off state. |
| No |
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memory – |
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| UMA uses main system |
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type – see |
| uses system |
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next column |
| DDR3. |
| main memory. |
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Hard drive |
| User replaceable |
| Non Volatile magnetic media, |
| Yes |
| Low level format |
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| various sizes in GB |
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CD- |
| User replaceable |
| Non Volatile optical/magnetic |
| Yes |
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ROM/RW/ |
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DVD/ |
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Diskette |
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Drives |
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All other components on the motherboard will lose data once power is removed from the system. Primary power loss (Unplug the power cord and remove the battery) will destroy all user data on the memory (DDR3, 1600/ 1333MHz). Secondary power loss (removing the on board coincell battery) will destroy system data on the system configuration and
In addition, to clarify memory volatility and data retention in situations where the system is put in different ACPI power states the following is provided (those ACPI power states are S0, S1, S3, S4 and S5):
S0 state is the working state where the dynamic RAM is maintained and is read/write by the processor.
S1 state is a low
S3 is called “suspend to RAM” state or
S4 is called “suspend to disk” state or “hibernate” mode. There is no power. In this state, the dynamic RAM is not maintained. If the system has been commanded to enter S4, the OS will write the system context to a
S5 is the “soft” off state. There is no power. The OS does not save any context to wake up the system. No data will remain in any component on the system board, i.e. cache or memory. The system will require a complete boot when awakened. Since S5 is the shut off state, coming out of S5 requires power on which clears all registers.
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