12th Generation Intel® Core™ Processors Datasheet, Volume 1 of 2
Datasheet
ID | Date | Version | Classification |
---|---|---|---|
655258 | 28/10/2021 00:00:00 | Public Content |
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Dynamic Power-Down
Dynamic power-down of memory is employed during normal operation. Based on idle conditions, a given memory rank may be powered down. The IMC implements aggressive CKE control to dynamically put the DRAM devices in a power-down state.
The processor IA core controller can be configured to put the devices in active power down (CKE de-assertion with open pages) or pre-charge power-down (CKE de-assertion with all pages closed). Pre-charge power-down provides greater power savings but has a bigger performance impact, since all pages will first be closed before putting the devices in power-down mode.
If dynamic power-down is enabled, all ranks are powered up before doing a refresh cycle and all ranks are powered down at the end of the refresh.