3 ms·
Can PCID (like HyperThreading, full L3 cache, or extra PCI-e slots in the latest i7s and i9s) be enabled with an update that blows those (e)fuses.
by dannyw 9y ago
Can PCID (like HyperThreading, full L3 cache, or extra PCI-e slots in the latest i7s and i9s) be enabled with an update that blows those (e)fuses.
- pgeorgi 9y agoefuses typically have a final efuse to be blown in manufacturing to prevent any further modification of the entire block. Otherwise there's way too high a risk of some broken code accidentally changing the configuration.
- monocasa 9y agoI don't think it's a feature that's binned off. Intel used to bin off virtualization support (which PCID is technically part off), but they added PCID after they stopped binning on virtualization support.
- loeg 9y agoPCID is supported by low end consumer CPUs since 2010 or so. I don't believe it exists in a disabled form on any hardware. (Maybe I'm mistaken.)