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Undervolting can make your CPU use less power and produce less heat. It’s popular for people attempting to overclock because of the thermal headroom it gives- e
by dijit 2y ago
Undervolting can make your CPU use less power and produce less heat. It’s popular for people attempting to overclock because of the thermal headroom
it gives- essentially its the same concept as overclocking in that the silicon lottery can mean CPUs can be better than their factory tuning because Intel is hitting the lowest common denominator in the stock config.
I have used this to moderate success on a 8th generation mobile Xeon to drop the temps ~7C under load, and get the system idle from 6w to 4w (going lower would have been really hard as at that point the CPU was responsible for very little of what remained).
Undervolting is not the same as downclocking, it is supplying less voltage which has a strangely profound impact with no performance loss. However your system can be much less stable.
- nottorp 2y ago> a strangely profound impact Something like power consumption being proportional to the square of voltage iirc.
- whalesalad 2y agoMobile Xeon? Pardon?
- dijit 2y agoYeah, Dell Precision 5520 with Xeon E3-1505Mv6 I loved it. https://www.dell.com/support/manuals/sv-se/precision-15-5520-laptop/precision_5520_om/technical-specifications?guid=guid-32e2fd6d-3734-4e0a-a340-d8164e73523e&lang=en-us https://www.dell.com/support/manuals/sv-se/precision-15-5520...
- Moto7451 2y agoThere are multiple tiers of Xeon. The “base” tier (I am very much over-simplifying) is the same silicon as consumer desktop/mobile with some features turned on like ECC. Mobile workstations and the like get Mobile Xeons. It’s less crazy than Desktop Replacements with socketed Desktop CPUs.
- bee_rider 2y agoIt’s a pretty fuzzy barrier anyway. Like the original Skylake i9 desktop chips were basically just Xeons, right? It isn’t like there’s anything magic in a Xeon, it’s just a bunch of cores, why not pop one in a laptop… just don’t hurt your back carrying the power brick.
- ComputerGuru 2y agoStill rocking my Intel Xeon E3-1545M v5 (Skylake) from 2016. It was the only way to get ECC ram on a mobile workstation.