5 ms·

Anyone know the actual rules? Is it a hard limit on the amount of power a home computer can consume, or is it something more subtle like a limit on the power wh

by dn3500 5y ago

Anyone know the actual rules? Is it a hard limit on the amount of power a home computer can consume, or is it something more subtle like a limit on the power when its idling?

gizmo686 5y ago
For California: https://govt.westlaw.com/calregs/Document/IEEDE2D64EF7B4F168C0E85379828A8C2?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default) https://govt.westlaw.com/calregs/Document/IEEDE2D64EF7B4F168... See tables V-6 and V-7
- irjustin 5y ago
  Mostly V-7 it looks like. What's insane is trying to find this information directly on california gov website. all the links are broken.
  - MrStonedOne 5y ago
    the link isn't broken, its just chrome blocking the pdf because its not on https but the src site is.
    - irjustin 5y ago
      Really? I can't get to the original CEC announcements. From this article: https://www.npr.org/sections/thetwo-way/2016/12/16/505856155/california-is-first-state-to-set-energy-efficiency-limits-for-computers https://www.npr.org/sections/thetwo-way/2016/12/16/505856155... They cite: https://ww2.energy.ca.gov/2016publications/CEC-400-2016-010/ https://ww2.energy.ca.gov/2016publications/CEC-400-2016-010/ Searching the website for anything related to `computer` on the CA website doesn't give me the thing I'm looking for which is that table V-7 on a gov source (not a lawyer's website).
deleted 5y ago
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kart23 5y ago
https://govt.westlaw.com/calregs/Document/IEEDE2D64EF7B4F168C0E85379828A8C2 https://govt.westlaw.com/calregs/Document/IEEDE2D64EF7B4F168... ctrl+f for Desktop. It looks pretty complicated upon first glance.
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ttyprintk 5y ago
Intel mentions consumption at idle as the reason they redesigned for single-rail power supplies.
snuxoll 5y ago
From the fact sheet I found it’s mostly making sure the OS is configured for sleep by default and a minimum 80+ gold rated PSU if you have a 600W+ unit. Knowing Dell, it’s probably the power supply not meeting 80+ gold efficiency. EDIT: I guess there’s max allowed power during ACPI S3 state as well. 10.3W max for a system <32GB of RAM. That’s pretty rough, given even good quality DDR4 is going to need ~1.5W per DIMM during S3. But given base models of these systems will almost exclusively use 2 DIMM’s that still leaves 7W to idle with, tough but manageable. Not that it matters - nobody should be buying any of Dell’s Alienware desktops. The chassis provides terrible airflow and the components inside will thermal throttle like crazy.
- jsmith45 5y ago
  Is DDR4 refresh only usage power really that high? Regardless, the standard is that the sleep mode must be ACPI S3 or if it is not S3 it must meet the stated power criteria criteria, (and for most desktops the limit is only 5W if under 32GB). I'm not sure why an S3 sleep is good enough to not need to meet the specific limits.

by dn3500 5y ago

Anyone know the actual rules? Is it a hard limit on the amount of power a home computer can consume, or is it something more subtle like a limit on the power when its idling?

gizmo686 5y ago

For California: https://govt.westlaw.com/calregs/Document/IEEDE2D64EF7B4F168C0E85379828A8C2?viewType=FullText&originationContext=documenttoc&transitionType=CategoryPageItem&contextData=(sc.Default) https://govt.westlaw.com/calregs/Document/IEEDE2D64EF7B4F168... See tables V-6 and V-7

irjustin 5y ago
Mostly V-7 it looks like. What's insane is trying to find this information directly on california gov website. all the links are broken.
- MrStonedOne 5y ago
  the link isn't broken, its just chrome blocking the pdf because its not on https but the src site is.
  - irjustin 5y ago
    Really? I can't get to the original CEC announcements. From this article: https://www.npr.org/sections/thetwo-way/2016/12/16/505856155/california-is-first-state-to-set-energy-efficiency-limits-for-computers https://www.npr.org/sections/thetwo-way/2016/12/16/505856155... They cite: https://ww2.energy.ca.gov/2016publications/CEC-400-2016-010/ https://ww2.energy.ca.gov/2016publications/CEC-400-2016-010/ Searching the website for anything related to `computer` on the CA website doesn't give me the thing I'm looking for which is that table V-7 on a gov source (not a lawyer's website).

deleted 5y ago

[deleted]

kart23 5y ago

https://govt.westlaw.com/calregs/Document/IEEDE2D64EF7B4F168C0E85379828A8C2 https://govt.westlaw.com/calregs/Document/IEEDE2D64EF7B4F168... ctrl+f for Desktop. It looks pretty complicated upon first glance.

deleted 5y ago

[deleted]

ttyprintk 5y ago

Intel mentions consumption at idle as the reason they redesigned for single-rail power supplies.

snuxoll 5y ago

From the fact sheet I found it’s mostly making sure the OS is configured for sleep by default and a minimum 80+ gold rated PSU if you have a 600W+ unit. Knowing Dell, it’s probably the power supply not meeting 80+ gold efficiency. EDIT: I guess there’s max allowed power during ACPI S3 state as well. 10.3W max for a system <32GB of RAM. That’s pretty rough, given even good quality DDR4 is going to need ~1.5W per DIMM during S3. But given base models of these systems will almost exclusively use 2 DIMM’s that still leaves 7W to idle with, tough but manageable. Not that it matters - nobody should be buying any of Dell’s Alienware desktops. The chassis provides terrible airflow and the components inside will thermal throttle like crazy.

jsmith45 5y ago
Is DDR4 refresh only usage power really that high? Regardless, the standard is that the sleep mode must be ACPI S3 or if it is not S3 it must meet the stated power criteria criteria, (and for most desktops the limit is only 5W if under 32GB). I'm not sure why an S3 sleep is good enough to not need to meet the specific limits.