?
Solved

How much power is used when in StandBy mode

Posted on 2004-08-11
3
Medium Priority
?
452 Views
Last Modified: 2012-05-05
I'm just curious of approximatly how much power is used when my computer is in standby mode?

amd 2500 +
2 7200 rpm hard drives..
CPu fan, case fan, chipset fan,
360 watt power supply..
thanks

0
Comment
Question by:Arron_S
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 69

Expert Comment

by:Callandor
ID: 11778375
That would really depend on what your ACPI power settings were.  Here's an article on hard disk power savings: http://www.princeton.edu/~lzhong/publications/dard/node6.html
0
 
LVL 5

Accepted Solution

by:
Blue_Rishi earned 500 total points
ID: 11778919
Callandor is right. However, let me give some more detail...There are 5 ACPI states (S0 - S5), in S0 the computer is working and S5 means the computer is off (still consuming some power on ATX as the mainboard still receives power). S1 through S4 are so-called sleep states, in S1 and S2 the CPU is stopped and the mobo is slowed down; the monitor and hdd might be turned off too (if set to do so). S3 is reffered to as suspend to ram (mostly known from laptops) here the whole system is shutdown except for memory and wake-up signals. The memory enters a slow refresh state, thereby consuming less power too. S4 is reffered to as suspend to disk, known from the windows hibernate function; memory contents are stored on disk and the system is powered off. CRT monitors use anything between 1-15 watt when in standby/sleep/off mode (screen blank is not for powersaving but to prevent burn-ins, much like a screensaver). S3 should be consuming less then 30 Watt, while S4 should consume less then 5 (as will S5). Other states S0-S2 will depend on your system and configuration. Some manuals (monitors, mobo's, etc.) will acually state the power consumption when operating and when sleeping. If you can get all the numbers, you can do the math.  

Hope this anwers your question,

Blue Rishi

0
 

Author Comment

by:Arron_S
ID: 11779911
Hey thanks Blue Rishi
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This paper addresses the security of Sennheiser DECT Contact Center and Office (CC&O) headsets. It describes the DECT security chain comprised of “Pairing”, “Per Call Authentication” and “Encryption”, which are all part of the standard DECT protocol.
This article shows how to use a free utility called 'Parkdale' to easily test the performance and benchmark any Hard Drive(s) installed in your computer. We also look at RAM Disks and their speed comparisons.
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…
Have you created a query with information for a calendar? ... and then, abra-cadabra, the calendar is done?! I am going to show you how to make that happen. Visualize your data!  ... really see it To use the code to create a calendar from a q…

800 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question