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Where to find PSU wattage monitoring apps?
Are there any Powersupply unit monitoring applications or utilities
that can tell me how many watts of power I am using at a givent time? |
#2
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Where to find PSU wattage monitoring apps?
On 2/12/2011 2:42 PM, Just Wondering wrote:
Are there any Powersupply unit monitoring applications or utilities that can tell me how many watts of power I am using at a givent time? I don't know of any software, and I have my doubts software could even do that, but you can buy a relatively inexpensive device called a killawatt: http://www.amazon.com/s?ie=UTF8&inde...ords=killawatt |
#3
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Where to find PSU wattage monitoring apps?
Just Wondering none none.com wrote:
Are there any Powersupply unit monitoring applications or utilities that can tell me how many watts of power I am using at a givent time? You are nym-shifting just so you can ask the same question twice in a row? -- Path: news.astraweb.com!border6.newsrouter.astraweb.com! not-for-mail From: Just Wondering none none.com Newsgroups: alt.comp.hardware.pc-homebuilt Subject: Where to find PSU wattage monitoring apps? Date: Sat, 12 Feb 2011 12:42:34 -0800 Message-ID: j4sdl65qacbs5sfde6b1m09evfuko9kau8 4ax.com X-Newsreader: Forte Agent 6.00/32.1186 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Lines: 2 Organization: Unlimited download news at news.astraweb.com NNTP-Posting-Host: 193c3e2b.news.astraweb.com X-Trace: DXC=9QPCNUQk=\c:PIc[8_6SKeL?0kYOcDh j]WEZ Q1WnGe\g^KX1`]9Cml9B_G1R=S=g4K6JA_iFfkH2VZWGBXUhC1:Mf5U_Emnb^` =E3f5Fc |
#4
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Where to find PSU wattage monitoring apps?
Grinder wrote:
On 2/12/2011 2:42 PM, Just Wondering wrote: Are there any Powersupply unit monitoring applications or utilities that can tell me how many watts of power I am using at a givent time? I don't know of any software, and I have my doubts software could even do that, but you can buy a relatively inexpensive device called a killawatt: http://www.amazon.com/s?ie=UTF8&inde...ords=killawatt The Killawatt device is the right answer, because it shows the power that is coming from the wall, taking ATX power supply inefficiency into account. A clamp-on DC ammeter can be used to make contact-less current measurements, using the power cables on the power supply. I make power measurements on systems here, using such a device. For example, if I clamp my meter around the two yellow wires feeding the CPU Vcore circuit, right now it would read 1.1 amps DC. Time 12V gives 13.2W while the computer is idle. (That is my wasted CPU power.) You have to measure all the rails, one at a time, with the clamp-on meter, do your times and sums, and get a total power that way. That gives power *inside* the computer, and doesn't take into account the fact that the power supply is 68 to 87% efficient. (Example of a clamp-on ammeter, which senses the magnetic field around a set of wires, and measures the current that way. These come in AC only and AC/DC models, and you need DC capability to measure inside the computer. Mine is nicer looking that a lot of these.) http://www.gd-wholesale.com/userimg/...imeter-480.jpg The motherboard has *no* ability to measure power consumption. They don't put current shunts into any of the rails, to make such a measurement. The Xbitlabs people, specially modify their motherboards with added current shunts, in order to do power measurements for their web articles. There have been special power supplies, with measurement capabilities built in. But I wouldn't trust such designs, further than I can throw them. Using the Killawatt, avoids all that detail, and just gives you a final number for the computer enclosure. No wasted time, no monkeying about. One nice feature, is the Kill-A-Watt features a KWH measurement. Say your mom insisted you pay her, for all the power your computer was using. You could turn on the P4400, and it keeps track of the total power used in real time (Kilowatt-hours). Say in a month, you used 100 KWH and the utility charges $0.07 per KWH. You could give your mom $7.00 for the month, then reset the P4400 and meter for the next month. http://www.p3international.com/manuals/p4400_manual.pdf Paul |
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