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Old 03-11-2008, 11:11 AM   #45
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Originally Posted by Rogue Nine
But they can answer simple questions like those posed in this thread.

No one asked for an academic paper on computer component power usage, just a general thought on CPU efficiency to aid in the purchase of one.
...a general thought? How informative are they! The greater the quality of information you give to people, the better they are armed to make a sound, informed decision.

People around the world ask this very question all the time...

Originally Posted by urluckyday & many others
Is there a major speed/efficiency difference between the AMD Dual Cores and the Intel Core 2 Duos? If you can offer any answer, first-hand experience, or even test results, that'd be greatly appreciated.
...and receive the stock standard answers, based on those limited test bed results. That's fine, but as long as people who rely on you for that information are told the limitations of what you are actually telling them. If you're not doing that than you really are no better than a slick salesperson

@jmac >> yes, we get all that stuff from Tom's etc. But it simply doesnt translate into real-world usage terms we can understand. If two almost identically spec'd pcs were used identically, what is the difference, both in terms of watt-hours and $$$ ?? This type of info is never given in such reports.

A report finding that has no practical relevance should carry little weight in terms of influencing purchase decisions.. however, when people report on/recommend a certain product(as you have done), giving testbed links is a trite way of backing up your recommendation as far as basing it on facts that actually mean something. Doesnt matter if its Intel/AMD or Ronald McDonald, those numbers and observations are simply not the "whole story"! I wish those testbed clowns would add a...

"*your individual results may vary, depending on overall component wattage and usage profile."

...disclaimer/caveat on their findings as far as power efficiency is concerned.

If people are making a query about energy efficiency, what is wrong with trying to arm them a fuller understanding of what pertinent factors are? I am thankful to the various persons that got me thinking about this stuff over the years. Ive been able to make changes that have literally saved me $100s of dollars a year as far as power bills are concerned..... surely thats more useful than a "general thought" ??!

so to urluckyday etc, from a power efficiency point of view, here are the basics to keep in mind:
*Your PC and peripherals are made of many current carrying parts. These coupled with the overall way you use them contribute to a more accurate description of your power consumption.

Rather than considering what the impact of one component will be on this energy consumption profile, you're better off thinking about:

Total power consumption of *all* your parts. Are their any particular parts you have that predispose your rig to being inefficient off the bat ? ie. why ask a question about power efficiency for a CPU when you have a 750W PSU, and an X2 gfx card or SLI/XF setup?

There are many online power supply calculators that will give an *approximation* of the wattage load ALL your components alone will be draining. if you are really keen on it, you can get meters that will *accurately* measure how much juice your pc is actually using. If you are really keen on seeing what changes you can affect that will impact on your power use/power bill, this is the best way. You can then change different variables, be it individual components, or (more usually) usage patterns to see what impact you will have.

Some quick n easy ways to make sure you are being power efficient.
1. Tweak your power management settings. Make a profile that is appropriate for the time you are actually on the pc

2. Not using the monitor? switch it off(or have your power management profile do it for you)

3. Game in shorter bursts. Helps naturally regulate temp of your whole system(not just the cpu)

4. Make sure there is good ventilation around the pc.. so many desk sets nowdays have a little cupboard or compartment the pc gets stuffed in.... these "pc incubators" do no favours to a pc as far as heat dissipation goes

5. Use Blackle! a truly great idea! lolz

I wont rabbit on about small form factor and energy star compliant kit, as Ive done that enough before They are worth considering though, if you are super keen on energy efficiency.

The great thing about optimising energy efficiency of your pc use is that it will maximise the lifespan of your kit(as opposed to thrashing and overheating it), and benefit your hip pocket with lower energy bills. The environmental benefits also go without saying 'Tis a win-win


Asinus asinum fricat

Last edited by Astrotoy7; 03-11-2008 at 11:38 AM.
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