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Why Do Computers Use So Much Energy?

blogs.scientificamerican.com

51–60 of 174 posts

Re: Why Do Computers Use So Much Energy?

#51

Earlier quoted context omitted.

You could probably cut that consumption in half if people stopped using interpreted languages in production, quit telling curious young programmers that early optimization is evil or that memory is an implementation detail, etc. etc. The computer is very efficient, electrical engineers toil and sweat a great deal to make them so. Then we build things with Ruby and Python and make things 2 orders of magnitude less eff…

> no good reason If it takes a developer hours to build something that would otherwise take days, that's a very good reason. Processing power and energy are a tiny fraction of the cost of dev time. For things where scale matters, companies switch to faster languages with more optimization. This is irrelevant for what, 95% of businesses? Granted, probably half of devs are working for big tech where it does matter, but…

>energy [is] a tiny fraction of the cost of dev time

I think that is in a lot of cases not true, just that the developer (and his company) is not paying the bill but the buyer/user. While individually this might not be a lot, therefore the individual will not complain about it either, for applications with lot of users it will add up a lot. Let's say you have a application or a device with 1 Million Concurrent users, and you could reduce the power consumption by just 1 Watt per instance, this amounts to nearly 9000 MWh yearly, which as a total cost for end users in germany would amount to more than 2,5 Million Euro (+ the climate emissions). I am quite sure that in a lot of instances you could reduce the power usage by 1 Watt and that it would cost less than even 10% of the aggregated savings. Even simple things like game menu screens having no frame limiters and putting the GPU under heavy load have been a thing in the past (e.g. Diablo3 at some point). The issue is that the developer has no incentive to improve such things, except in the most extreme cases as he doesn't benefit from it but from a macro-economic and ecological perspective it would be beneficial.

Re: Why Do Computers Use So Much Energy?

#53
post #24

> Why Do Computers Use So Much Energy? Ads.

Also, wide character sets. ASCII is all anyone ever needed.

I don't understand. The prevailing encoding (utf-8) is only as wide as ASCII is for encoding the same characters, so you are getting what you want here, unless it's an internet without other cultures and languages on it.

Re: Why Do Computers Use So Much Energy?

#54

> Precise estimates vary, but currently about 5 percent of all energy consumption in the U.S. goes just to running computers 30% goes on transport. > the human brain is a computer. This particular computer uses some 10–20 percent of all the calories that a human consumes So society's computer uses 5 percent and our own, evolved over millions of years, uses up to 20. I'm not saying computers can't or shouldn't be made…

My thoughts exactly.

When reading the title I thought "They do?"

My laptop consumes the equivalent of approximately a single 60w incandescent lightbulb that used to be required just to write on a pad of paper in the dark.

It's capable of quite a bit more than that, however.

EDIT: Updated power specifications to exact amounts.

Re: Why Do Computers Use So Much Energy?

#57

Earlier quoted context omitted.

Also, wide character sets. ASCII is all anyone ever needed.

Don't know if you're trolling or not, but I fully agree. So much time could be saved by making the networks and internet ASCII-only

What if a client/user doesn't read/write English?

Re: Why Do Computers Use So Much Energy?

#58

> Precise estimates vary, but currently about 5 percent of all energy consumption in the U.S. goes just to running computers 30% goes on transport. > the human brain is a computer. This particular computer uses some 10–20 percent of all the calories that a human consumes So society's computer uses 5 percent and our own, evolved over millions of years, uses up to 20. I'm not saying computers can't or shouldn't be made…

I'm sure most of the computation to run society occurs in the human brains of the millions of workers.

Re: Why Do Computers Use So Much Energy?

#59

Earlier quoted context omitted.

Don't know if you're trolling or not, but I fully agree. So much time could be saved by making the networks and internet ASCII-only

What if a client/user doesn't read/write English?

Time would be saved because they won't use the system. /s
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