Live data from Hacker News

Mac Mini Pays for Itself After 2 Years

cjgill.wordpress.com

31–40 of 77 posts

Re: Mac Mini Pays for Itself After 2 Years

#31
post #24

auto sleep your computer after x minutes of idle. done.

Can you wake it up with an IR remote? If not, then auto-sleep is a non-starter for a set-top box. Just for example.

The Media Center remotes will wake/sleep your system. Windows Media Center does a fantastic job with sleep, actually. It'll wake up to record, then go back to sleep. If you hit "sleep" while it's recording, it will shut off the video output, then sleep when it's done.

Re: Mac Mini Pays for Itself After 2 Years

#33

A few people are debating the numbers, but I think there's a much more important message here. Consumers rarely factor in the total cost of ownership (TCO) of a computer, and only look at the retail price. I used to think this way, particularly because I didn't have much money, so I needed to buy the cheapest computer I could at a given time, resulting in paying more over the lifetime of the computer (which might not…

Saving on power in the datacenter is one of the worst ways to try to save money, in my experience.

It varies greatly, but $10 million dollars worth of servers, network gear, and storage might cost $25k/mo in power. Shaving 5% or 10% off that bill is practically meaningless. You can save a lot more money in other ways.

Obviously at massive scale (think Google) it's a different story, but for the average small-medium company it's not even worth thinking about until you've gone after everything else.

Re: Mac Mini Pays for Itself After 2 Years

#35
post #6
post #2

He might have saved even more electricity had he gotten a laptop with the same specs as the mini. My Dell Inspiron 1525 has a 65W power supply, vs the similarly-equipped Mac Mini's 110W, and that 65W includes the screen. Adding an LCD to the Mac Mini adds another 30-50W.

Is that the Mini's power supply max rating, or its average power draw? I'm guessing the mini has a bit of extra power for USB devices and when the processors really kick it up. Would be fairly easy to test... where's my multimeter..

That is the max. it actually slurps about 35W under load

edit: and then you need a display of some kind ;)

Re: Mac Mini Pays for Itself After 2 Years

#36
post #33

A few people are debating the numbers, but I think there's a much more important message here. Consumers rarely factor in the total cost of ownership (TCO) of a computer, and only look at the retail price. I used to think this way, particularly because I didn't have much money, so I needed to buy the cheapest computer I could at a given time, resulting in paying more over the lifetime of the computer (which might not…

Saving on power in the datacenter is one of the worst ways to try to save money, in my experience. It varies greatly, but $10 million dollars worth of servers, network gear, and storage might cost $25k/mo in power. Shaving 5% or 10% off that bill is practically meaningless. You can save a lot more money in other ways. Obviously at massive scale (think Google) it's a different story, but for the average small-medium c…

While I agree that for those numbers, 5% to 10% savings isn't worth the effort, this isn't a good reason to dismiss saving by reducing data center power. Nissan recently starting rolling out virtualization solutions for some of their datacenters, resulting in 34% energy savings. For the kind of numbers you list, that would end up being over $100k of savings a year.

Re: Mac Mini Pays for Itself After 2 Years

#37

Would love to know what his KWH consumption is per month. His electricity bill is 1/2 mine. Is electricity generally cheap in North America?

I pay $0.085 per Kw/H. That's lower than most of the US though. I can power my 1400 sqft house with a macbook pro running 24x6 for about $90/month.

Re: Mac Mini Pays for Itself After 2 Years

#38
post #8
post #2

He might have saved even more electricity had he gotten a laptop with the same specs as the mini. My Dell Inspiron 1525 has a 65W power supply, vs the similarly-equipped Mac Mini's 110W, and that 65W includes the screen. Adding an LCD to the Mac Mini adds another 30-50W.

Quite so, my Studio 1555 is a 65W unit and my LCD monitor is now aging. Even with my 60W Acer AL1916W drawing power I use less than the Mac Mini would. And when I don't need it I turn off the LCD. Doing a little math based off my electrical bill, my laptop and LCD (together) cost me $112.57/yr USD. At roughly $240/yr for the Mac Mini alone ... I'd say that my Dell laptop wins out.

http://www.goodcleantech.com/2009/03/its_official_apple_mac_...

"The mini uses only 15W while idling in our tests, and a low 34W while running the CineBench benchmark test. This is the second lowest active score, after the 18W observed on the Asus Eee Box nettop."

Moral of the story: Don't judge power consumption by power supply capacity.

Re: Mac Mini Pays for Itself After 2 Years

#39
post #29

Where is the wasted energy lost to? If it is lost to heat and you have electric heating in your house, would that lead to a correspondingly lowered heating bill?

Short answer : yes!

Long answer : in a certain limited case, it could be different. Maybe you are using your PC mostly during the day, and your house is badly insulated so most of the heat from the PC is lost. At night, you turn on the heating. Using the PC during the day has no influence on the amount of heating in this case.

Re: Mac Mini Pays for Itself After 2 Years

#40
post #6

Earlier quoted context omitted.

Is that the Mini's power supply max rating, or its average power draw? I'm guessing the mini has a bit of extra power for USB devices and when the processors really kick it up. Would be fairly easy to test... where's my multimeter..

That is the max. it actually slurps about 35W under load edit: and then you need a display of some kind ;)

I suppose. I use our house's mini as a fileserver most days. No screen needed. The 6+ hard drives connected via USB and Firewire probably eat more than 35W however. Other days its a media center and we're using the projector for a screen (which certainly eats up a great deal of power).
Post reply on HN