Mac pro early 2008 power usage

Smart-UPS units have been working well with PFC power supplies on datacenter-grade servers and devices for some time now. It's really a decision that's left up to your "risk tolerance". Thanks so much for the details! One last thing. I'm having trouble finding any information about the power supply in the Mac Pro. How can one tell if it's an Active-PFC power supply and what does that mean?

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Can you point me to any discussions of that? You would need to check the tech specs for your system on the Apple website. You will probably end up needing to call Apple and request the information, or check their forums. Choose a location. StruxureWare for Data Centers.


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Getting Started. Universal Transfer Switch. Mobile Power Packs. What a crime! TZ, UncleMac, other names I'll remember soon, you still out there? I had forgotten my username, but I remembered some posts, so I searched for them, recognized myself, updated my password, and here I am again.

Amazing how strong the memories are of these forums. Update: Power Supply I tried once again plugging the Mac directly into the wall, bypassing the power supply. Started immediately, and booted normally. To confirm that this was the problem, I then shut down, and moved the power cord back to the power supply. Again, booted normally! So, whatever is happening is intermittent. Could still be an intermittent problem with the power supply, or does it sound like something else?

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The power supply is one of the big APCs made for hungry towers, but it is old. Is it typical for them to behave inconsistently while dying? Any UPS can behave in almost any fashion when the batteries start getting some age.

I am naturally very jealous for the rights and liberties of my country, and the least encroachment of those invaluable privileges is apt to make my blood boil. Join Date Feb Location on the landline, Mr. Smith Posts 7, Welcome back. Mostly UPSes behave when the batteries are shot So much for "uninterruptible". I would run it from the wall for a while and see if the issue ever comes back.

This happens to us all the time with computers, and nobody thinks of complaining.

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My UPS quirk I've had a issue over the past year or two about once a month or every other month When I press the "power on" button to my iMac I get nothing. Pressing the power again in anyway does nothing. So then I'll plug it into the wall it boots up fine. So I shutdown, plug into the UPS "chime" boots up fine. So I forget about it for a few months - until it happens again. My UPS is 5 plus years old.

APC I've yet to figure if it's the iMac, UPS or me. Thanks for everyone's help. I'm going to get a new UPS. However, WiFi is not supported on this device. See our macOS Sierra page for more details and a link. Intel-based Macs use a partitioning scheme known as GPT. Only Macintel models can boot from GPT hard drives. Low End Mac is funded primarily through donations. All of our advertising is handled by BackBeat Media. For price quotes and advertising information, please contact BackBeat Media at This number is for advertising only. Welcome Image and Text.

Mac Pro Power Consumption | MacRumors Forums

Uninterruptible Power Supplies The AC power coming into your home or office is a sine wave, but some UPSes generate a square wave when you are operating from battery power. Details announced Mac OS X OS X AirDrop is not supported. Power Nap is not supported. CPUs: single 2. How you distribute memory between risers makes a difference.

Modding an Apple Mac Pro Power Supply