IMac :: 20 Inch Keeps Powering Off?
Nov 17, 2010
i need to know whether its a hard drive issue for not. My mac started to switch itself off completely with no warning. Recently it will literally come on for a few minutes and go off again. I then have to wait some time (and i usually n plug it and re plug it in) before it works again. I wonder whether something has been dislodged perhaps. Im poised to go and buy a new hard drive but if you think its something more serious then i wont bother.
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Oct 20, 2009
The new 27-inch iMac uses up to 365W vs 280W for the old 24-inch! (going by Apple's published max. power consumption numbers. I doubt they would lie because it isn't exactly favourable for them to put in falsely high numbers in an environmental report).
That means there's some extra beef behind the extra components. Perhaps the ATI 4670 is a bit overclocked and the 4850 runs a bit faster than the old iMacs? Admittedly that 2.8 GHz i7 is going to suck a fair bit of power - the recent 2.8 GHz i7 860 model runs at a 95W TDP, however, the quad core iMac isn't available until November. So it won't be using the i7 860, and my guess it is using another custom processor, something a bit more power efficient, somewhere in between the 55W TDP of the old iMacs and the 95W TDP of the i7 860.
The difference between the power consumption of the two computers is 85W. The old iMac had a 24-watt digital amplifier, this new one has two 17-watt amplifiers. That brings the delta down to 75W. Say the iMac's i7 processor has an 80W TDP. That now brings the delta down to 50W. The new display likely wouldn't increase power consumption because of the LED backlight.
I'm not sure if I'm missing much (OK, two extra RAM chips may use another few watts), but there is still a fairly massive 50W unaccounted for.
Just a bit of fat to chew on
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Sep 12, 2009
Does anyone know if the panel used in Apples 24 inch Cinema display is the same as the 24 inch iMac?
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Jul 29, 2010
Hello everyone, I'm currently looking to buy a 27 inch imac and can't decide whether to get a base i3 27 inch or a refurbished i5 quad core 27 inch. With the i3 I can get the student discount and qualify for the ipod, but the i5 is 23% off right now. Which should I get? Also is there a benefit of getting a 5 series graphics card over a 4 series graphics card?
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Jul 1, 2008
I bought an iMac G3 at an auction, it is the Indigo version with 400MHz G3 processor, 10GB HD, hope that's enough to work out which one. It will simply not boot up at all, when I first got it I switched it on and it done the Apple chime sound, then nothing, no power light at all. Now if I press the power button, no power light, no screen, nothing, although the screen sounds like it is coming on (the static sound and the degauss coil), no more chime or anything, as well as the CD drive sounds liek its searching for a disc, and the hard drive clicks a couple of times. I do not have an Apple keyboard or mouse, and am using a standard wireless USB keyboard and an optical wheel USB mouse. I don't know if it just needs OS9 on it (it says that on the sticker on the bottom) and if that is the only problem. I pressed the PMU reset button in the RAM flap while it was not connected to any power, and this hasn't done anything.
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Jun 3, 2007
Until yesterday, my iMac G3 slot is working fine, but today, I can't power it up. When I press the power button, the light just flash and then went off. I've opened it up to check the PRAM batt and also checked if there are any shorts on the logic board. All looked ok to me. The HDD is working fine and I supposed the power supply unit is fine too.
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Dec 10, 2014
As a new user of Yosemite I noticed that after powering up my iMac, there is a download bar on screen. This happens every time and I would like to know just what its doing...?
Info:
2.8 GHz Intel Core 2 Duo, Mac OS X (10.5.2)
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Jul 8, 2009
I recently purchased a Mac mini As you all know, the Mac mini has its power on button in the rear of the computer. Due to a stroke I am in a wheelchair and my right side is paralyzed. This means that I have to have my mother or brother turn on the Mac mini for me. Does anyone know of a push button type of device that I can use to power on, and off, my Mac mini? While "push button" would be nice, the powering on device can be a switch. I fully realize that I can leave the Mac mini running 24/7 which I do very often. However, during thunder storms I like to shut the Mac mini off entirely. I do not want to take any chances. I know of a few people (including me with my old Power Mac) who left their computers on during a thunder storm and their computers got zapped.
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Dec 9, 2014
I have a late 2009 27-inch Imac, The display stopped working over a year ago, and i have been using an external display,
I recently installed BootCamp with win7 and now the built in Display has started working, but only when i am running windows.
Info:
iMac (27-inch Late 2009), OS X Yosemite (10.10)
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Nov 18, 2010
I got a MacBook Pro back in April, my first Mac.
I love it so much. I'm really into video editing and HD video, but the problem is that my MBP is running out of harddrive space, and I'm longing for a bigger display and a better processor. (I have the 13" C2D). I'm going to pick up an iMac this Spring. But I wanted to know if I should stick to the Core i3 21.5, or spend more and go for the 27 inch.
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Jul 27, 2010
Is the new 27 inch cinema display any different the the displays on the 27 inch iMac??
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Jul 15, 2008
so i go to turn my imac on tonight and it makes the normal noise when it always turns on but the screen stays blank(light blue)....after about 2 minutes this little picture of a folder with a question mark shows up in the middle of the screen. it keeps making this clicking noise as well. ive tried unplugging everything and restarting it here is a pic of what the thing that pop ups looks like [URL]
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Jul 29, 2010
I am trying to decide which of these two 27 inch imacs I should buy:
27 inch 3.06 core 2 duo model
27 inch 3.2 I3 model
Is the 27 inch 3.2 ghz I3 model a better value in terms of increased computer and graphics performance and is it better to get the 2nd generation model because of prior issues (i.e. yellow tinge)?
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Sep 16, 2009
I recently read somewhere that I can actually change the graphics card on my mac. If so where can I buy the ATI Radeon 4850 graphics card? and how much will that set me back?And could I get this upgrade done by my local nextbyte retail store?If it is possible to have nextbyte upgrade my card would they send it off to apple?
I really just need this card so I can play aoe3 on all settings high and be able to handle games like cod4, quake and all those graphic hungry games.
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Oct 25, 2009
Will a mahogany color desk like the desk at target [URL]go good with a 27 inch iMac thanks in advance
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Nov 4, 2009
I have a new 27inch base model iMac that comes with 4GB ram and a 4670 256mb Radeon graphics card. I noticed that when I copy/paste images in photoshop cs4 and drag the images, the pasted image usually gets blocky and moves in slow motion when i drag it. My friend has a Mac with a 512mb video card and 4gb of ram and has no such issue. I'm wondering if the difference in VRAm is what is causing my sluggishness in Cs4
My question is: should I have opted for the 512 model graphics card? I have another week or so to return my iMac. Or is this a RAm issue, and should I upgrade to 8gb of ram? I guess I'm wondering how much of a difference video memory makes on system performance. Thanks!!
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Jul 31, 2010
[URL]For $170, you can finally have an eSATA port!
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Sep 29, 2010
currently my imac 27 inch has gotten really hot , around 76 celsius or so only in 15 min of use. And he GPU would sometimes hit 57. I would expect the fans to be on high, but Im not really hearing much. Does anyone have a solution to this?
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Nov 18, 2010
Over the past few months of research on the iMac I have noticed that the HDD's are anything from a Seagate, Western Digital or an Hitachi. Are there any other brands found in the iMac? Which one is the best? (as in silent)
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Jun 21, 2010
In the current high end Imac 21.5 inch a ATI Radeon HD 4670 with 256 MB does the GPU work. When i am looking at the new macbook pro a NVIDIA GeForce 320M for the cheap ones and a NVIDIA GeForce GT 330M with 512 MB for the high end does the GPU work. What GPU will the new iMac have? the same as the macbook pro line or a better one?
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Jan 11, 2011
I was wondering if anyone here has the 27inch i3 iMac? From most of the posts on the forum, it seems most 27inch owners have the i5 or i7.
The reason I ask is this; I am planning on selling my mid/late 07 24inch iMac and purchasing one of the newer ones. I realise that the best value for money is the base 21.5" i3, however I do want the better graphics card.
The difference in price between the two 21" models is 256GBP here in the UK. However, the difference between the 21" and the i3 27" then becomes only 153GBP, which seems relatively small for the huge increase in screen size.
My uses can be considered quite average; my profession is not in the video/photo industry and hence I don't do anything that can be considered extremely heavy.
What are peoples' experiences with the 27" i3? Further, what are peoples' experiences with such a huge screen size in general? Is it 'too' big?
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Apr 25, 2010
I use on my iMac 21.5 inch a eye tv 250 plus do I need to connect it to this to let the PS3 work and have some experience of it works or does it.
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Jan 21, 2010
I am about to buy my first mac and am going with the new 27 inch iMac but I can't decide on the i5 or i7. Is the i7 worth the extra $200? As far as I know they both have the same components except for the processor. Also, from my research online, speeds don't look to be all that much faster with the i7.
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Apr 10, 2010
I have used my gps on my g4 tower. I had to first get it recognized on a pc but then it worked on the g4. Now I have an imac 27 inch i7 and the garmin nuvi 850 is not recognized though it shows it is connected on the garmin screen.
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Sep 21, 2010
I'm looking for a stand specifically designed for an iMac. Does anyone know where I can find one? I think I need something around 3-5 inches higher?
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Apr 13, 2008
does anyone who has the 24in iMac have any problem with the sound from the speakers? Sometimes when I listen to music on iTunes I will then get a screeching sound for a few seconds then it will go off.
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Oct 20, 2009
Apparently there might be a way to convert the HDMI to a miniDV display.
Is this really possible?
Has anybody really achieved it?
What kind of cable/adapter do you need to buy?
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Oct 23, 2009
I heard this is possible, however will it be possible with a windows laptop ( dell e6400) It's a work laptop and wasn't sure If I could do this with some sort of adapter.
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Oct 29, 2009
I am thinking of buying the base 27 inch iMac and upgrading the hard drive myself. I read few threads here of people doing it but I am concerned about breaking the glass while lifting it off. I am somewhat handy having replaced the hard drive several times on my white iMac which is no picnic. Any thoughts on this from people who have taken off the glass on the new mac or even the older 24 inch display glass?
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Nov 16, 2009
Supposedly this was fixed with 10.6.2
Anyone else still experiencing this?
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