Fan noise when screensaver starts

Hi
I've been reading about this issue but don't find any post that relates fan noise with screensaver.
I had fan noise problems similar to some posted... things got better,but now it only becomes unbearable when the screensaver starts.
Any ideas ?

I'm experiencing the same issue since I've replaced the standard Nvidea for an Ati Radeon HD3870 video-card. When the screensaver starts the noise of the fans increases. Don't understand it since it's just the solid colors effect.. :-s

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in the future, buy this, this is what the Pros use:
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I bought a new iMac from bestbuy during the last week of april 2013.
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Harry Katz wrote:
I am brand new to Logic Pro, like just installed it an hour ago. Could anyone direct me in the menus to the place I need to go to be able to record without that background noise?
Turn off the fan.
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2.- Can you place the mic so it's null point is directed at the fan noise source, so it does not pick up as much of it? (If you do not know what a null point of a microphone is, you really ought to pick up a basic recording book at your local bookseller).
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All -
I'm fairly certain I have to take my PB in for service, but I'd like to verify that first, since my warranty expired two months ago.
For the past two weeks or so, every time I start up a video-intensive application (such as world of warcraft), the fan quickly spins up to high power. That's normal - but it's been making a high pitched buzzing sound that is definitely not normal. It originates in the upper left corner, at about the top of the speaker (which I disabled to verify it). Further, I run multiple desktops, and if I leave the game open but switch to another desktop (using Desktop Manager .5.3), the noise generally subsides in 10-20 seconds. This makes me think it's some sort of fan attached to the video card...? Comments? Thoughts?
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When the notebook is just standing even on a table, I hear this buzzing sound we can read about in another thread. But really quiet. I have to put my ear quite close to the keyboard.
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Thank you for your answers!
Unfortunately we do not have the same service infrastructure in Germany as over here Apple distributes its products primarily through premium resellers. The original Apple stores are just starting in Europe. But the resellers have their own Apple certified service technicians. I hope the fan replacement really doesn't take longer than one workday.
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Also don't play Host.
Allow rthe person with the fastest Connection Upload and download be Host.
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Some very fast can send you data faster than iChat and your service can deal with it.
This cause iChat extra work as it drop frames and tries to keep the Audio in Sync.
At certain points it cannot manage the Audio Sync and it will drop the Audio.
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10:16 PM Saturday; June 30, 2012
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
 iMac 2.5Ghz 5i 2011 (Lion 10.7.2)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro 2Gb (Snow Leopard 10.6.8)
 Mac OS X (10.6.8),
"Limit the Logs to the Bits above Binary Images."  No, Seriously

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hey
ive been putting together this song recently but on a few tracks, when it ends or starts there is this popping noise right as it comes in. Any suggestions?

hi
are these tracks you have recorded i.e audio?
If so you could open them in the sample editor and move the start position a fraction to avoid the popping sound.
Also, try adding a fade to the region beginning and/or end in question.
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its bound to be noisey thrashing round at that speed.
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Fan noise when screensaver starts

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