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OS X - Operating System General OS operation information and support

OS 10.5 - Questions about how OS X uses Ram and more


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Thundermoon1994

 
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Member Since: Dec 26, 2006
Location: Kent, OH
Posts: 495
Thundermoon1994 will become famous soon enough
Mac Specs: 15" MacBook Pro w/ 2.4 GHz C2D, 4 GB RAM, 250 GB

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I currently have 2 Gigs of ram in my MBP and I'm trying to determine if upgrading to 4 is worth the money. Regardless of the level of activity, will Leopard use more RAM if it has more RAM? When I had an iBook with only 640 MB, Tiger only used-AT MOST-600 MB. When I got the MBP, still with Tiger, it would use as much as 1.9 GB. If I get 4 GB, will the system use the additional RAM so that not so much needs to be run as slow virtual memory? My computer runs great now, but often I run XP on Fusion and I have a slowdown sometimes.

I have a fiance who has a (September 2007) MacBook with 1GB and a friend with a (2006) MacBook with only 512 MB. If I get the 4GB, I believe that I will be able to give my fiance my 2 GB and my friend the 1GB from my fiance's computer. Is this right?

Thanks for any insight you guys can provide.

-- Unibody 15.4" MacBook Pro (2.4 GHz Core2Duo Penryn, 250 GB HD, 4 GB RAM, nVidia GeForce 9400M & GeForce 9600M GT w/ 256 MB) --
-- 8 GB iPhone 3G -- 30 GB iPod Video --
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louishen

 
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Member Since: Oct 22, 2007
Location: London
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Mac Specs: Mac Mini Core i7 2012 | White 2009 MacBook 2 Ghz | 733 Mhz G4 Quicksilver

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Yes OSX will use as much as you give it, and do more caching in RAM,

All those macs you mention use 667 Mhz PC2 5300 DDR2 memory, so you can donate your old ram to those who need it
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Thundermoon1994

 
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Member Since: Dec 26, 2006
Location: Kent, OH
Posts: 495
Thundermoon1994 will become famous soon enough
Mac Specs: 15" MacBook Pro w/ 2.4 GHz C2D, 4 GB RAM, 250 GB

Thundermoon1994 is offline
Thanks! I appreciate that.

-- Unibody 15.4" MacBook Pro (2.4 GHz Core2Duo Penryn, 250 GB HD, 4 GB RAM, nVidia GeForce 9400M & GeForce 9600M GT w/ 256 MB) --
-- 8 GB iPhone 3G -- 30 GB iPod Video --
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Thundermoon1994

 
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Member Since: Dec 26, 2006
Location: Kent, OH
Posts: 495
Thundermoon1994 will become famous soon enough
Mac Specs: 15" MacBook Pro w/ 2.4 GHz C2D, 4 GB RAM, 250 GB

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I received and installed my new RAM last Wednesday. I've been very pleased with it, but I have a new question. Is it normal for OS X to convert inactive memory to free memory? My computer has been running for 16 hours, and a little bit ago, my "free memory" jumped from a few hundred megabytes to 2.87 GB. It was not preceded by closing a bunch of applications or any other activity at all. I was just doing some websurfing and the computer slowed down for perhaps 15 seconds (beach balled), and then iStat menu reported the change in free memory and everything is fine.

Is this normal?

-- Unibody 15.4" MacBook Pro (2.4 GHz Core2Duo Penryn, 250 GB HD, 4 GB RAM, nVidia GeForce 9400M & GeForce 9600M GT w/ 256 MB) --
-- 8 GB iPhone 3G -- 30 GB iPod Video --
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Thundermoon1994

 
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Member Since: Dec 26, 2006
Location: Kent, OH
Posts: 495
Thundermoon1994 will become famous soon enough
Mac Specs: 15" MacBook Pro w/ 2.4 GHz C2D, 4 GB RAM, 250 GB

Thundermoon1994 is offline
bump

-- Unibody 15.4" MacBook Pro (2.4 GHz Core2Duo Penryn, 250 GB HD, 4 GB RAM, nVidia GeForce 9400M & GeForce 9600M GT w/ 256 MB) --
-- 8 GB iPhone 3G -- 30 GB iPod Video --
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