Memory normally refers to RAM. Temporary, high-speed storage used to keep frequently accessed information available for use and helps keep the computer running smoothly

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After downloading file installer process runs and uses all memory

When I download a file from the internet a process starts with name "installer" and uses all the available memory until my Mac crashes. It's not related to the browser — I tested with Chrome and ...
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4answers
5k views

Will upgrading RAM on my Macbook Pro significantly improve speed?

I have a mid-2012 Macbook Pro 13, 2.5 GHZ, non-retina, with 4 GB RAM, running Mavericks. I occasionally get the swirling beach ball when running various applications, such as XCode and iPhoto (not ...
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310 views

How is swap on mid-2013 MacBook Air w/ PCIe SSD?

There appears to be confusing and incomplete information about the PCIe SSDs in mid-2013 MacBook Air 11" and 13" (especially the 128GB models), where a different queue depth may result in different ...
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2answers
346 views

RAM Caching - Exploiting RAM to the fullest extent possible

This may seem weird, but I'm actually looking for ways to increase my memory usage. I have a Macbook Pro (8,1) with 4 GB that I updated to 16GB. I really feel like I'm losing a lot for those 10 ...
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5answers
6k views

iMac with 8GB RAM — memory always almost full

I have a 27'' iMac (Late 2012, OS X 10.9.2) with 8GB RAM. The usage of memory is always above 7GB, even though I don't think I am running that much stuff. This leads to the occasional hanging of a ...
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2answers
283 views

Can I install 64 bit software on a 32 bit macbook pro

I have mac book pro, Processor: 2.16 Ghz intel Core Duo, Memory: 1 GB 667 Mhz DDR2 SDRAM, Model Identifier: MacBookPro1,2, Total Number Of Cores: 2, Boot ROM Version: MBP12.0061.B03. uname -a: Darwin ...
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1answer
356 views

How to upgrade RAM of MacBook Pro 15-inch, Mid 2012

I want to upgrade my MacBook Pro 15-inch, Mid 2012. It has now 8 GB of RAM. I want to upgrade it to 16 GB. Any suggestion on how to do this are greatly appreciated.
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1answer
36 views

Hits ram ceiling on boot

I just restarted my Late 2011 Macbook Pro. 3.58Gb-3.71Gb / 4.00GB are being use right out the gate. It takes forever for anything to load. I'm very interested in purchasing new ram, but for the time ...
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38 views

Advice in buying second hand Mac Book Pro?

i'm windows and linux user. Basically, i'm interested in mac because i'm web developer. Some of the development tools are run well on macs. Requirement (if required) I'm going to buy it in ...
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31 views

Get RSS Memory usage from entire OS on command line

I need to get the entire count of RAM being used on a command line. I can get individual process RSS usage using ps -o rss= -p #{pid} How do I get all the memory usage for the entire system on the ...
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1answer
30 views

“disk full” error — quota disagrees with system information

When I try to download anything or create/save new files, it fails saying "Disk full". Entering quota in terminal tells me around 417600 blocks have been used out of 512000. However, going to About ...
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69 views

What causes playing a video in browser to take up all the RAM?

I've been noticing lately that when I'm playing a video on my Mac from say Hulu, Netflix, Youtube, any video site via a browser, the computer gets extremely laggy for 5 minutes and then acts normal. ...
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2answers
169 views

New DDR3 Memory for Mac Mini

I bought a Mini last year and I want to update the RAM. I was shopping around to find some compatible memory and found (this)from a Spanish retailer. They are selling what you see on the picture and ...
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2answers
347 views

Are number of desktops affecting memory?

I use 8 desktops on my MBP for my different apps. Do you know if it can affect memory use?
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48 views

800 MHz DDR2 registers as 667 MHz

I upgraded my mid 2009 macbook 5,2 with two fresh DDR2 RAM, one 2 gig 800MHz and one 4 gig 800 MHz. When plugging these in one at a time they register nicely as running at 800, but both at the same ...
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1answer
1k views

Macbook Pro (5.1 Model Late 2008) 16GB RAM upgrade

Can I add 16GB of RAM in my MacBook Pro (5.1 model, late 2008) running at 1333 DIMMs?
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1answer
2k views

How to find out which Safari tab is using massive memory?

As described in my other question, Safari on OS X 10.6. is causing me massive problems (with my way of working like having many tabs in Safari open for a long time). I just realized that after ...
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1answer
2k views

Safari makes my MacBook incredibly slow - what to do?

System configuration I'm working with a MacBook 2,16 GHz (13" white with the max. 3 GB RAM from about 2007) and "Snowleopard" OS 10.6.8. The problem: performance After a while, the MacBook becomes ...
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2answers
136 views

2011 27'' iMac kernel panic

My iMac has been giving Kernel Panic recently. its 2011 27in iMAC, and i added 8G RAM about one and half month ago. Around 2 weeks later, the error started and i upgraded the firmware. now im ...
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296 views

Reduce Maverick Memory Footprint

I'm using a macbook air 2014 with 8GB, also running Parallels a lot so wanted to reduce memory usage of OSX. Already disabled voice dictation that freed up around 500 mb. Any other tricks/tweaks?
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1answer
1k views

Is the CT3309352 Crucial memory the same as CT2K4G3S1067M?

I am trying to help my brother and sister in-law upgrade their 2.26 GHz Intel Core 2 Duo Mid 2009 MacBook Pro (MacBook Pro5,5) to Mavericks. The Mac is currently running Mac OS X 10.6.8 and has only ...
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1answer
11k views

Restoring iPhone as a new iPhone but backing up contacts

I have an iCloud account, but I am backing up via iTunes. I want to restore my iPhone because of the "other" files taking up a really huge portion of my phone's memory (2 GB and I have only ...
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2answers
74 views

Others in Macintosh HD

How can I reduce the size of my HD folder? I have more than 22 GB in "others". It is actually using more memory than my documents and apps and does not show contents. I have deleted the main info in ...
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1answer
946 views

How to improve old, slow iMac — new SSD? Or more RAM?

I have an old iMac for the kids: iMac 8,1 Core2 Duo with 3GB (2+1) RAM that was recently upgraded it to Mavericks 10.9 It's running quite slow; free RAM is always pretty low. Apps run "OK" once ...
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1answer
340 views

Can Apple Diagnostics be wrong about memory issue?

I am looking for a second opinion on an issue with my brand new iMac. I purchased a new iMac direct from Apple about 3-4 weeks ago, and initially everything was fine. However, in the last few weeks ...
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2answers
731 views

OSX Mavericks using up RAM

I've had Mavericks installed for over a few months now, and the computer has slowly been degrading since then. Before I installed Mavericks, my computer ran fine; now it is always using up all 4 GB of ...
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4answers
3k views

Installing two DDR3 SO-DIMMs as non-matched pairs in a MacBook

I've just upgraded my girlfriend's MacBook (I think it is a 2011 Model, one of the last white plastic ones) to Mavericks, and it has slowed down significantly. I'd like to upgrade the RAM on the ...
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2answers
243 views

Memory tester for Snow Leopard

Can somebody suggest a memory tester for Snow Leopard (10.8)? Command line or other doesn't matter, ideally something that doesn't have to be installed though (doesn't change the machine) and just ...
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1answer
181 views

Installing and Upgrading Ram on a mid 2011 iMac (different size RAM)

Apologies for my ignorance here, as the title suggests I am looking for advice on upgrading the Ram on my mid 2011 iMac. I have bought 2x4GB and the iMac already has 2x2GB. I found the question was ...
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1answer
185 views

How do I stop my external hard drive from using all my RAM?

I'm running OSX Mavericks, and have an external 500Gb HD connected via firewire. I have 24GB's of RAM, and fairly often my RAM usage will spike to 23.95 GBs in use and literally leave me with only 50 ...
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1answer
113 views

MacBookPro Ram Frequency

i have a MacBookPro 5,5 (Intel Core 2 Duo 2,26GHz) with Snow Leopard. Actualy i've 2 ram block of 2GB (total 4GB) of DDR3 at 1067MHz. Now i'm buying 2 ram bloc of 8GB of DDR3 but at 1600MHz, could ...
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1answer
50 views

Does my 21.5 inch Late 209 iMac support mixing and matching memory modules?

I have looked at this question, and apparently my iMac does support mixing memory sizes. However, when I installed 2 4GB memory modules and 2 2GB memory modules, when I clicked  → About This Mac → ...
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1answer
323 views

Memory test that fails with a different address each time

I had problems (strange patterns on the display and reboots) with my Late 2011 Macbook Pro, so I ran Apple Hardware Test on my computer, and it found memory errors. The thing is that every time I run ...
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1answer
38 views

iMac mid 2011 RAM upgrade compatability

Is this RAM going to be compatible with a mid 2011 iMac 21.5"?
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2answers
1k views

Why does speech recognition take up 1 GM or RAM suddenly? And GMail in Safari 738 MB?

I did enable speech recognition just in case, but very rarely use it, and I did not remember even accidentally activating it since bootup. Now I simply have a few apps running under Mavericks, and I ...
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1answer
10 views

Upon boot up why is there usage in Inactive and Page In for memory?

I understand the concept behind the various memory usage, but I don't understand why there are Inactive memory and Page In upon boot up. There are no applications that have started which hasn't ...
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1answer
911 views

Possible to increase the RAM on a MacBook Air?

I have a 13" MacbookAir with 4GB of RAM and I was interested in adding some more RAM. I have heard some people say that this cannot be done on the Air. Is it possible to add more RAM to a MacBook ...
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9 views

What would I see if my iMac is running in dual channel mode? [duplicate]

I only see in Hardware overview MEMORY: 8 GB How do I know its dual channel or not?
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2answers
202 views

How do I find the installed RAM layout in my MacBook without opening it up?

I have a mid-2009 MacBook with 4 GB of RAM installed in it and I'd like to upgrade it to 8 GB of RAM. In order to do that I have to figure out what the installed RAM configuration is so I can ...
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1answer
82 views

Inactive memory vs swapping

I'm trying to process a large dataset in java, and so I set my -Xmx11G. 1 thing I observed is, when I use xmx and the Jvm starts, the amount of inactive memory jumps up by about that much. Later, I ...
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3answers
949 views

Almost 450 MB consumed on empty external hard drive

I have an old Macbook Pro with 500GB hard disk. The MBP stopped working. I am now using that hard disk as external storage. After erasing the data (using Disk Utility), I see that almost 450MB is used ...
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1answer
4k views

vm_compressor_mode (vm.compressor_mode) values for enabled compressed memory in OS X

Background In Super user, with an accepted answer: Disable compressed memory in Mac OS 10.9 Mavericks? Also in Super User: how to get memory compress back in Mac OS 10.9 Mavericks? – and ...
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3answers
3k views

Increasing available RAM on Bootcamp under Win7

First the good news - I've successfully used WinClone/Sysprep to migrate a Windows 7 x32 bit VM from an old iMac (running 10.6.8) to a new late 2013 iMac w/ 32GB RAM / OSX 10.9.1. Now the bad news - ...
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1answer
768 views

Mavericks Using Up All Available Memory

I upgraded to Mac OS X Mavericks. I thought that Mavericks was supposed to use memory more efficiently. It appears that the OS has memory allocation problems. My computer is using up 99.99% of my ...
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1answer
45 views

Replacing my RAM / New memory sticks

I bought some new Memory Sticks and i want to know on which part they go on. I have a image too. Can someone help me out? This is my Old Mac i used to use and now i bought a Snow leopard installation ...
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133 views

How to prevent PressAndHold from loading?

I have already disabled PressAndHold through terminal, but I see that it still appears as a process on Activity Monitor. It is taking 2.9 MB for me, but I want it to stop and not to begin at all. When ...
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3answers
8k views

High memory usage, macbook pro retina feeling sluggish

My Macbook Pro Retina seems to be feeling sluggish and I don't think it should at all. I'm running: photoshop, 1080p movie on VLC plugged into a Thunderbolt Display. Looking at the activity monitor ...
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1answer
2k views

Purge command - Unable to purge disk buffers, error #-2?

When I attempt to run the purge command, I get the same error every time. [ERROR] <CPDevice.c:3816> Unable to create new counter client. [ERROR] <CPOSX.c:1172> Unable to get user ...
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1answer
242 views

16 GB Crucial RAM For MacBook Pro

I'm looking to upgrade my MacBook Pro to 16GB of RAM. I'm considering: Crucial 16GB (2 x 8GB) DDR3 1333MHz PC3-10600 204pin SODIMM CL9 Mac The specs match what my MacBook wants from RAM but it ...
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1answer
6k views

Can I use DDR3 1600MHz RAM in a Mac instead of 1067MHz?

I'm trying to get a 16 GB (2x of 8 GB) RAM to boost my computer, even though Apple says that it's only 8 GB on macs, but we know Apple is wrong on that. However, when I searched the online shopping ...