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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iMac mid 2011 RAM upgrade compatability

Is this RAM going to be compatible with a mid 2011 iMac 21.5"?
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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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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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979 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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2answers
233 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
99 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
1k 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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5k 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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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
911 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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52 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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176 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
10k 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
298 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
8k 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 ...
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1k views

Why does OSX use 6GB of RAM after restart?

Just had OS X crash on me because of swap pressure. I have 2012 rMBP running the latest version of Mavericks (10.9.1), and it only has 8GB of RAM. Since reboot, OS X now consumes 6GB, which leaves ...
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3k views

How can I check to see if my Mac is running in dual channel mode?

I've just upgraded my iMac's memory with a new 2x8GB kit: Although I know this "should" be dual channel (as both banks have the same amount of RAM), I'd like to know for sure. How can I check?
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4answers
795 views

iMac slow and unresponsive after Mavericks

There have been a few questions and answers about memory usage, whether one should pay attention to the Activity Monitor, that Memory Pressure is more indicative of a system being maxed out on RAM, ...
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2answers
333 views

iPhone 5s: benefits of 64 bit processors if no more than 4 GB of RAM?

My understanding is that the (main) reason of having a 64 bit processor, is to be able to use more than 4 GB of RAM. In PCs, it is now very common to have more than 4GB of ram, and to really be able ...
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2answers
413 views

How to test memory after memory upgrade?

I recently upgraded my macbook from 4G to 8G and wonder if there's a tool to test the quality of new memory. I found memtest 4.22 seems only test about 1G: $ memtest all 2 Memtest version 4.22 ...
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3answers
706 views

Poor battery performance on MacBook Pro [duplicate]

I have recently bought a very expensive new MacBook Pro with 8 GB memory and now I am frustrated by its very fast battery drainage. Often I see only 2 hours left on full battery charge! Right now it ...
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205 views

Impossibly low RAM

I remember the times when I got my macbook pro with 4GB of RAM: I could launch Firefox, VirtualBox and Firefox inside a VirtualBox and it worked reasonably well. Two years later, when I start the ...
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1answer
107 views

iMac 2009 works slow

iMac (model 2009, purchased in late 2012) sometimes becomes extremely slow. I've opened the "System monitor" and discovered that there is a huge lack of RAM. But as you can see there is no app ...
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853 views

Does my Macbook need “special” RAM?

I want to upgrade the RAM on my Macbook Pro 4,1 A1260 (Early 2008). Can I just use any RAM of the compatible "type", or does it need special magic RAM because it's a Macbook? Also, is there any ...
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747 views

Does use of memory with timing CL=10 instead of Apple used CL=11 slow my Mac down?

After reading Why is 8GB, Ballistix 204-pin SODIMM, DDR3 PC3-12800 memory module showing as not compatible with Macbook Pro mid 2012? on the Crucial forum, and the response from Crucial: use our ...
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2answers
293 views

OS X using lots of memory for no apparent reason

I have about 2 GB or more memory that I don't know what its used for. When I restart my computer with no applications running, the used memory is 4 GB, and when I open browsers its over 7 GB used from ...
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533 views

On OS X Mavericks, why does it always say my memory used is like 99% of my total memory?

I keep getting these results from Activity Monitor in Mavericks, where it seems like 99% of my memory is being used (where in the screenshot I have 10MB left). Am I just reading this wrong? How am I ...
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984 views

How do I get my iPad to show up under DEVICES in iTunes 11.1.3?

I've been having problems seeing my iPad (and my iPhone, haven't tried my iPod) under the DEVICES section on the left (where the STORE, GENIUS, PLAYLISTS, LIBRARY are located) in iTunes 11.1.3. It ...
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271 views

Memory runs out issue with a Mac Air 11.6", Mac OSX 10.9

I use word 2010 a lot, with medium length documents (10-20pages) It sometimes takes 2 gigs of RAM just for word. Why is that? none of the files themselves are over 50mb. The Mac then freezes or ...
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211 views

Alternatives to purge command

I read in a different thread (How can I use automator to run "purge" command in Mavericks?) that using the purge command in Terminal to free memory is not a good idea. Does anyone know an ...
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139 views

How much RAM do you have available after you restart your Mac and do not have any running applications? [closed]

I am trying to figure out the issues of my Mac's performance. I currently have 2.75 GB / 4 GB RAM available after I restart my laptop and do not have any running apps at all. I'm currently running ...
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1answer
490 views

Huge memory leak in Mountain Lion

I recently bought a MacBook Pro Intel Core i7 with 8GB DDR3. By monitoring with htop I notice that my RAM usage sometimes goes up to 7GB, with only Google Chrome, a few iTerms a text editor and app ...
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2k views

Memory terminology in Mavericks Activity Monitory

In Mavericks, the Activity Monitor has changed its memory terminology. The columns available when viewing processes in the memory tab now include "Memory", "Real Memory", "Real Private Memory", "Real ...
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885 views

Restore the RAM pie chart dock icon which was removed in Mavericks? [duplicate]

I configured Activity Monitor like this on all of my machines. I also set up my non-techie friends' Macs this way as well: It was the best "health snapshot" for the Mac I'd figured out, and not ...
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2answers
10k views

com.apple.iconServicesAgent using a lot of RAM in 10.9

I performed a fresh install of OS X 10.9 and now the process com.apple.iconServicesAgent is using >300MB of RAM, that is quite a lot. This process is using the second most amount of memory of all ...
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3answers
22k views

What scale or measure does Mavericks' and Yosemite's “memory pressure” adhere to?

Mavericks' (and also Yosemite's) Activity Monitor shows a new diagram, the memory pressure. Sadly, its help text only vaguely explains what exactly it measures. How is memory pressure calculated? ...
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Can I purchase regular DDR3 RAM for my MAC (not from an iMac store?)

I know that buying and installing RAM from a regular computer shop will be cheaper for me. I was just wondering if a Macbook Pro 17" early 2011 model uses specific 'Mac' DDR3 RAM or if I can get away ...
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511 views

Safari going nuts in Mavericks - iMac totally unresponsive

Is anybody else experiencing Safari going crazy on Mavericks? I have just unlocked my iMac (Model 2012, 12GB RAM, 2TB HDD, Core i7 3.4GHz) and everything was slow motion. The hard disk was spinning ...
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1answer
402 views

Memory Upgrade: Planning to Use Different RAM Model

I'm considering upgrading to a total of 16GB RAM. Currently, I have 4GB. MacBook Pro: 13-inch, Late 2011 Memory 4 GB 1333 MHz DDR3 The problem: it appears the local resellers no longer have such ...
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4k views

Maverick is sluggish with 2GB of RAM using XCode 5, should I upgrade with 4GB or 8GB?

I have a 13 inch macbook pro from mid 2009 (5,5), it's really slow when I switch application, I'm using google chrome, XCode 5 (I already disabled "show live issues"), and not many other apps: Cog ...
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2answers
560 views

Should I buy all new memory or combine with old?

I tried googling for answers on this, but couldn't actually find any decent information. I have a mid 2010 Macbook Pro, which according to Apple supports up to 8GB of ram. I already have a single 4GB ...
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2answers
6k views

Insanely high kernel RAM usage (over 9GB) in Mavericks

I upgraded to Mavericks yesterday, and everything seemed to go fine, but today I noticed that my computer was becoming a bit slow. I checked Activity Monitor, and CPU / disk were at normal levels so I ...
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3k views

Is integrated VRAM included under `kernel_task` RAM in Activity Monitor?

I was stunned to discover that Mac OS X kernel can consume 750MB of RAM. A few related questions: Is it a problem if kernel_task is routinely above 130MB on mid 2007 white MacBook? kernel_task using ...
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Macbook Pro Late 2011 stuck at 0.8 GHz

I have been experiencing a lot of problems with my Macbook Pro slowing down and crawling through small tasks like getting mail and opening Launchpad. I have 8 GB of 1333 MHz DDR3 memory and a 2.2 GHz ...
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208 views

How much more RAM can I add to my Mid 2007 24" iMac? [duplicate]

I have a "vintage" iMac with the spec below: This is going to sound like a real beginners question but can I up the RAM anymore? At the time, I upped it to as far as I could but could I put say 2 ...
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7answers
61k views

Mavericks unusually high RAM usage

I thought Mavericks was suppose to utilize RAM memory better, thus run smoother. Running ML on Mac mini 2012, with 16GB RAM...always running smoothly even with over a dozen apps running. Now, after ...
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28 views

Memory card on iPhone

I have an sd converter for my iPad but can't find anything like it for my phone? Plan on using it to view shots from a trailcam while in the woods
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2answers
526 views

MacBookPro crashed with pixel disturbed screen and 3beeps

I have MacBook Pro 15-inch, Early 2011 Processor 2 GHz Intel Core i7 Memory 8 GB 1333 MHz DDR3 Once a week it crashed with beep sound ( 3 times ) beep - beep - beep Then pixel in the display ...
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2k views

Mac has become insanely slow : Processes SystemUIServer, UserEventAgent and loginwindow using a lot of memory

I have been using my Mac for for many months without any problem. But recently all of a sudden the Mac became insanely slow. I opened Activity Manager to see what was happening. For three processes ...