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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1answer
606 views

Best 3rd party RAM for MacBook Pros? [closed]

I recently bought a 15" MacBook Pro (Late 2011) with 4GB of RAM. I want to upgrade to 8GB, but I've read that MacBooks can be kind of picky when it comes to RAM and will not operate right if it is ...
3
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5answers
7k views

Why would 2 sticks of 2GB RAM not work together, but work individually in my Macbook?

I have an older Macbook, specifically this model, and when I am upgrading the standard 1GB that it came with. I bought DDR2 667 PNY Memory - 2 X 2GB. According to those specs, my unit can manage 4GB. ...
2
votes
1answer
825 views

Silencing the Memory slot utility

I recently upgraded my Mac Pro with 24Gb of ram, quite the nice feeling. When I booted up the system again, I got this message : Quite nice I thought, seems the memory is working as it should. And ...
11
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3answers
32k views

What exactly does kernel_task do?

I'd just like to know what it is that kernel_task is responsible for. Also, what's an acceptable maximum RAM and CPU use for it?
3
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2answers
829 views

Do Mac Pros use NUMA?

Does Mac OS X make use of NUMA on Mac Pros with two (or more) CPUs?
28
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2answers
13k views

kernel_task using *way* too much memory

I have a 2008 Mac Mini with 4 GB of RAM. Recently (post installation of Lion), it started to behave extremely sluggishly, so I used Activity Monitor to see what was using up the system resources. ...
4
votes
3answers
21k views

How should different sized RAM be added to iMac?

I have a mid-2011 iMac which came with 4GB RAM (2x2GB). I just bought 8 GB (2x4GB) and added it to get a total of 12GB. The current configuration is as follows: Given that the RAM is a different ...
3
votes
2answers
1k views

Which memory upgrade gives a faster Mac Mini?

A friend is upgrading a 2007 Mac Mini with 1GB of RAM. This model can support up to 4GB or RAM installed, but will only use a maximum of 3GB. So, his options are to install 2 x 1GB, 2 x 2GB, or 1 x ...
2
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2answers
137 views

How to decide on a new Hard drive for macbook pro [closed]

I have been using my Macbook Pro for about 5 years, it was the first model with the Intel chip. The 100GB hard drive is starting to go and I'm ready to replace it. I went over to Cnet to see what ...
1
vote
1answer
432 views

Mac mini 2011 memory

I have a Mac mini Mid 2011 2.3 GHz Intel Core i5. I received as a gift an 8GB memory kit. The memory spec for my Mac says it needs PC3-10600 DDR3. The kit I have is PC3-8500 DDR3. In particular, the ...
6
votes
6answers
10k views

Macbook Pro Upgrade - 16GB RAM or 128GB SSD

I am asking myself which constellation is better: should I stock up my RAM up to 16GB (from 8GB), or should I buy a SSD with 128GB?? I really dont know :/ Cheers! BTW: My macbook supports 16GB ...
7
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1answer
4k views

Can I put more than 8GB of Ram in a MacBook Pro 5.1

I have a 5.1 MacBook Pro (5.1 Model Late 2008) with 4GB of Ram. All the apple documentation I can find that the maximum supported for this model is 8GB of RAM (2 x 4GB). Has anyone tried to put bigger ...
2
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2answers
213 views

What do these different terms for system memory in OS X mean? [duplicate]

Possible Duplicate: What does it mean if I have lots of “Inactive” memory at the end of a work day? I just bought a MacBook Pro (I've been a Windows user before this), and I ...
2
votes
2answers
908 views

OS X Lion: 8GB of RAM, 20MB free

I have a Macbook Pro (early 2011) running OS X Lion and while running a few apps that only take up, say, 200 MBs of space each (Xcode, Spotify, and Photoshop), my wired memory shoots up to 1.4GB, my ...
31
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4answers
2k views

Is there a real benefit to removing applications from the iOS multitasking bar?

Sometimes, if my iOS device (ipad or ipod touch) is acting sketchy or slow, I will bring up the multitasking bar (double-press the home button) and then remove items from that multitasking bar (do a ...
1
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2answers
464 views

Trouble with Memtest86 4.0a on 15" MacBook Pro

I have a 15" MacBook Pro late 2011 (MacBookPro8,2) It has a 2.4Ghz Core i7 CPU and 4GB of stock RAM. I'm trying to run Memtest86 4.0a from boot (Memtest86+ does not work.) After about 5 seconds into ...
3
votes
2answers
800 views

Why is my memory still inactive after purging?

I'm trying to understand how memory is allocated on my machine. I have read, and believe I understand, these posts and associated links: Trouble Understanding Inactive Memory in MacOSX, Inactive ...
0
votes
1answer
406 views

Upgrade a MBP(8,1) dual i7 to 16GB RAM from 4GB or to a SSD?

I currently find my new computer a bit slow when it comes to my number crunching requirements. Also, I find my computer painfully slow when it's running VirtualBox. My budget is around $500. Newegg ...
1
vote
1answer
503 views

RAM intermittently not recognized

My MBP will sometimes drop 4 of the 8G of RAM I have after recovering from sleep or a reboot. One (or more) restarts later I'll have all 8G again. Is this a memory stick going bad? Could it be ...
0
votes
1answer
345 views

How can I retrieve files cached in the RAM?

there are some applications that don't write cache files on the disk, instead they write into the RAM directly and thus you can't back it up, analyse it or do anything with it. How can I retrieve ...
1
vote
1answer
12k views

Why is the memory usage on my iPhone being reported incorrectly by iTunes?

I'm puzzled by what iTunes is reporting about my iPhone's memory usage: Clearly this doesn't quite add up, and it's hard to manage my memory use without having an accurate summary of what's really ...
6
votes
6answers
18k views

How can I increase command line memory_limit for PHP with MAMP PRO?

I've edited every single php.ini on my Mac (at least all the ones found by "locate") and still can't seem to increase the memory_limit directive for PHP. I'm using MAMP PRO and running PHP scripts in ...
33
votes
7answers
27k views

What is wired memory?

I'm trying to figure out what is using all of the memory in my Macbook Pro running OS X Lion. I have 8 GB of memory total. When I quit all active programs except Finder and Activity Monitor, then run ...
2
votes
1answer
2k views

Why is my inactive memory not getting free? [duplicate]

When my MacBook Pro (13" 2010, Intel C2D 2.4 GHz, 4GB RAM 1067 MHz DDR3, running Snow Leopard) runs out of free memory, instead of releasing inactive memory (which is mostly about 500 - 1000 MB), it ...
0
votes
2answers
970 views

Finder is using over 100% of CPU and makes entire system slow

Every since upgrading to Lion my system has started to slow down, big time. I realized that the Finder was using over 100% of the CPU, even when I am really not doing anything with it. I restart it, ...
2
votes
2answers
2k views

Is there a difference between the “configurable” and installable memory limit?

On Apple's iMac page, it says: Configurable to 8GB (all models) or 16GB (select models) However both Apple's iMac: How to remove or install memory page and Crucial.com indicate that all of the ...
2
votes
3answers
3k views

How can I identify the chipset of an (old) MacBook?

I am not a mac person, but I am trying to buy a used MacBook for XCode purposes and I want to figure out how much RAM it can take. However, I am having trouble identifying the chipset in the MacBook. ...
1
vote
3answers
520 views

MacBook detects a 4GB DIMM as a 1GB DIMM?

I upgraded the memory on my MacBook (unibody, Core 2 Duo 2GHz). I followed the instructions here and bought a single 4GB DDR3-1066MHz SODIMM. After installing it, the MacBook only detects 1GB: ...
13
votes
2answers
6k views

What does FreeMemory actually do?

There's a highly-rated app on the Mac App Store called FreeMemory. It claims to be able to "increase your free memory with a simple click." Although it's free right now, I believe it normally goes ...
2
votes
1answer
1k views

MacMini crashing after changing memory?

After I bought a new MacBook Pro 2011 with 4 GB or RAM at 1333 MHz I decided to switch the RAM with the one from the old MacMini 8 Gb at 1066 MHz. Initially I was expecting to have problems with the ...
1
vote
1answer
2k views

Is it possible to upgrade my MacBook Pro RAM and Hard Drive?

I bought Macbook Pro 15 inch laptop last year with 4 GB RAM and 300 GB Hard disk, Now I feel like upgrading its RAM to 8 GB and 1 TB hard disk. I want to know is it possible to do that or not. My ...
0
votes
1answer
217 views

What's the best memory upgrade option for a mid2007 macbook running 10.6? [duplicate]

Possible Duplicate: Can an 2009 iMac have an odd total amount of RAM? Yeah, I'm still trying to kick it old school. I have a Macbook 2.1 (2.16 Ghz Intel Core 2 Duo, 1 GB of Memory, 667 MHz ...
2
votes
1answer
2k views

Why some RAM for the iMac 27 inch is 1.5V and some are 1.35V?

I just got a new iMac 27 inch, and from http://support.apple.com/kb/ht1423#1 http://www.crucial.com/store/mpartspecs.aspx?mtbpoid=746859E0A5CA7304 if I buy those 8GB, then I can add them to the ...
3
votes
6answers
34k views

How can I test if my hard drive is going bad?

I've looked over similar questions and searched the internet to try to find symptoms of a bad hard drive, but I haven't found anything that seems to be related to my problem. I have a late 2008 15" ...
0
votes
1answer
167 views

Request for experience: when has having only 16GB on your iPhone inconvenienced you?

Today I regretted having only 2 GB on my Shuffle, because it meant I could not store the three most recent episodes of my favorite podcasts; but so far I have never used the full 16 GB on my 2nd ...
1
vote
2answers
377 views

Can an 2009 iMac have an odd total amount of RAM?

I have an iMac 20-inch early 2009 model. There is 2 GB of RAM (2 x 1 GB sticks). Can I upgrade the amount of memory to 3 GB, replacing just one of the two RAM sticks?
0
votes
1answer
618 views

How much RAM can a 2007 iMac hold?

The box says I can add up to 3 GB (for a total of 4GB), but is this restriction hardware based, or because of the operating system? If I upgrade to OS X 10.6 or higher, can I increase the RAM to 8 GB ...
1
vote
1answer
2k views

How can I diagnose hardware issues on my MacBook Pro 13" (mid 2010)?

I have hit some evil kind of problem with my MacBook Pro 13" (mid 2010). The backstory is as follow: I bought the MBP in January. Felt 4 GB of RAM memory wasn't enough, so in June, I upgraded to 8 ...
4
votes
2answers
1k views

What should I do with my original RAM after an upgrade?

I just upgraded my 13" MacBook Pro (mid-2009) from 2 GB of memory to 8 GB of RAM. What a difference! I'm wondering what I can/should do with the old sticks.
-1
votes
2answers
5k views

Technical reason that 2011 MacBook Air is maxed at 4gb ram

I am very interested in the MacBook Air specs and form factor. Both for reasons specific to my software needs (developing using an IDE as well as needing to run a virtual OS on top of the boot OS.) as ...
1
vote
0answers
317 views

memtester hangs in single user mode

Trying to test as much of my 8 GB of RAM as possible with memtester, I encountered a hangup in single user mode, but not when running memtester on my admin user account. vm_stat is used to calculate ...
8
votes
3answers
953 views

Why is my RAM nearly fully used?

I bought a Macbook Pro 15 inches 3 months ago. It's running on Mac OS X Snow Leopard and it has 4GB of RAM. I consider having a fair use of this computer : - surfing (Chrome) - developing (Fraise) - ...
3
votes
1answer
207 views

Is having 2 GB of memory not enough with the new Mac Mini?

I have the new Mac Mini with Mac OS X, with a 2.3 GHz Intel Core i5, with 2 GB of DDR3 memory at 1333 MHz, and a graphic card (Intel HD Graphics 3000 288 MB) that uses shared memory; the screen I am ...
1
vote
1answer
607 views

What is the best make of RAM I can get for a MBP Mid 2010? [closed]

I have a MacBookPro bought in October 2010, and is the Mid 2010 model. The mac has suddenly started running pretty slowly as I have been using Xcode and Photoshop excessively. So, due to your previous ...
4
votes
2answers
991 views

Lots of inactive memory after watching HD/DVD movies

I'm the owner of mid 2010 iMac (core i7) with 16GB memory installed.Normally, Mac OS X (SL and Lion) never uses swap (that is page ins/outs = 0), there are always 3-8GB of free memory. But after ...
1
vote
1answer
170 views

Mac mini memory module

are Mac mini (2.53GHz so called "late-2009" model) memory modules any different than ddr3 so-dimm modules I would buy for my pc laptop? I'm a little confused here. Should I buy modules especially ...
3
votes
2answers
3k views

How to determine how much RAM I can put in my Mac Pro

I have a Mac Pro 4,1 (Dual 2.66Ghz, 6GB Ram). I want to increase the RAM, possibly adding 8GB to my existing 6GB. The RAM slots are used as follows: SLOT1: 1GB SLOT2: 1GB SLOT3: 1GB SLOT4: OPEN ...
4
votes
4answers
6k views

How do I check my Mac's RAM?

I know there is MemTest86+ for PCs, but what can I use to see if my RAM is actually good in an Apple product? Whether it's a MacBook, MacBook Pro, iMac or Mac Pro? What symptoms would show that RAM is ...
4
votes
1answer
102 views

Upgrading RAM/HDD in latest MBP [closed]

I planning to buy a 13 inch MBP this month. Is it a good idea to stick to the standard 4GB of ram and 500GB harddrive, and upgrade it myself to 8GB/1TB? This would save me about $350. I have ...
3
votes
1answer
2k views

How to make some space on iPad?

Is there a way to delete music, podcast or iTunes-U to make some space available (to take more pictures for instance) without a computer ?