0
votes
1answer
22 views

imac mid 2011 ram installation issues

I just received 2x 4gb corsair 204 pin pc3-10600 ram sticks for my iMac 27" mid 2011. I put them in and turned it on and received 3 short beeps, a pause, and repeat, which I think is the ram integrity ...
0
votes
2answers
199 views

Why is my late 2013 iMac so slow?

For the last three months I have been more or less enjoying my new late 2013 21" iMac. I already have an early 2011 MBP, which is pretty maxed out with a 512GB SSD and 8 GB of RAM, and still feels ...
0
votes
1answer
27 views

Can this RAM work with iMac 2010?

http://www.amazon.com/Transcend-Information-Ddr3-So-dimm-jm1333ksn-2g/dp/B007I5CMGK It said it is a 2gb Ddr3 1333 So-dimm, is iMac support all Ddr3 1333 So-dimm?
1
vote
2answers
97 views

iMac (mid-2010) RAM upgrade issue

I recently upgraded an iMac to 16 GB of RAM using 1600 MHz clock speed sticks. It worked fine, but I came to find I was supposed to install 1333 MHz sticks instead. So I tried switching the current ...
3
votes
5answers
3k 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 ...
2
votes
2answers
110 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 ...
1
vote
1answer
596 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 ...
1
vote
1answer
200 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 ...
2
votes
1answer
125 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 ...
2
votes
1answer
37 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 → ...
1
vote
1answer
30 views

iMac mid 2011 RAM upgrade compatability

Is this RAM going to be compatible with a mid 2011 iMac 21.5"?
0
votes
0answers
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?
5
votes
1answer
2k 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?
4
votes
4answers
596 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, ...
0
votes
1answer
86 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 ...
0
votes
1answer
116 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 ...
1
vote
1answer
270 views

RAM - Can this configuration support dual channel?

I'd like to upgrade my 27" late 2013 iMac. The current 8GB is a bit too little for me, and upgrading all the way to 32GB is a bit too expensive for me at the moment. For the time being, I'd like to ...
0
votes
2answers
169 views

ram upgrade works in safe mode but not in normal mode

I have new installed 8 gb ram in to my 2010 imac i3. It kernel panic when booted, but worked when I start it in safe mode. It also shows as 12 GB ram. ( 4 Gb original and 8 gb new. ) How can I ...
3
votes
2answers
1k views

iMac ram memory installing 16GB vs 20GB

I have a mid-2011 27" iMac with i7 processor. It came with 4 gigs of ram (2x2GB). I just bought 2x8GB of matched memory. I am wondering two things 1. is it good/bad/neutral to leave in the ...
1
vote
1answer
521 views

How to delete files on iMac with no menus — Your startup disk is full

I have an iMac with the 10.4 OSX operating system installed. When I boot the computer it prompts me with this message: "Your startup disk is full. You need to make more space available on your disk ...
1
vote
1answer
781 views

RAM upgrade – iMac Mid 2011

I’ve got an iMac Mid 2011 with 4GB RAM preinstalled (2 x 2GB) and want to upgrade to 12GB. Is it ok to add a single 8GB RAM or is it better to add 2 x 4GB?
0
votes
4answers
264 views

Complete Specs for Mid-2010 iMac & Early-2011 MacBook Pro?

OK, so here I am. I've searched anywhere I could but definitely couldn't find what I was looking for. I'm thinking of performing some sort of upgrade (e.g. SSD or memory or CPU) and I'm trying to ...
1
vote
1answer
380 views

Memory for iMac12.1 (mid-2011)

I've found here that imac12.1 (mid-2011) unofficially will support 32 GB of RAM. Questions: Can I mix 2x2 GB with 2x8 GB of memory to get 20 GB of RAM? Will this model work with imac12.1? Thank ...
0
votes
1answer
596 views

Will this RAM work for me? (Late 2009 iMac)

I have a 27-inch iMac late 2009 desktop computer and i'm looking to upgrade my ram. The best RAM I can find is a Kingston 2GB, DDR3-1066, PC3-8500, CL7, DIMM. What I currently have is 4GB 1067 MHz ...
1
vote
2answers
1k views

iMac 2012 RAM upgrade with mixed voltages

Variation of already asked question: I now understand that I can add two matched 8 GB sticks of RAM into the two empty slots, even though the other two slots are filled with two 4 GB modules. But is ...
3
votes
1answer
1k views

Are all four SO-DIMM slots user-accessible in the 27 inch iMac (Late 2012)?

I'm going to buy a new 27" iMac, but I think that the RAM on the Apple Store is really too expensive. My plan is to buy with minimum (2x4GB) RAM and replace everything with 4x8GB. Are all 4 slots ...
2
votes
2answers
3k views

2012 iMac RAM Upgrade

I've just ordered the 27" iMac, which has user-upgradable RAM slots. There are four slots, and the default configuration that ships is two 4GB modules, and two empty spaces. Can I fill the other two ...
1
vote
0answers
112 views

iMac boots with one RAM, but not two

I've got a curious little problem going on over here. I've got an old late 2006 iMac (the white one). Was sportin' 1gb of ram, so I went and bought some more (4gb). Actually I bought two of those, and ...
2
votes
1answer
528 views

Reduce memory usage in OS X Lion

I have a summer-2006 iMac with 2Gb memory. I use it mainly for "mainstream usage" : browse the web (including web-based applications such as Gmail) access a remote server (through screen sharing / ...
0
votes
0answers
80 views

Crashes and hangs after memory DOWNgrade

I recently lost one of my SO-DIMM memory modules on my 20" iMac (2.4GHZ Core 2 Duo alu), and now my iMac is back on 2GB memory from 4GB. Both were ValueSelect (DDR2 667MHz 200-pin) modules from ...
0
votes
1answer
8k views

What are the differences between SDRAM and SO-DIMM RAM, and which should I use for my iMac?

I've started virtualizing Windows 7 on my Mac and I've realized 4GB of ram simply isn't enough for listening to music, surfing the web, virtualizing Windows, and running a compiler all at once. The ...
6
votes
4answers
8k views

Will Early 2009 iMac accept faster-than-spec RAM?

I am looking to upgrade the RAM on my Early 2009 iMac from 4GB to 8GB. According to the memory specifications it accepts PC3-8500 204-pin SO-DIMMs. However, will the iMac accept faster RAM (e.g. ...
2
votes
3answers
14k views

Maximum memory for 2011 iMac

I just bought an iMac and want to max out the memory on the machine. I have received two conflicting answers to my question so I'm bringing it to the community. Can I install 4 8GB memory chips for a ...
5
votes
1answer
1k views

Mixing memory sizes

I'm looking at upgrading the memory in my mid-2011 iMac. Is there any problem with sticking in 2 4GB modules alongside the existing 2GB modules?
0
votes
2answers
599 views

Will this brand of third-party RAM work in my Mid 2010 iMac?

I am looking to update my iMac's Mid 2010 RAM from 4GB to 12GB and wondering if this RAM is alright to use and what is the difference between the two sets of RAM because they are the same price, both ...
3
votes
3answers
9k 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 ...
2
votes
2answers
933 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
1answer
1k 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 ...
1
vote
2answers
294 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
476 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 ...
2
votes
5answers
2k views

Why has my iMac gotten slower for the past few months?

My iMac has gotten slow lately. The (wireless) keyboard lags if I type while a program or dialog box is opening. A couple of Chrome tabs crash every day. A few days ago, Preview and TextEdit started ...
0
votes
1answer
385 views

iMac and MacBook Pro Memory Specifications

i am about to purchase an iMac mid 2011 2.7 i5 that comes with 4 GB of ram preinstalled. I also have an mid 2009 macbook pro 13.3 2.26 computer. I wonder if i can install the 4gb ram of the iMac to ...
4
votes
4answers
18k views

Is it ok to mix 2 GB and 4 GB DIMMS in an iMac (mid 2011)?

I've been told it is important to use matching DIMMs when installing memory to take advantage of the 128 bit throughput. I'm looking to buy a new 27" iMac (mid 2011) which has 4 memory slots. If I put ...
3
votes
1answer
313 views

Buying a new imac, which memory should i get?

For the new imacs that just came out, which memory upgrade should I get? This: http://www.newegg.com/Product/Product.aspx?Item=N82E16820226095 or: ...