IMac Memory slots

I keep getting confused on how many slot there are total, so my question is, how many total memory slots are in the new intel iMac 24"?

flexibility of easily adding more memory in the
future, keep two (sic) memory slots open by selecting
the 1 SO-DIMM (rather than 2x512 SO-DIMMs) option.
Interesting to note, that this statement is only on the 24" model. It is absent from the 17" and 20" which only states:
How much memory is right for you?
Choose the standard 1GB of memory if you'll be photo editing, gaming, creating illustrations or building complex presentations.
The 2GB option is ideal if you plan to use your system regularly for sound design, video editing, DVD authoring, animation and intensive gaming.
Max out your memory with the 3GB option to enjoy the highest performance for everything you do.

Similar Messages

Should all memory slots on my imac have the same amount of memory

should all memory slots on my imac have the same amount of memory

For your model, that would mean to match them horizontally; in newer iMacs with vertical RAM installation, they should be matched: slot 1 + 3, and slots 2 + 4 (which, oddly enough, will result in the same picture if your check the RAM in system info).

Replaced my HDD on iMac (9,1) and screw of memory slot grille is useless. How to replace it?

My original iMac drive was slow & would sometimes not show at all (Some other of my drives would have to be used as Startup Disk) so I decided to replace it. I bought a 4TB HDD from OWC & proceeded with the installation. Couldn't beleive how much dust was in there!
After replacement, when I went to close the bottom grille—the one which gives access to the memory slots—I found the screw had its head slagged & I couldn't make it turn. I need a replacement, but can't find it anywhere.
Anybody?

Tale the grill cover into an Apple repair station. I'm sure they can replace either the cover w/screw or the screw.

Should I buy the imac with expandable memory slot for future os upgrade size?

Should I buy the imac with expandable 8gb memory slot for future os upgrade size?

I Always try to have a little more RAM on my computers that I think I'll need when I purchase them. Either have more ram installed when you order the iMac or purchase one with open slots for upgrading.
I Purchase my iMac 5K with only 8 GB RAM but it had two open slots. As soon as I received the iMac I purchased two 8 GB modules form Other World Computeing. That brought my RAM to 24 GB. I run multiple applications and the iMac runs smoothly.

HT1423 iMac memory upgrade!

I have a 21.5 inch iMac (mid 2011) and according to apples support I can only upgrade to 4x4Gb RAM. I have 2x4 + 2x8 and that works fine?! I need to upgrade to 4x8Gb. What's the deal?

According to MacTracker, your machine has these specs. Note that Apple says only 16 GB supported, but they claim it'll work w/32 GB, so install them and see what happens.
Maximum Memory
32 GB (Actual) 16 GB (Apple)
Memory Slots
4 - 204-pin PC3-10600 (1333 MHz) DDR3 SO-DIMM

Do I have a bad memory slot and what to do about it.

About 3 weeks ago when I came down to my computer, intel imac purchased may 2006, in the morning the screen was black and power button was lit, keyboard did not work and the computer would not wake up from sleep. Rebooted and the power light would come one, no chime or screen power up, and the keyboard would not respond (ie caps lock key would light up). Tried multiple reboots and pulling everything connected out but nothing worked. Next on the torubleshooting list was to remove the ram. With both chips removed, 1gb and 512mb, I would get the flashing powerlight when starting up. I placed back in the 512 chip which is in the slot furthest from the front and the same symptons of just a solid power light with nothing else was exhibited. Removed the chip and placed the 1gb chip back into the slot closest to the front of the computer, everything worked fine. Startup was normal etc. Next, I removed the 1gb chip and put it into the slot towards the back and it would not work, next, moved the 512 chip to the front and all is well. Therefore, I think I have a bad memory slot given the torubleshooting procedures. Is this a correct assumption?
Here are my questions:
1. Are there any software solutions that will tell if the memory slot is indeed bad?
2. Does this sound like a hardware issue or is there an update to the core system that would fix this problem?
3. In order to get this repaired, would I take the imac to the apple store?
4. The computer was purchased in May 2006, if I purchased an applecare protection plan, would that cover the repairs or does it need to be purchased within 90 days of the computer?
Thanks in advance.

I think that sounds like a firmware update gone bad. Apple page I found says: "In the rare case that your computer displays a black screen after start up, you will need to restore your computers firmware back to factory condition before you can apply firmware update."
Dont know, but sounds like it.
http://docs.info.apple.com/article.html?artnum=303364
may be worth a try.

Confusing imac memory install

I'm confused by the description in the apple support notice(http://support.apple.com/kb/HT1423):
"i5 and i7 Quad Core iMac computers come with both top memory slots populated. These computers will not start up if only a single DIMM is installed in any bottom slot; these computers should operate normally with a single DIMM installed in any top slot."
I bought an imac populated with 2- 2gig RAM chips.
But if I want to add just ONE 4 gig chip. The implication is that I cannot put JUST ONE in one of the open bottom slots. So to make sure that I don't have only one chip in the bottom slot, I would need to move one of the 2 gig chips that were pre installed, into a bottom slot to go along with the 4 gig chip I'm adding. This would put a "4" and a "2" in the bottom, and one "2" in the top.
Is this correct??

Maybe I wasn't clear. I don't need instruction about how to put memory in. I've taken two powerbooks, and a mac book pro apart and replace various parts and hard drives as well as putting in memory. That's not the issue.
There are four slots for the memory. My imac has the top two populated with two 2-gig Ram chips. The bottom slots are empty.
The apple support bulletin clearly states that it won't start up if I only put on chip in the two bottom slots. Of course I could buy another 4 gig chip, but not knowing this upfront I did not do so. Since I am now working on my old powerbook 800, as my macbook pro developed the black screen of death, I am chomping at the bit to get back into my new imac when it comes. But clealry from the bulletin, if I just put a 4 gig in the empty slot, it won't start up. So this means I have to move one of the two gig ram chips to the bottom slot. Right?

I have new memory modules, 2x2 2GB DDR2 --800 SO DIMM0 to install in I-Mac early2008 ,currently with 1 GB DDR2 SDRAM. How do I find the memory slots ? I have the 4GB replacement modules from Crucial and general instr's., not specific to I-Mac.

I have new memory modules, 2x2 2GB DDR2 --800 SODIMM MAC to install into I-Mac early2008 ,currently with 1 GB DDR2 SDRAM. How do I find the memory slots ? I have the 4GB replacement modules from Crucial and general instr's., not specific to I-Mac.

https://www.ifixit.com/Guide/iMac+Intel+24-Inch+EMC+2111+RAM+Replacement/5196

Memory slots on Lenovo G560

How many RAM memory slots has G560? I have 3GB of ram, 2 modules,first of 2GB and second 1GB. But when I run CPU-Z program it shows me 2 more free slots for ram. I couldnt find in user manual any information about memory slots and my laptop is under warranty yet so I dont want to open it to check,but I want to know how many slots are really there. Does anybody know?
Solved!
Go to Solution.

standard memory: 2 gb (removable) or 4 gb (removable)
maximum memory: 4 gb using a 32-bit operating system / 8 gb using a 64-bit operating system
expansion: 2 sockets
cpu & chipset: intel core i3 intel hm55
mfgr's system p/n's: 0679-xxx

Powerbook Lower Memory Slot Issue, what are my options?

Hi there,
I have a Powerbook G4 1.5ghz that I purchased in October of 2004. I had no problems with it until after upgrading the RAM to 2 x 512mb chips and then installing Tiger which resulted in me later notcing the missing RAM and learning about the lower memory slot failure issue.
I find that sometimes if I remove the RAM and try and power it up and then replace the RAM again that the lower slot ocassionaly does come back. Trouble is though that the machine will either crash or I loose the other RAM slot when I have to shut it down. It seems to be so intermittent this way and I'm tired of constantly removing the RAM to fiddle about with it.
My serial number begins W8441, so it isn't covered by the returns programe. I would call Apple Support, but I am put off by a £35 charge just to have them discuss and diagnose the problem.
I'm in the UK and as I don't have Applecare and I'm not elgiable for the returns programe can anyone tell me what they charge for a logic board replacment? Looking at what they charge in the US, it's not cheap.
I use my Powebook for Final Cut Pro, DVD Studio Pro, After Effects mainly and I had been alright with 1gig when it was working.
I'm really trying to decide what the best thing to do is....
- Do I pay for the logic board replacement, which I'm not really sure I can afford right now, or to be without my machine... especially as I have read that it can just fail again.
- Should I just buy a 1gig stick for the upper slot and try and sell my old RAM, as that would be cheaper than getting the logic board replaced?
It's a real shame that Apple doesn't seem to want to ackowledge that this effects other users as I'd been so impressed with everything about Apple up until now.
Thanks for any advice.

(Browse down for findings and questions).
The notorious lower-memory-slot-bug has hit my finally too... I never believed it until now (and I've immediately signed the petition).
I am outside warranty and I never bought Applecare either.
Also my powerbook, a very dear machine to me, is a less common type to have this problem: a 1 GHz G4 15" FireWire 800 OS 10.3.9 type. Funny enough my older powerbook ( a G3 Bronze) is still running strong with no problems whatsoever.
My G4 15" also has the "white spots" problem and a dead superdrive... I cannot believe how many hardware problems I'm having with this machine in comparison to all my older macs - even my sluggish powerMac 7200/90 never gave me this many headaches...
Alright, I'll stop complaining for now.
I've been able to browse the internet on this and found the following statements:
The lower memory slot gets "fried" because of a OS 10.3.9 upgrade,
or possibly due to overheating when the powerbook is put on the users' lap,
or possibly due to picking the powerbook up by the corners so the metal gets bent.
+ I have only seen one case where someone's UPPER memory slot was defective.
The solution to this problem (replacing the logic board) didn't seem to be definate in many cases so I'm reluctant to try this myself (and I have very little money). The alternative (replacing the upper slot memory with a bigger type of RAM) seems a bit scary to me,
because I wonder:
-will the upper memory slot RAM get "fried" eventually as well after a while?
-do you need to have something installed in the lower slot or is it possible to just install one RAM card only?
-are there more people with a 1 GHz PB that have this problem? It seems it's mostly people with a 1,67 GHz that have been bitten by this bug and maybe that's why Apple decided to give the majority a free repair. I am not sure whether that is a common policy, I am part of the minority it seems.
As a solutions someone posted on a board that we should all buy KTA-PBG4333/1G RAM, but here in Dutch stores it is said this memory is only compatible with 17" powerbooks....
Does anyone know if it is suitable for 15" as well??
G4 Powerbook Mac OS X (10.3.9) 1 GHz G4 Powerbook FW800

Memory Slot Utility "memory modules are installed in the recommended slots"

I've got two Mac Pros that give me this message. Every time I boot them up the Memory Slot Utility gives me the message that my memory modules are installed in the recommended slots.
This started after I installed an additional 8GB of RAM, bringing them up to 16GB. 8x2GB sticks.
I checked the login items and it's not there, so what else could I be missing?

I have this problem too on a Mac Pro Quad Early 2009.
Has 2x4GB + 2x1GB Runs fine with 10GB, but everytime I log in the memory utility pops up as if I have a problem.
How do I stop it annoying me?

Memory slots in PowerBook G4

I have a PowerBook G4 15" 1.25 GHz purchased almost three years ago. Mac OS running is 10.4.8. The Powerbook comes with 256MB RAM. Today I decided to install 1GB. When I opened the compartment on the bottom of the computer, I noticed both upper and lower slots populated with a 256MB memory module in each slot. The last time I checked 256 + 256 = 512MB. System Profiler keeps reporting 256MB both under the Hardware and Memory categories. While both slots are filled, System Profiler keeps reporting the lower slot EMPTY.
It turns out that the 1GB module I got must be defective because no matter which slot I put it in, my Mac won't recognize it or my Mac won't turn on. That a small area of gold has been rubbed off the underside of the pins of my 1GB module may indicate that the module is defective.
Upgrade aside, why isn't my Mac reporting 512MB with both 256MB modules in each slot?
Thanks.

Hi
You may want to repost in the PowerBook forum as you may get better help.
However, lower memory slot failure doesn't seem to be uncommon in some of the Aluminium PowerBooks. Apple offered a repair program although it didn't seem to cover the 1.25GHz model:
http://docs.info.apple.com/article.html?artnum=303173
The following link contains some more info:
http://en.wikipedia.org/wiki/PowerBook_G4
It mentions the following:
Presently, Apple has started a Repair Extension Program for PowerBooks affected by the issue, for up to 2 years from the original date of purchase, even if the computer is out of warranty. However this repair program does not include the G4 PowerBook 1.25 Ghz model, which are affected by the same problem.
Hopefully someone in the PowerBook forum will be able to offer some more advice. It could be a different problem entirely though I guess. Have you tried swapping the 256MB DIMMs over just to make sure the problem is with the slot itself?

MS-7003 Memory slots

Fresh post on this problem:
My MS-7003 mobo had just come back from being RMAed
The problem i had at first was that i kept getting bsod errors when my 256mb micron memory was plugged into slot 2 on my mobo. so i ran MemTest86 V3.2 and got errors on test 5. The memory is fine when tested in slot 1.
I still have this problem with slot 2 even after RMA. Only now i get errors in test 5 & 8
Is this just a problem with not having any memory in slot 1? I only have one stick of 256 so i cannot test without buying more ram (which i can't afford atm) But in my mind the ram should work on it's own in either slot anyway!
Or is slot 2 still duff? The mobo ram and cpu came as a bundle so should be compatible.
My concern is when i come to use both memory slots at the same time. i.e i upgrade with another 256 ram will the memory in slot 2 cause errors?
All help appreciated.

Hi Harib0,
I'm running the MS-7003 mobo in my media centre PC.
Stumbled across your post while looking for BIOS flashes for the board, and thought I'd do some testing.
Have been running a P4 1.8A (512K Northwood) and 256MB micron DDR333 (2.5-3-3-8) in slot 1. Onboard graphics and sound and is running fine for me.
Tried running memtest-86 with this module in slot1 and slot2, no errors.
Tried 2 x 256MB Corsair VS DDR400 (3-3-4-8), slot1 and slot2 individually and both together, no errors.
Tried 2 x 512MB Corsair VS DDR400 (3-3-4-8), slot1 and slot2 individually and both together, no errors.
Tried 2 x 512MB Crucial (micron) Ballistix DDR400 (2-2-2-6), slot1 and slot2 individually and both together, no errors.
So the memory works fine on my board. Got my board from an OEM source as well it has BIOS version 1.0b31 which I assume is a beta BIOS. If you are using a different BIOS I'd really appreciate it if you could save it and send it to me before you RMA the board. If you install msi's live update 3 you can do this in windows with the following utility:
C:\Program Files\MSI\Live Update 3\FlashUty\Award\WinFlash.exe
I think you could be having one of 2 problems.
1. Bad BIOS that needs updating, although the update may not be available. I can check your BIOS on my system if you send it to me and perhaps my BIOS will resolve your problem.
2. Motherboard does not support your CPU. Again a BIOS update could solve this one but I wouldn't hold your breath for MSI to release one. This is an interesting link where MSI clearly state that "Pentium 4 Prescott (Celeron) - 2.8G - 533 - 21 - NO" does not work. MSI seem to be using a BIOS v1.1 and a lot of the Prescott CPU's seem to be incompatible.
http://www.msi.com.tw/program/products/mainboard/mbd/pro_mbd_cpu_support_detail.php?UID=537&kind=1
I’ve got a P4 3.0 I could test in the board but it’s a 512K 800FSB Northwood so I doubt there will be any problems. MSI’s site says the board works fine with 3.0 Northwood’s and Prescott’s.
Hope this is of some help and you get to keep the board cos the 9100 IGP is the best integrated graphics you can get.

Lower memory slot doens't like me anymore!

I have a Powerbook 1.25mhz that had 768mb of RAM (1-512mb + 1-256mb). With Aperture, you need at least 1GB so I ordered another 512mb to replace the 256mb module. After installing the new 512mb, my system would lock up hard after booting to the desktop. Tried the memory in both slots, alone and with the other module. No dice...locked everytime. So, I removed the new 512mb and sent it back for a replacement. Meanwhile I put the 512mb and 256mb back in and everything was fine. Get the replacement 512mb module back and installed it. No lockups...but now the Powerbook only sees 512mb total, not 1gb. It's showing only the top slot has memory installed...here we go! Remove the memory from the lower slot and reinstall the 256mb and everything is fine but I'm only at 768mb. Remove the 256mb from the lower slot and reinstalled a 512mb module. No dice again...only have 512mb with the lower slot showing empty. Put the 256mb back in and now it's not working either. I have two 512mb modules and the 256mb module. No matter what I try now, the lower slot is dead. Any thoughts?
If the slot is bad, I've heard it requires a motherboard replacement which might cost up to $800. If it does take that to get it fixed, I'm on the fence. Should I get it replaced or just wait another two or three months and hopefully go with one of the Intel based Powerbooks that everyone is expecting? I don't want to buy a current Powerbook and then a year from now, have no software to run on it...
A

I'm starting to get a little nervous about this memory slot/logic board issue.
I'd like to upgrade the memory in my 1.25GHz Powerbook, but I'm worried that I will get a logic board failure if I try to upgrade the lower slot. Is this an issue with all Powerbooks, or just the newer ones?
I'm confused, as some say their problem started when upgrading to 10.4.3, some say it's an issue when changing RAM in the lower slot on the "new" Powerbooks, and now Al says it's happened on his 1.25GHz machine?
I have had no problems with my factory installed RAM, and I really wasn't thinking of messing with the lower slot, just putting more in the upper slot, but since I have around 5 months left on my warranty, I was wondering if I should try putting new RAM in the lower slot, to see what happens.
I would hate to leave it, until after my warranty runs out, then find I need more RAM, and then have this dreaded "lower slot failure".
I don't really need the hassle, but if my lower slot is going to fail when upgrading memory, then I need to know while I'm still covered. It seems to be a major fault, that needs to be addressed by Apple, it shouldn't need people to have to take legal action to sort out! I've heard of one guy having FOUR separate logic boards fitted, and the problem still hasn't been resolved!
Alum Powerbook G4, 1.25Ghz Mac OS X (10.3.9)

Do memory slots ever go bad?

The mac started hanging on start up and wanted me to restart so I was never able to fully load the OS. I thought maybe it was the hard drive so I put a new hard drive in and then started trying to run the hardware test.
I received lots of errors trying to even get the hardware test to run. I removed all peripherals. I then decided that the hard drive may not be the problem, but maybe it is the memory that is the problem. I removed one of the memory modules, and after several tries was able to get the hardware test to run. It stopped after noting there was a problem with the one memory module. (Error Code - 2MEM/1/4: DIMMO/J4000) I put in the second memory module in the place of the original. I received the same error. I then tried both memory modules individually in the second slot.I received an error for the second memory slot. (Error Code - 2MEM/1/4:DIMM1/J4001) I am not sure if it is important to note or note, but I tried this test with the old and new hard drives, and neither had any problems with the hardware test. Also, when trying to run the hardware test with each new configuration, I always had to try several times before I was able to get the hardware test to run as I was receiving crash messages before I was able to get to the actual test.
I am beginning to think that there is a bigger problem than just the memory modules going bad because it seems weird to me that they would both have gone bad at the same time.
Any suggestions on what I should try next or ideas on what the underlying problem might be?

Your memory slots may have gone bad or your memory may have gone bad, try running Rember for a few loops and see what it reports.
The message you received is indeed a kernel panic, try looking at Dr Smoke's Resolving Kernel Panics for solutions.
Message was edited by: MGW

IMac Memory slots

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