24" Intel iMac 3 Gig memory upgrade

I currenlty have (2) 1 gig memory modules in my two slots for a total of 2 Gig. I want to upgrade to 3 Gig. When my 2 gig module arrives, I know I need to remove one of the (1) gig modules to make room. Does it matter which slot I use for the new 2 gig card, top or bottom?
Thanks
24" iMac, "17 iMac, Mac Pro Dual-Core Tower Mac OS X (10.4.8)

You have posted in the iPod Nano forums. You will probably find more help in the Mac forums.
http://discussions.apple.com/forum.jspa?forumID=1112

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Can I Use DDR3 RAM for iMac 7,1 Memory Upgrade?

I'm sorry if this is a silly quesyion but I cannot find an answer anywhere so I thought I would ask here. My iMac (mid 2007) has the following specs:
Model Name:          iMac
Model Identifier:          iMac7,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.4 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          4 MB
Memory:          1 GB
Bus Speed:          800 MHz
Boot ROM Version:          IM71.007A.B03
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Cheers for any advice.
TJ

You will not be able to use the ram you ordered. You need to return it and purchase ram that is
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This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve your problem.
If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
Below are instructions to run a UNIX shell script, a type of program. All it does is to gather information about the state of your computer. That information goes nowhere unless you choose to share it on this page. However, you should be cautious about running a program at the instance of a stranger on a public message board. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them.
Here's a summary of what you need to do: Copy a line of text from this web page into the window of another application. Wait about a minute. Then paste some other text, which will have been copied automatically, back into a reply on this page. The sequence is: copy, paste, wait, paste again. Details follow.
You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in your browser, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.
Triple-click anywhere in the line of text below on this page to select it:
clear; Fb='%s\n\t(%s)\n'; Fm='\n%s:\n\n%s\n'; Fs='\n%s: %s\n'; Fu='user %s%%, system %s%%'; PB="/usr/libexec/PlistBuddy -c Print"; A () { [[ a -eq 0 ]]; }; R () { o=; [[ r -eq 0 ]]; }; Pm () { [[ "$o" ]] && o=`sed 's/^ */ /' <<< "$o"` && printf "$Fm" "$1" "$o"; }; Pc () { o=`egrep -v '^[[:blank:]]*($|#)' "$2"`; Pm "$1"; }; Pp () { o=`$PB "$2" | awk -F'= ' \/$3'/{print $2}'`; Pm "$1"; }; Ps () { o="${o##+( )}"; [[ ! "$o" =~ ^0?$ ]] && printf "$Fs" "$1" "$o"; }; id | grep -qw '80(admin)'; a=$?; A && sudo true; r=$?; t=`date +%s`; clear; { A || echo $'No admin access\n'; A && ! R && echo $'No root access\n'; system_profiler SPSoftwareDataType | sed '8!d;s/^ *//'; o=`system_profiler SPHardwareDataType | awk '/Mem/{print $2}'`; o=$((o<4?o:0)); Ps "Memory (GB)"; o=`system_profiler SPDiagnosticsDataType | sed '5,6!d'`; [[ "$o" =~ Pass ]] || Pm "POST"; o=`pmset -g therm | sed 's/^.*CP/CP/'`; egrep -q 'No th|pms' <<< "$o" && o=; Pm "Thermal conditions"; o=`pmset -g sysload | grep -v :`; grep -q '= [^GO]' <<< "$o" || o=; Pm "System load advisory"; o=`nvram boot-args | awk '{$1=""; print}'`; Ps "boot-args"; d=(/ ""); D=(System User); for i in 0 1; do o=`cd ${d[$i]}L*/L*/Dia* && ls | grep -v 'ag$' | tail | awk -F_ '{$NF=a[split($NF,a,".")]; print}'`; Pm "${D[$i]} diagnostics"; done; o=`syslog -F bsd -k Sender kernel -k Message CReq 'GPU |hfs: Ru|I/O e|n Cause: -|NVDA\(|pagin|SATA W|ssert|timed? ?o' | tail -n25 | awk '/:/{$4=""; $5=""; print}'`; Pm "Kernel messages"; o=`df -m / | awk 'NR==2 {print $4}'`; o=$((o<5120?o:0)); Ps "Free space (MiB)"; o=$(($(vm_stat | awk '/eo/{sub("\\.",""); print $2}')/256)); o=$((o>=1024?o:0)); Ps "Pageouts (MiB)"; s=( `sar -u 1 10 | sed '$!d'` ); [[ s[4] -lt 85 ]] && o=`printf "$Fu" ${s[1]} ${s[3]}` || o=; Ps "Total CPU usage" && { s=(`ps acrx -o comm,ruid,%cpu | sed '2!d'`); o=${s[2]}%; Ps "CPU usage by process \"$s\" with UID ${s[1]}"; }; s=(`top -R -l1 -n1 -o prt -stats command,uid,prt | sed '$!d'`); s[2]=${s[2]%[+-]}; o=$((s[2]>=25000?s[2]:0)); Ps "Mach ports used by process \"$s\" with UID ${s[1]}"; o=`kextstat -kl | grep -v com\\.apple | cut -c53- | cut -d\< -f1`; Pm "Loaded extrinsic kernel extensions"; R && o=`sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix\.cron)|org\.(amav|apac|calendarse|cups|dove|isc|ntp|post[fg]|x)/{print $3}'`; Pm "Extrinsic system jobs"; o=`launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)|\.[0-9]+$/{print $3}'`; Pm "Extrinsic agents"; o=`find -L {/,}L*/Lau* -type f -exec sh -c 'file -b "$1" | grep -qw XML' {} {} \; -print | while read f; do ID=$($PB\ :Label "$f") || ID="No job label"; printf "$Fb" "$f" "$ID"; done`; Pm "launchd items"; o=`find -L /{S*/,}L*/Star* -type f -exec sh -c 'file -b "$1" | egrep -q "XML|bin|exec"' {} {} \; -print`; Pm "StartupItems"; o=`find -L /S*/L*/E* {/,}L*/{A*d,Compon,Ex,In,Keyb,Mail,P*P,Qu,Scripti,Servi,Spo}* -type d -name Contents -prune | while read d; do ID=$($PB\ :CFBundleIdentifier "$d/Info.plist") || ID="No bundle ID"; egrep -qv "^com\.apple\.[^x]|Accusys|ArcMSR|ATTO|HDPro|HighPoint|driver\.stex|hp-fax|\.hpio|JMicron|microsoft\.MDI|print|SoftRAID" <<< $ID && printf "$Fb" "${d%/Contents}" "$ID"; done`; Pm "Extrinsic loadable bundles"; o=`find -L /u*/{,*/}lib -type f -exec sh -c 'file -b "$1" | grep -qw shared && ! codesign -v "$1"' {} {} \; -print`; Pm "Unsigned shared libraries"; o=`launchctl getenv DYLD_INSERT_LIBRARIES`; Pm "Inserted libraries"; o=`find -L {,/u*/lo*}/e*/periodic -type f -mtime -10d`; Pm "Modified periodic scripts"; o=`scutil --proxy | grep Prox`; Pm "Proxies"; o=`scutil --dns | awk '/r\[0\] /{if ($NF !~ /^1(0|72\.(1[6-9]|2[0-9]|3[0-1])|92\.168)\./) print $NF; exit}'`; Ps "DNS"; R && o=`sudo profiles -P | grep : | wc -l`; Ps "Profiles"; for f in fstab sysctl.conf crontab launchd.conf; do Pc $f /etc/$f; done; Pc "hosts" <(grep -v 'host *$' /etc/hosts); Pc "User launchd" ~/.launchd; R && Pc "Root crontab" <(sudo crontab -l); Pc "User crontab" <(crontab -l); R && o=`sudo defaults read com.apple.loginwindow LoginHook`; Pm "Login hook"; Pp "Global login items" /L*/P*/loginw* Path; Pp "User login items" L*/P*/*loginit* Name; Pp "Safari extensions" L*/Saf*/*/E*.plist Bundle | sed 's/\..*$//;s/-[1-9]$//'; o=`find ~ $TMPDIR.. $ -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 $ | wc -l`; Ps "Restricted user files"; cd; o=`system_profiler SPFontsDataType | egrep "Valid: N|Duplicate: Y" | wc -l`; Ps "Font problems"; o=`find L*/{Con,Pref}* -type f ! -size 0 -name *.plist ! -exec sh -c 'plutil -s "$1" >&-' {} {} \; -print`; Pm "Bad plists"; d=(Desktop L*/Keyc*); n=(20 7); for i in 0 1; do o=`find "${d[$i]}" -type f -maxdepth 1 | wc -l`; o=$((o<=n[$i]?0:o)); Ps "${d[$i]##*/} files"; done; o=$((`date +%s`-t)); Ps "Elapsed time (s)"; } 2>/dev/null | pbcopy; exit 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign ($) or a percent sign (%). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign.
Click anywhere in the Terminal window and paste (command-V). The text you pasted should vanish immediately. If it doesn't, press the return key.
If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important.
If you're not logged in as an administrator, you won't be prompted for your password. The test will still run. It just won't do anything that requires administrator rights.
The test may take up to a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. There wiil be nothing in the Terminal window and no indication of progress until it's done. Wait for the line "[Process completed]" to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report your results. No harm will be done.
When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
When you post the results, you might see the message, "You have included content in your post that is not permitted." That's because the forum software falsely identifies something in the post as a violation of the terms of use. If that happens, please post the results on Pastebin, then post a link here to the page you created.
Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
Copyright © 2014 Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Terms of Use of Apple Support Communities ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

Upgrade Intel iMac's RAM from 3GB to 4GB and change Graphics Card

Hi,
I have 20" Intel iMac (November 2008) and it has 3GB of memory as of now. I would like to upgrade it to 4GB. I need to know if Apple will do this for me at my local Apple Store and how much this will cost. Also, I want to change my video card from ATI to Nvidia. Is this even possible? If so, please give me some details about it. I am more concerned abut the RAM issue.
Thank You!!!

They almost certainly will be willing and able to do that, but you'll have to get an estimate from the store on the cost. To get a ballpark figure, check Apple's website and see what 4GB of DDR2 SO-DIMMs would run you, then add about $100 for labor. Honestly, there's no real point to paying someone to do this. All you do is take a Philips #2 screwdriver to the screw on the little panel at the bottom of the iMac. Once you losen that, the panel comes off, and there are little black plastic flaps that let you pull the RAM out so you can grasp it with your hands. Then you just push the new RAM in until you feel it snap into place, fold the black plastic tabs over it, and put the panel back on. Once you have the RAM, it'll probably be a 5-10 minute job, tops. Just be sure not to do it while the system is on or plugged in. If you do it yourself you can buy DDR2 SO-DIMMs anyone. Apple will charge a hefty premium because they have to cover the costs of potentially having to replace them under warranty.
As for the video card... It's technically possible, but it would be so ridiculously expensive for just swapping the equivalent nVidia card for your ATI one, it would be downright stupid to pay to have it done. So for all practical purposes, it's not possible.

Memory upgrade on iMac G3 700, help with system crashes

I tried to do a memory upgrade on my iMac, so I bought two kingston 256 MB PC133 modules, but none will work, the system starts, but hangs in about two minutes after loading the desktop. I went back to use the older memory module wich is an spectek, but I need the upgrade, any ideas?
Thanks!
FedericoMG.
Ps: Sorry about my english... I'm from Argentina... :-P

Hi Federicomg
The iMac 700 G3 should have been supplied with 1 stick of 256mb ram. However which is the correct type i am not sure as the Apple specifications for this model state PC100 whereas my iMac G3 700 graphite was supplied with 256 MB PC133-333 SDRAM
http://support.apple.com/specs/imac/iMacSummer2001.html
Apple profiler from my iMac this is the original supplied RAM from Apple:-
DIMM0/J13: Size: 256 MB
Type: SDRAM
Speed: PC133-333
1) I would re-instal the original ram and open system profiler to see what type the ram is.
2) Keeping the original stick in place add another stick of the new ram and look again in profiler to see if its recognised and again try the second stick to see if there's a problem with one of the sticks.
I am currently running my iMac with a small upgrade of RAM and the additional RAM is 128MB of PC100 and i have noticed the performance improvement since adding the PC100 so it's working and i have suffered no ill effects doing this..
paul..

Memory upgrade on iMac bought in 12/2007

Hi everybody,
I bought an Imac 3 and 1/2 years ago. I wanted to upgrade it to Mac OsX Lion, but since it has on 1 MB of memory it's impossible as Mac OsX Lion requires at least 2MB. Do you know if it would be possible to add some memory?
Thnk you.
Pierre

Hi Federicomg
The iMac 700 G3 should have been supplied with 1 stick of 256mb ram. However which is the correct type i am not sure as the Apple specifications for this model state PC100 whereas my iMac G3 700 graphite was supplied with 256 MB PC133-333 SDRAM
http://support.apple.com/specs/imac/iMacSummer2001.html
Apple profiler from my iMac this is the original supplied RAM from Apple:-
DIMM0/J13: Size: 256 MB
Type: SDRAM
Speed: PC133-333
1) I would re-instal the original ram and open system profiler to see what type the ram is.
2) Keeping the original stick in place add another stick of the new ram and look again in profiler to see if its recognised and again try the second stick to see if there's a problem with one of the sticks.
I am currently running my iMac with a small upgrade of RAM and the additional RAM is 128MB of PC100 and i have noticed the performance improvement since adding the PC100 so it's working and i have suffered no ill effects doing this..
paul..

Memory upgrade on a early 2008 iMac

Hi, I have a early 2008 24" iMac with 2 GB 800 MHz DDR2 SDRAM.
I have read conflicting information here vs. Apple support site and would just like some advise and possibly answers from someone who has my computer that has done a succesful upgrade. I would obviously like to upgrade as high as I can. Apple says the Max I can have is 4 GB, but I have read that the real size is 6 GB. Which is it?
Also, does anyone know of a specifc Ram that wont break the bank but is still good?
Thanks!

Many people on these forums speak well of the following suppliers.
Can't tell where you come from but ...
In North America contact OWC …        Upgrade Apple iMac Memory
In Europe contact Crucial.com …       RAM Memory Upgrade
Both companies have facilities to guide you and will recommend the correct memory package to meet whatever needs you describe to them.
There may be benefits buying from your own geographical location insofar as Shipping charges, Local sales taxes and Exchange rates. Check out the basic memory costs and do your sums.
Guide to required RAM.    Lookup Mac Specs By Serial Number, Order, Model & EMC Number, Model ID @ EveryMac.com
I think you can use 6GB on that machine.
Message was edited by: seventy one

Intel iMac; upgraded adobe flash; bluetooth keyboard no longer pairs but magic mouse still OK. With Bluetooth switched on the screen splits into 4 areas and open windows seperate and shrink. Switch off Bluetooth and problem disappears and iMac works OK

Intel iMac; upgraded adobe flash; bluetooth keyboard no longer pairs but magic mouse still OK. With Bluetooth switched on the screen splits into 4 areas and open windows seperate and shrink. Switch off Bluetooth and problem disappears and iMac works OK with plug-in keyboard and mouse

Hi, Derek -
...the screen splits into 4 areas and open windows seperate and shrink.
Sounds like Spaces is being activated somehow. With the wired keyboard and mouse in use, select the Exposé & Spaces control pane in System Preferences, click the choice in that pane for Spaces. See what the settings are. There are some activation settings in that pane - by default, F8 activates it.
It could be that the bluetooth keyboard has some stuck keys and is activating Spaces; or that the activation command has somehow been reset to something that the bluetooth mouse, or bluetooth itself, is triggering.

24" Intel iMac 3 Gig memory upgrade

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