This discussion is archived
4166 Views 7 Replies Latest reply: Oct 12, 2007 7:49 PM by jlapro
Currently Being ModeratedOct 7, 2007 7:48 PM (in response to Gravity)With the orginal 1GB and a 2GB module installed are you seeing all 3GB in "Apple / About This Mac" and Reading system memory usage in Activity Monitor?
Resetting the PRAM can solve certain startup problems.
Try installing the 2x2GB kit and restart the Mac immediately press Command-option-P-R and hold the keys down until the Mac chimes a second time. This resets the information in the Mac’s parameter RAM (PRAM) to its default values. The PRAM is a special area of RAM where data is retained even after you shut down the Mac.17" iMac Intel Core Duo - 2GB Ram -, Mac OS X (10.4.10), - Maxtor 300GB FireWire - 2G Nano
Currently Being ModeratedOct 7, 2007 8:11 PM (in response to den.thed)Sorry for the double post, but I also got to thinking that maybe some how you got the wrong modules. Double check the spec's of that kit they should be:
667 MHz DDR2 SDRAM
iMac (Mid 2007): Installing or replacing memory17" iMac Intel Core Duo - 2GB Ram -, Mac OS X (10.4.10), - Maxtor 300GB FireWire - 2G Nano
Currently Being ModeratedOct 7, 2007 10:40 PM (in response to den.thed)Yes, I'm seeing 3GB in "Apple/About this Mac." Does that alter the rest of your suggested solution?
I'll try resetting the PRAM tomorrow. The iMac is at my office.
Will I be able to reset the iMac's PRAM if the system doesn't boot at all? I get nothing but a blank unlit screen.
Also, what's odd is neither 2GB stick seems to work in the first slot.
Currently Being ModeratedOct 8, 2007 8:44 AM (in response to den.thed)This is the answer. It seems Crucial was sending out 800 MHz sticks. They have since removed that kit from the site. Crucial was very up front about the mistake and is correcting the order.
Currently Being ModeratedOct 8, 2007 10:54 AM (in response to Gravity)Why wont the 800MHz RAM work? The FSB on the new iMacs are 800.
Sound silly to me that you have a faster FSB but bottleneck at the RAM.
Perhaps the new OSX will allow the iMac to use the full 800.2.4GHz Intel Core 2 Duo, Mac OS X (10.4.10), Aluminum iMac 20"
Currently Being ModeratedOct 12, 2007 7:49 PM (in response to Gravity)I bought a 2g ram module from OWC and it was not recognized in my recently purchased 2.4ghz 20" imac. I returned the first one and the second they sent me has the same problem. I don't believe it's how I'm installing it - I've moved the OEM 1g module from one slot to the other and that continues to show up. If I try to boot up with just the 2g module I just get a beep. OWC says there may be something wrong with the memory controller and suggests I get it checked at the Apple store.G4 quicksilver, Mac OS X (10.4.3)