Currently Being ModeratedMar 1, 2013 3:34 PM (in response to The Heftster)
Does tthe working 6 GB still work if you swap the modules' slots?
At the Apple Icon at top left>About this Mac, then click on More Info, then click on Hardware> and report this upto but not including the Serial#...
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: 6 GB
Bus Speed: 800 MHz
Boot ROM Version: IM71.007A.B03
SMC Version (system): 1.21f4
Currently Being ModeratedMar 2, 2013 1:50 AM (in response to BDAqua)
Alrightythen I confess I haven't tried reversing the 2 modules of (switching the 4 and 2 modules between slots A/B). I won't have a chance to test until Monday, but I'll let you know.
Currently Being ModeratedMar 2, 2013 12:21 PM (in response to The Heftster)
I'm thinking this might test the slot that it seems so far only work with 2 GB stick.
Currently Being ModeratedMar 2, 2013 12:33 PM (in response to The Heftster)
Corsair ram is me of he cheap bargain basement brands that don't work well with Macs. You said that it worked with one of the 4gb chips alone, why I can't explain. The reason it works with one 4gb and one of the original 2gb chips is because the system is for Inc the 4gb chip to run at the same speed as the 2gb chip. You'd be way ahead to return the Corsair ram and purchase from Crucial.
Currently Being ModeratedMar 4, 2013 5:00 AM (in response to BDAqua)
Switched the 2 modules around, so there's now a 2GB in slot A and a 4 GB in slot B. Still works fine
Model Name: iMac Model Identifier: iMac9,1 Processor Name: Intel Core 2 Duo Processor Speed: 2,93 GHz Number of Processors: 1 Total Number of Cores: 2 L2 Cache: 6 MB Memory: 6 GB Bus Speed: 1,07 GHz Boot ROM Version: IM91.008D.B08 SMC Version (system): 1.45f0
Currently Being ModeratedMar 4, 2013 5:05 AM (in response to Mike Sombrio)
I suppose I could attempt to switch RAM, but to be honest I've used Corsair several times over the past 6 years with no issues. These are specifically labelled "Mac Memory". If I have no luck I'll ask to return the 3 "faulty" modules to Dustin and ask for the more expensive ones - but still... I'm kinda befuddled.
Currently Being ModeratedMar 4, 2013 5:22 AM (in response to The Heftster)
Corsair and other bargin brands aren't manufacturered to the same specs that the better brands sold by Crucial and OWC are. Your Mac requires 1066 MhZ ram and some brands label and sell ram that is actually 1080 MhZ or something other than exactly 1066, but they'll label it as 1066. PC's are way less picky than macs about ram so those brands will work fine in a PC. Like I said before as long as you use one of the original sticks that is exactly 1066 the system will sense that and force the corsair to run at that speed also. There are literally hundreds of threads here about those brands of ram causing problems, almost every one of them is solved by buying ram tested and guarenteed to work with that specific Mac from Crucial or OWC.
Currently Being ModeratedMar 4, 2013 11:25 AM (in response to The Heftster)
Well, my best guess is the Mac is looking for one fully recognizable module & then setting the question one to that, some RAM that may be "compatible", might not have the SPDIF chip programmed correctly, yet still be capable of adjusting.
Currently Being ModeratedMar 5, 2013 1:40 AM (in response to The Heftster)
Allright - I'll contact Dustin and explain the issue, they may accept the "faulty" RAM modules back despite them being taken out of their packaging. I'll give the Crucial modules a spin. Let you know what happens