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Helpful answers
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Apr 8, 2013 4:48 PM in response to LSowellby The hatter,★HelpfulSome can be mixed. OWC was selling two types of 8's in the past.
I don't know the details of what to ask but MacMemory should ask them first.
When you do get some serious $$ then an SSD scratch or for system on PCIe card - the Sonnet Tempo Pro 6G with room for two SSDs, is one way to do either.
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Apr 8, 2013 5:55 PM in response to The hatterby LSowell,Hi Hatter,
Will contact them and ask then.
I thought the Tempo Pro 6G wouldn't boot OSX? Anyway, I just had to give a bunch of owed tax money to Uncle Sam over the weekend, so serious $$ is a no-go for me. I'm just trying to get by with what I have and hang onto my cash these days. :-(
I just have a pair of Samsung 540Pro SSDs that I write to, those will have to tide me over until I win the lottery or some long-lost relative remembers me in a will or something.
Thanks hatter, appreciate your thoughts and help.
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Apr 8, 2013 8:02 PM in response to LSowellby FatMac>MacPro,LSowell wrote:
...I am wondering if 8's and 4's can be mixed? What do you guys think?To expand on what The hatter said about mixing, with the 8 GB DIMMs, these http://eshop.macsales.com/item/Other%20World%20Computing/1333D3ECC8GB/ can be mixed but these http://eshop.macsales.com/item/OWC/1333D3MPE8GB/ can't. The difference is that the latter is registered (buffered) and is identified by the "R" in ECC-R. However, both are Data Rate = 1333MHz whereas yours is Data Rate = 1066MHz. I can't find the registered equivalent at that speed on OWC's website. Since it sounds like you're considering buying 8 GB DIMMs rather than matching any you already have, go with the non-registered DIMMs with the option to return them if they aren't compatible with what you already have.
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Apr 9, 2013 6:48 AM in response to FatMac>MacProby LSowell,More useful information, thanks so much FatMac. I originally bought the DIMMs at Ramjet, and wrote them about mixing...
Yours and hatter's responses do tell me that different sizes can be mixed, just depends on whether they are buffered or not apparently.
Thanks for your reply, will report back in when I get an answer from them.
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Apr 9, 2013 6:58 AM in response to LSowellby FatMac>MacPro,LSowell wrote:
...Yours and hatter's responses do tell me that different sizes can be mixed, just depends on whether they are buffered or not apparently...If you install different sized DIMMs and where you place them isn't ideal, the Memory Slot Utility should automatically pop up and recommend an improved configuration. That utility is in /System/Library/Core Services. This http://support.apple.com/kb/HT4433 may prove helpful too.
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by Grant Bennet-Alder,Apr 9, 2013 7:54 AM in response to FatMac>MacPro
Grant Bennet-Alder
Apr 9, 2013 7:54 AM
in response to FatMac>MacPro
Level 9 (61,250 points)
DesktopsAt least in 10.6, its saved configuration is stored in /Library/Preferences/com.apple.PCIE.plist
If the preferences of that file are not set correctly, it can be difficult to dismiss the "Modules are installed in the corrrect slots" message from an Admin account.
Permissions of Owner root or <main_Admin_account>; and Group Wheel or Admin are likley correct, but I cannot say with absolute certainty.
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Apr 9, 2013 9:15 AM in response to Grant Bennet-Alderby FatMac>MacPro,Grant Bennet-Alder wrote:
...If the preferences of that file are not set correctly, it can be difficult to dismiss the "Modules are installed in the corrrect slots" message from an Admin account...It is a pain to keep having to dismiss that message and something of a pain to fix it via root if root is not commonly used. Fortunately, I have to enable root in a Mac OS virtual machine in VMware Fusion in order to shrink the VM size, so it's become routine.