IMac :: Using 2 Or 3 Memory Modules?
Nov 18, 2009
While browsing around I've stumbled over a few references to things like "tri-channel memory" and such. From what I understand (not that good with these things) some computer architectures / CPUs are optimized for using 3 memory modules, and some for using pairs (2 or 4).
I just read some benchmark tests of the i7 with different memory configurations, and the 12Gb was is most cases on par or better than all the others when it came to performance, even better than the 16Gb one. Is the new iMac (i7) best suited to use 3 memory modules?
View 3 Replies
ADVERTISEMENT
Oct 16, 2009
I have a Black MacBook (Early 2008). I think that I still have the factory standard RAM sticks (I bought the Mac used from a friend). I noticed today that I am running on only one gig of RAM even though I have two gigs of memory.
View 2 Replies
View Related
Mar 20, 2012
I installed 4x2GB memory modules. Now, I have a "Memory Slot Utility" pop-up(The memory modules are installed in the recommended slots) that pops up every time I start my computer. How do I get rid of this notice permanently?
Info:
Mac Pro, Mac OS X (10.7)
View 1 Replies
View Related
Jul 25, 2008
I bought a refurbished Mac Pro (8 core) from the apple store and added 4 Gb (2x2Gb) to the 2 Gb tht came installed. I am having a peculiar problem in seeing all four of the memory modules. The only setup that shows all 6 Gb of the memory is to have the modules in the following format: a) 2Gb modules on Riser A, positions 1 and 3 plus 1 Gb mods on Riser B positions 1 and 3; b) 2 Gb and 1 Gb mods on Riser A positions 1 and 3, respectively, and the same on Riser B.
When I put them in the logically (and aesthetically better) intuitive configuration of paired mods in positions 1 and 2 of each Riser, I can only see the modules that are in position 1 of each riser. Is this something expected in the new MacPros? Is there a disadvantage of keeping this configuration? I note that a memory installation video on line stated that the way memory is installed in the early 2008 Mac Pros has changed. Does this issue result from that change?
View 6 Replies
View Related
Apr 2, 2010
O.K. I have a Black MacBook (Early 2008). I think that I still have the factory standard RAM sticks (I bought the Mac used from a friend).
View 1 Replies
View Related
Dec 27, 2008
I'm in the process of upgrading the memory on my 1st gen Mac Pro. (2 x 3.0 Ghz Xeon). Apple publishes a memory max of 16GB., but I have seen references to these machines running more. My question is, has anyone successfully run larger configurations of memory, and will these systems recognize 4GB modules?
View 1 Replies
View Related
Jul 30, 2010
I am planning to upgrade the standard 4gb of on my April 2010 Macbook Pro (the basic 2.4ghz model) to 6gb.
Over on Crucial memory suppliers they advise using two identical modules, i.e. 2 4gb sticks rather than 1 2gb + 1 4gb.
Can anyone chip in on whether this is good advise or just them trying to make a few more bucks?
For my needs 6gb should be perfect, I have a desktop already with that amount, although to be fair the desktop is 3 * 2gb modules.
View 3 Replies
View Related
Sep 16, 2010
I get the message: the memory modules are installed in the recommended slots. Every time I restart my 2010 Mac Pro. I upgraded my memory with 3 x 2GB OWC memories. They are properly detected, and the system is working fine.
View 22 Replies
View Related
Nov 19, 2010
So my early 2010 iMac has 8gb of memory (4 x 2GB modules).I happen to have 2 spare 4gb modules that are from a MacBook pro of the same era - i.e they are DD3 1066Mhz and they will fit.So question is - if I take out two of the 2gb modules and replace them with 2 of the 4gb machines - will the machine work and will it see the full 12gb ( 2 x 2gb plus 2 x 4 gb)?
View 12 Replies
View Related
May 6, 2010
I just received the 2GB ram upgrade I ordered for my home iMac. I already have the factory 2GB. I thought it would have 1 2GB stick alredy, and that I could add another 2GB stick, but a friend just told me it probably has 2 1GB sticks in it...anyone know?
View 2 Replies
View Related
Apr 16, 2009
I've got a refurb 21.5" iMac 3.06GHz/4GB RAM/500GB HDD arriving soon.I believe it has two 2GB modules installed in two of the four memory slots, with two other slots unused. I have a few questions before I order more RAM for my machine.
Is it advisable to have ALL the RAM modules be of identical brand and size?Can other brands of RAM be added to the two empty slots as long as they are of the same specifications? Do RAM modules need to be added in pairs or is single ok?Can the added RAM modules be of any size (1GB, 2GB, or 4GB) and still work fine with the factory installed 2GB modules?
For example, would there be any performance problem by adding a single 4GB module to the existing two 2GB modules? Or would it be better to add two 2GB modules rather than a single 4GB module?
View 6 Replies
View Related
Aug 22, 2010
I'd just like to make sure that it'll work just fine with 2x4GB RAM modules as well as 2x2GB RAM modules for a total of 12GB? I don't need to get 16GB do I?
View 7 Replies
View Related
Apr 25, 2012
can I use 2-2GB RAM modules in 2 slots and 2-4GB modules in the other two slots, or do all 4 modules need to be the same size?
Info:
iMac, Mac OS X (10.6.8)
View 3 Replies
View Related
Oct 25, 2009
I don't know what the deal is. I'm trying to install 2 sticks of 2GB into my 7,1 iMac, and the screw just won't turn. I'm using a standard Phillips head, and nothin' doin'. The screw is now starting to strip, so I guess I'm going to have to take this into the friggin' Apple Store just to have them open the thing.
View 1 Replies
View Related
Jan 16, 2010
I want to know if the wool is being pulled over my eyes by OWC. The site says that their 4GB modules for a Mac Pro Intel Xeon Quad-Core 2.66MHz can only be put into the tower if the original Apple modules are first removed. Something makes me think that this is a salesman's bluff. Anyone know for sure? Sorry if an answer to this question has already been given elsewhere.
View 4 Replies
View Related
Jul 30, 2010
I know the newer Intel QPI processors have three main-memory channels, and I've seen much discussion and several complaints on these threads that Apple didn't expand their memory risers to squeeze in six DRAM sockets instead of four, so that the module count on each riser could be a multiple of 3. (And also that they should have done this for the 2009 Nehalems).
Here's my question: what kind of performance would I be losing and why if I got one of these new Westmere machines, discarded Apple's stock memory and replaced it with 4--rather than 3--OWC 4GB sticks? What I specifically don't understand is, can't the QPI fetch from any 3 of the 4 modules at once?
View 17 Replies
View Related
Nov 16, 2010
Cheapest I found are about $160 shipped on Newegg or Macmall? Any other recommendations?
View 4 Replies
View Related
Sep 1, 2010
I have 2 1GB sticks left over after updating my 2.2GHZ Macbook's RAM to 4GB. My friend wants my old RAM modules, but his macbook is the black one from 2006. Will this RAM work in his blackbook?
View 1 Replies
View Related
Oct 10, 2010
I've read many of the threads regarding RAM pricing and configurations for the 6-Core systems. I planned on ordering my Pro with 6Gb instead of the default 3GB, but my friend at Apple forgot when he placed the order. what I understand RAM module placement and type may significantly impact system performance for this platform. As I need to double the RAM, should I purchase 3x1GB modules to add or purchase 3x2GB models and sell the 3x1 that came with the system? Also, which is the best RAM retailer, OWC, Crucial, etc?
View 5 Replies
View Related
Mar 29, 2008
I recently installed (4) - 4gb RAM modules and I'm worried that they may be running too hot. The image attached is from the machine just essentially sitting idle all day. Only 1gb of the 17gb are wired. When I do put the Mac to work, either through Handbrake or running Autocad through Fusion, the temp on module A1 reaches 173 degrees and the fan speed just about doubles.
View 10 Replies
View Related
May 4, 2009
I have an old PowerMac G4 (AGP Graphics), which has served me dutifully for a long time. However, I recently took all but 128mb of the ram out to temporarily use in other computers, and when I went to put the modules back in, basically none of them worked. Here's the deal: I have 2 256 modules, and when I put those in my computer, whether individually, together, or with other modules, I get this message on-screen and the computer does not boot: localhost:/ root# []. Similarly, I have 3 128mb sticks, but if I put more than one in the computer at a time, I get the same message. I'm thinking the computer may have some issue with more than 128mb of ram, but why all of a sudden? I don't really know anything about code or whatever the computer is trying to tell me.
View 1 Replies
View Related
Feb 24, 2012
I have a Macbook Pro 8.1 with 4GB of ram memory 1333Mhz, is there a problem if the change for a 8GB 1066MHz modules?
Info:
MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3)
View 2 Replies
View Related
Aug 18, 2008
I have this 1.42GHz G4 Mac Mini that my mother uses for very basic stuff but still gets bogged down by skype videoconferencing or by having more than a couple of tabs open on the browser. I was thinking of adding some RAM to its original 512MB (DDR 3200 on 1 module).
I checked prices on Ebuyer and 1GB of DDR3200 SODIMM will set me back �26 while a DDR4200 module of the same capacity will cost �13. I was wondering if it would be OK to mix the 2 memory types and get 1.5GB, or if I should replace the original RAM completely.
View 5 Replies
View Related
Jan 8, 2010
I have a macbook pro of 8months old.The machine is fitted with 4gb ram, 2 x 2, but is able to be fitted with 8 gb.I bought 2 x 4gb of the same type of ram: 1067 MHz DDR3When it was fitted, the computer performed great, Autocad was flying.
Alas, after a few hours the computer went berserk and started to behave odd, refused to open a prog, refused to stop and finally refused to re-start.
When I removed the new ram modules and re-fitted the old ones, I found out that my hdd was not mountable. I did resolve the issue but lost some data in the process.
View 1 Replies
View Related
Jun 2, 2010
I have set our new XServe and have PHP running fine. However, I want to use the PHP calendar module/extension. This is a standard PHP module and can be found in the standard downloads from PHP.net. I tried to take the Linux approach of recompliling PHP with --enable-calendar however, this doesn't work as there is no compiler on the system.
Any ideas on how i can get the calander module to work? The only compiled versions of PHP I can find for the Mac don't include calendar.I'm Running OS X 10.4.7, PHP 4.4.1, Apache 1.3.33
View 12 Replies
View Related
Nov 17, 2009
Curious as I want to match the speed and pre-order another 4gb of ram (2x2gb) and didn't know what speed they went with?
I assume its as easy as the old iMac's as far as a screw underneath the screen and snap them in?
Also just curious about if their was a brand name on the memory they used - not that it matters just curious?
I ordered base 4gb ram and I am guessing its 2x2gb and I here it has 4 slots so I will buy another 2x2.
View 3 Replies
View Related
Sep 6, 2010
I have an 40 GB SSD installed on my 2010 iMac 27" with a 2TB HDD hosting the users folder. I was running Transmission and encoding a DVD when I was told that I am out of Virtual Memory and must restart.
My question is: will using the SSD for Virtual Memory affect its performance down the line (as they should not be written to too much.) If so, how can I change my virtual memory storage location? *Xupport didn't work.
View 1 Replies
View Related
Mar 9, 2012
Can I add memory to my iMac?
View 4 Replies
View Related
Sep 9, 2014
Can I add more memory to my IMAC even if it is already came with 4Gh 1067 MHZ ddr3 ? I have recently upgraded to osx 10.9.3
View 1 Replies
View Related
Jun 7, 2010
How should I go about adding more memory to my 2008 iMac? I currently have 1gb and I would like to upgrade to 4-6gb, depending on the price. I've heard OWC is pretty good all around, but it appears to be that they're only compatible up to 2007 imacs, so I'm assuming that wouldn't work for my computer. What's a good, reliable, and cost-efficient brand that will be compatible for the computer I have? and how would I install it?
View 3 Replies
View Related
