Giriş
Upgrade RAM modules for an instant boost in speed.
Neye ihtiyacın var
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Loosen the three Phillips screws securing the access door to the bottom edge of your iMac.
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Remove the access door from your iMac.
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Use your fingers or the tip of a spudger to slide the black plastic RAM tray pull tab out of the RAM slot.
Bonjour, j’ai arraché la languette. Conséquence, elle est inutilisable et je ne peux pas retirer la barrette. Comment faire autrement ? Est-ce que cet outil peut être utile ?
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Pull the black plastic tab away from the iMac to eject the RAM chip from its socket.
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Use your fingers to slide the RAM chip out of its socket.
None. 4mb ram is too old to fit into any computer manufactured after like 1998.
@Brett
I suggest that you learn your unit symbols before you try to appear clever:
4mb == 4 milli bits
4MB == 4 mega bytes
nowsc was obviously meaning 4GB not 4MB, try not to be a dick.
Just for the records :
4 millibits are 0,000000004 MB
There was never any RAM in mb and the question states MB and nobody except you is talking of millibits.
You are also a dick if you try to spread “your knowledge” nobody has asked for
Take care to note which way out the RAM comes - there is a notch in each RAM and it is not centered, therefore either the notch will be on the left or to the right (depending on which way up you have your iMac). This will make it easier to replace the RAM without damaging anything.
If damaged the notch inside one pair of RAM slots, is it fixable ?
its not that hard to say that you can add up to 4GB sticks, bringing a total to 16GB
Does it make a difference which slots you put sticks in? Should they be inserted in slots left to right or can they be inserted on one side (front/back)? And I've seen it referenced as "Channel A (slots 1 and 2) and Channel B (slots 3 and 4)", no diagram as to which is which.
It does make a difference, but only if you have a single stick of memory. Here's what Apple says about the 27" 2011 iMac:
"i5 and i7 Quad Core iMac computers come with both top memory slots populated. These computers will not start up if only a single DIMM is installed in any bottom slot; these computers should operate normally with a single DIMM installed in any top slot.
Core Duo iMac computers should operate normally with a single DIMM installed in any slot, top or bottom. ("Top" and "bottom" slots refer to the orientation of the slots in the pictures below. "Top" refers to the slots closest to the display; "bottom" refers to the slots closest to the stand.)"
Source: https://support.apple.com/en-us/108317#2
Amusingly, although Apple defines "bottom" as being closer to the stand, that is opposite to the orientation of the pictures.
Apple does not mention memory channels in their text or diagrams. Since they came with both top slots populated, a good bet is that they are on separate channels (left and right).
hackerb9 -
(Update: I believe Apple's wording was incorrect. "Top" is closest to the stand, not the display, because those are the slots which had the SO-DIMMs in the iMac I just checked.)
hackerb9 -
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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My wife's ageing iMac currently has 4x2GB, and it is creaking under even light use (on Mavericks... haven't dared upgrade any further yet).
I want to initially upgrade it to 2x8GB, which seems nice and easy. My question is is it then possible to add one more 8GB for a total of 24GB, or would I need to add 2x8GB for a total of 32GB? Will the iMac see and use 3 RAM modules, or does it need to be an even number, like in the old PC days?
Thanks!
Maximum memory: 16384MB. See crucial for more information :
Easy mode. Note that the bits is called PZ1 most screwdriver sets. Also known as Japanese Phillips, the bid comes to a + instead of to a point. A 2.0 flathead will also turn the screw.
Oh and, don't forget to check your black flats back in. Otherwise you'll get too funny little appendages sticking out the bottom when you reattach your access door :)
2 Comments:
* firstly you may have to pull twice on the tab to release both RAMs as sometimes the first slot gets a little stuck.
* secondly - I've been having some trouble with different RAM chips - can anyone please tell me the definitive answer for how much RAM each slot will take, and what speed and latency? My iMac seems "finicky" about brands too!!!
I get that theres a 16G max.
Can I mix chips of different size?
Example 1: 2X2G + 2X4G
Example 2: 2X2G + 1X8G +1X4G
I'm trying to figure if I can just add to existing memory or if I should just bite the bullet and install all new.
Also should I worry about matching the brand of chips?
Thanks!
I am going to put a very important comment here. Before you start this process listen to the fans on your iMac do any of them sound obviously loud (think about how quiet your iMac used to sound as a reference) If you notice one or more of them sounding substantially loud compared to the others consider locating a replacement fan prior starting this process. After all if you are already “in the neighborhood” it is a shame to do all this work only to have to disassemble your imac a couple weeks later because you realize the fan is failing. I speak from my own personal learning experience of having to disassembly my iMac 3 weeks later because the HDD was failing and apparently the moving the fan around was just enough to push it to start really under performing.
Wizbang FL - Yanıt
I’m not sure why it is necessary to remove the RAM. As far as I can tell, it can remain in place during this procedure.
gordonhamachi - Yanıt