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Crucial Memory

D

duce2777

macrumors newbie
Original poster
Feb 10, 2012
14
0
I called to order 8 more GB of RAM from Crucial but was not sure which one to get. When I contacted Crucial this is what they sent me.

So, CT6045782 references your iMac to base part number CT2K4G3S160BJM, which is high density with 8 chips per module and CT6045784 references CT2K4G3S160BM, which is low density with 16 chips per module. Other than that,they are the same and are equally compaible.

Which one do I need low (16) or high density (8) chip?

Not sure I'm upgrading now but just wanted to know for a possible future upgrade.

Thanks
 
Last edited:
If Crucial told you they would both work, they'll both work. Whichever you buy is up to you. (Since they're electrically the same, I'd go with the cheaper of the two. If they're the same price I'd go with the high density because it has fewer parts)
 
duce2777 said:
I called to order 8 more GB of RAM from Crucial but was not sure which one to get. When I contacted Crucial this is what they sent me.

So, CT6045782 references your iMac to base part number CT2K4G3S160BJM, which is high density with 8 chips per module and CT6045784 references CT2K4G3S160BM, which is low density with 16 chips per module. Other than that,they are the same and are equally compaible.

Which one do I need low (16) or high density (8) chip?

Not sure I'm upgrading now but just wanted to know for a possible future upgrade.

Thanks
Click to expand...

Here is what I purchased. 32gb of RAM.
picture.php

2-16gb kits... There was only one option.

Now that I think about it you might be able to use a 16gb and 8gb kit and add it too a standard 8gb that comes with it... it would be some Apple RAM and Crucial RAM... not sure if that will work together.... Anyone know? it would save people some money.
 
Get the high density modules. Some people have reported issues with the low density.

I had to send my low density back to crucial because I was getting kernel panics. They sent high density back to me and my iMac ran great after that.
 
AppleFan360 said:
Get the high density modules. Some people have reported issues with the low density.

I had to send my low density back to crucial because I was getting kernel panics. They sent high density back to me and my iMac ran great after that.
Click to expand...

I bought some Crucial memory for my iMac, how do I know if they're 'high density' or not?

Thanks.
 
AppleFan360 said:
Get the high density modules. Some people have reported issues with the low density.

I had to send my low density back to crucial because I was getting kernel panics. They sent high density back to me and my iMac ran great after that.
Click to expand...

I concur with this opinion. I bought 16GB of Crucial PC3-12800 DDR3L from Amazon US and was initially shipped the low density version. I, too, experienced kernel panics so I returned it and the high density replacement has been rock solid for the past 11 months I've been using it.

eucsstamticc said:
Now that I think about it you might be able to use a 16gb and 8gb kit and add it too a standard 8gb that comes with it... it would be some Apple RAM and Crucial RAM... not sure if that will work together.... Anyone know? it would save people some money.
Click to expand...

I added 16GB Crucial to the 16GB stock Apple Elpida that I purchased the Mac with. It's best to go with matching pairs but different makes of compatible RAM used together will work fine.
 
eucsstamticc said:
Here is what I purchased. 32gb of RAM.
Image
2-16gb kits... There was only one option.

Now that I think about it you might be able to use a 16gb and 8gb kit and add it too a standard 8gb that comes with it... it would be some Apple RAM and Crucial RAM... not sure if that will work together.... Anyone know? it would save people some money.
Click to expand...
I have the 2x4GB Apple modules and 2x8GB Crucial modules in mine (24GB), it works perfectly. :)
 
Alesc said:
I have the 2x4GB Apple modules and 2x8GB Crucial modules in mine (24GB), it works perfectly. :)
Click to expand...

That is definitely good to know. It will help others save some money in the future when ordering aftermarket RAM. Apple's RAM is just highway robbery.... even for them.

Thanks for the reply.
 
i got mines from amazon believe they might of had less chips on them,had ton of kernel panics sent it to crucial and they sent me replacements haven't had a issue in months
 
I received my Crucial 16Gb RAM today for the Imac 5K. (computer is on the way).
After reading this forum I'm worried if I got the correct one. Have i got the High Density or low density Ram ?
There seems to be a lot of people having troubles with the low density Ram.

Do I count the chips on both sides ? Mines got 8 on one side and 8 on the other side.

On the Crucial site the pic shows 8 chips on one side : http://eu.crucial.com/eur/en/imac-(retina-5k,-27-inch,-late-2014)/CT6313719
I ordered here : http://www.memoryshop.be/product/309950/crucial-apple-16-gb-sodimm-ddr3-1600-kit-van-2.html

Here's a pic :
 
split-second said:
I received my Crucial 16Gb RAM today for the Imac 5K. (computer is on the way).
After reading this forum I'm worried if I got the correct one. Have i got the High Density or low density Ram ?
There seems to be a lot of people having troubles with the low density Ram.

Do I count the chips on both sides ? Mines got 8 on one side and 8 on the other side.

On the Crucial site the pic shows 8 chips on one side : http://eu.crucial.com/eur/en/imac-(retina-5k,-27-inch,-late-2014)/CT6313719
I ordered here : http://www.memoryshop.be/product/309950/crucial-apple-16-gb-sodimm-ddr3-1600-kit-van-2.html
Click to expand...

Those look like the low density BUT, no reason to worry about it. Just go ahead and put them in the iMac. They should work but if you start having issues (like Kernal Panics) have them replaced.
 
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