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RAM Question

nuttyboy78 said:
I'm still confused between these two:

http://www.amazon.co.uk/gp/product/B00VMCUBK4?ref_=cm_sw_r_awd_duZlwb6HWQ5EK&tag=macr0e-21

http://www.amazon.co.uk/Kingston-HyperX-Impact-SODIMM-Memory/dp/B00NTQ0GOM/ref=pd_sim_sbs_147_2?tag=macr0e-21&ie=UTF8&dpID=418Ksp0Lp8L&dpSrc=sims&preST=_AC_UL160_SR160,160_&refRID=0V3FWPHZMSR9NYSJ94C6

If the iMac isn't capable of running at 2133MHz, why is everybody going for it over the 1866? There is a price difference of £20 between the two, so why are we paying more? I don't get it :(

Please help!!
Click to expand...
I think it depends on ones needs and expectations. For me the 8GB stock RAM and the 16GB 2133 MHz Kingston RAM is the best compromise, despite the RAM down clocking when combined, to 1866MHz. If i decide to upgrade in 6 months, i can drop in a further 16b RAM, however, they will now all be at 2133Mhz.
 
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Kendo said:
What is the best no frills RAM I can get for a 2011 27" iMac? I don't care about super fast, I just want solid RAM so my aging iMac can go for a little longer. I currently have 4GB and wanted to add two 4GB sticks for a total of 12GB. Do I need to get DDR3L or can I stick with DDR3?
Click to expand...

Crucial Ballistix Sport 16GB Kit (8GBx2) DDR3 1866 (PC3-14900) 204-Pin SODIMM Memory BLS2K8G3N18AES4 / BLS2C8G3N18AES4
on amazon
 
Can somebody please confirm that this RAM will be compatible with a iMac 5k Late 2015:

http://www.amazon.com/Crucial-Balli...60_SR160,160_&refRID=1Y1ECMN4790D383DX1A2#Ask

Some reviews state it works, others say it has caused issues. For whatever reason, I'm having a difficult time matching the exact RAM from crucial's compatibility site (http://www.crucial.com/usa/en/compa...k,-27-inch,-late-2015)-imac17,1#memoryResults) to the corresponding Amazon RAM (want to take advantage of my prime membership).

Any help would be appreciated.
 
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Kendo said:
But isn't 1866 a bit overkill for my 2011 iMac? It only needs 1333.
Click to expand...
Ahh, glaring omission, missed it was a 2011 IMac. I would go for crucial, been using them for years, and never had an issue. The only reason i went for kingston is that firstly, the official supported RAM was not available, and secondly, it offered higher clocked ram, thus i can upgrade to 32gb 2133MHz in future.

-----------------------------------------------------------------------------------------------------------------------------------------


Installed 16 GB Kingston 2133 RAM as 2x8GB
combined with 8 GB 1867 stock RAM
Giving me a total of 24GB RAM working at 1867MHz.

Interestingly, i am constantly using 10-12 GB of RAM, 10 tabs safari, 5-10 tabs chorme, itunes, evernote, word, powerpoint, mail, itunes, live wallpaper 4k, dropbox, citation manager. I am yet to to VM windows 10 for some work apps.
 
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Kendo said:
But isn't 1866 a bit overkill for my 2011 iMac? It only needs 1333.
Click to expand...

My Late 2011 MBP came with 16GB 1333MHz RAM and 16GB 2133MHz made it noticeably faster. Geekbench proved that it was not just my imagination. I think I actually posted the screenshots somewhere in this thread.
 
nuttyboy78 said:
I'm still confused between these two:

http://www.amazon.co.uk/gp/product/B00VMCUBK4?ref_=cm_sw_r_awd_duZlwb6HWQ5EK&tag=macr0e-21

http://www.amazon.co.uk/Kingston-HyperX-Impact-SODIMM-Memory/dp/B00NTQ0GOM/ref=pd_sim_sbs_147_2?tag=macr0e-21&ie=UTF8&dpID=418Ksp0Lp8L&dpSrc=sims&preST=_AC_UL160_SR160,160_&refRID=0V3FWPHZMSR9NYSJ94C6

If the iMac isn't capable of running at 2133MHz, why is everybody going for it over the 1866? There is a price difference of £20 between the two, so why are we paying more? I don't get it :(

Please help!!
Click to expand...


My iMac is working fine running at 2133MHz

2uxvls2.png
 
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Late 2015 Skylake iMac 27" 4.0gHz

From top to bottom:
OWC 64.0GB (4x 16GB) PC3-14900 DDR3 1867MHz SO-DIMM 204 Pin CL11 Memory ($675) vs
2x HyperX Impact 16GB (2 x 8G) 204-Pin DDR3 SO-DIMM DDR3L 2133mHz (PC3L 17000) Laptop CL11 Memory ($210)
vs Crucial8GB 204-Pin SODIMM DDR3 1866mHz PC3-14900 CL13 Memory ($120)

Is that the right thinking?

Also, how much should I care about 1866 vs 2133 and CL11 vs CL13? The larger the ram size is still the most important, no?
 
I have an older 2011 iMac that I want to extend the life for just a little longer by adding a 250GB SSD drive and more RAM. I'm not trying to spend top dollar, just make it more functional for two more years. Would it be most economical to simply by 8GB of RAM (4x2) and add it to my existing 4GB (2x2) for a total of 12GB? Rather than buying 16GB (2x2) and discarding the older RAM? Will that extra 4GB from 12 to 16 make a huge difference?
 
Alesc said:
Crucial Ballistix 1866 MHz!
http://www.crucial.com/usa/en/bls2k8g3n18aes4
Click to expand...
I 2nd this.

I do have to say I recently have a 1 of the 4 sticks go bad, I contacted Crucial via email and they are going to replace with a new stick of RAM as soon as I send out the bad one.
I really can not complain as it is very fast and out of 5 27" iMacs with Crucial RAM this is the 1st time I've had a bad stick, no receipt, no original package and they are still going to replace it ASAP.

This is the exact RAM I use
.IMG_0744.jpg
IMG_0745.jpg

I only ever match my RAM to the CPU in the computer. Look up CPU specs and it will usually tell the type of RAM and speed it supports. I buy the fastest RAM that CPU supports and haven't had that ever steer me wrong.
 
if you want 64gb of ram it will cost you 700 dollars from owc you get 4 16gb of ram sticks.i maxed it out to 64gb of ram
 
I have two stock sticks installed and adding two more. How do I pair up the RAM so it'll function properly? I currently have 2GB and 2GB, and adding 4GB and 4GB. Do I do 2, 2, 4, 4...or... 2, 4, 2, 4?
 
Kendo said:
I have two stock sticks installed and adding two more. How do I pair up the RAM so it'll function properly? I currently have 2GB and 2GB, and adding 4GB and 4GB. Do I do 2, 2, 4, 4...or... 2, 4, 2, 4?
Click to expand...
im not sure i just took out the 8gb of ram and put in the 4 16gb ram sticks that i got
 
Kendo said:
I have two stock sticks installed and adding two more. How do I pair up the RAM so it'll function properly? I currently have 2GB and 2GB, and adding 4GB and 4GB. Do I do 2, 2, 4, 4...or... 2, 4, 2, 4?
Click to expand...

Click on :apple: / About this Mac / System Report / Memory.

Then you'll see that there is a Bank 0 and a Bank 1 and where the current RAM is now in.

I think it's better to put both sticks of each type in the same Bank.

Edit:

What iMac do you have?

I don't think there is any iMac with a 12GB limit
 
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maflynn said:
Not yet I believe you can only get to 64GB and that's because Skylake can only address up to 64GB of ram
Click to expand...

:eek: I never posted the second sentence under "Edit:".

I at first wanted to explain that it may not work this way if 12GB is the limit and then found out there is non. Then I deleted my unfinished sentence and closed the edit window.
 
Erdbeertorte said:
Click on :apple: / About this Mac / System Report / Memory.

Then you'll see that there is a Bank 0 and a Bank 1 and where the current RAM is now in.

I think it's better to put both sticks of each type in the same Bank.

Edit:

What iMac do you have?

I don't think there is any iMac with a 12GB limit
Click to expand...

Not sure what you mean? Basically I have 4GB of RAM (2GB x 2) in my iMac 2010. I bought 8GB more (4GB x 2). I want to know if I have to put it in a specific order or can I just put all the sticks in 4 slots in any order?
 
I meant this to see where your RAM is now:

Screen Shot 2016-01-09 at 15.46.23.png

Your iMac should have four of them: BANK0/DIMM0, BANK0/DIMM1 and BANK1/DIMM0, BANK1/DIMM1.

And it may be better when two different kinds of RAM not use the same BANK. But I am no expert. :oops:
 
Kendo said:
Not sure what you mean? Basically I have 4GB of RAM (2GB x 2) in my iMac 2010. I bought 8GB more (4GB x 2). I want to know if I have to put it in a specific order or can I just put all the sticks in 4 slots in any order?
Click to expand...
You can install the new one without removing the existing memory but for optimal system performance, you would need to put the new memory where the current memory is housed, and put the existing memory in the current empty slots.

bank0/dimm0 4 Gb

bank0/dimm1 2 Gb

bank1/dimm0 4 Gb

bank1/dimm1 2 Gb
 
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