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2012 Aug: 10GB RAM (8+2): Heat Issue :(

J

johnjey

macrumors regular
Original poster
Jun 17, 2013
245
2
Northern CA
Hi Guys,

I have a 2012 Aug MBP (2.5 GHZ i5: 10GB RAM)and i installed/upgraded RAM from 4GB to 10 GB by buying off an 8GB RAM from owc and installed it along with the other 2GB chip i had from Apple, so the partition is 8+2 GB.

The pro heats up a lot, with loud fan noises, i have also installed smc fan control but it seems more a nuisance and planning to uninstall it.

how do i fix my machine ?

1. Remove the 2 GB RAM and just be with 1 slot empty and another one with 8GB

2. Remove 8GB and get back to old 2+2 = 4GB

3. Buy another 8GB RAM and make it 16GB :) [But will i be able to make my Pro consume/use it all when required?)

Please advise.. THNX !!:D

Note: When i went to the genius bar and got it checked, the dude said it's because you have over-speced the machine as its not supposed to go beyond 8 GB and also it has uneven partition.

Personally, i disagree because these machines are expandable to 16GB (even though all won't be used by pro)
 
Last edited:
johnjey said:
Hi Guys,

I have a 2012 Aug MBP (2.5 GHZ i5: 10GB RAM)and i installed/upgraded RAM from 4GB to 10 GB by buying off an 8GB RAM from owc and installed it along with the other 2GB chip i had from Apple, so the partition is 8+2 GB.

The pro heats up a lot, with loud fan noises, i have also installed smc fan control but it seems more a nuisance and planning to uninstall it.

how do i fix my machine ?

1. Remove the 2 GB RAM and just be with 1 slot empty and another one with 8GB

2. Remove 8GB and get back to old 2+2 = 4GB

3. Buy another 8GB RAM and make it 16GB :) [But will i be able to make my Pro consume/use it all when required?)

Please advise.. THNX !!:D

Note: When i went to the genius bar and got it checked, the dude said it's because you have over-speced the machine as its not supposed to go beyond 8 GB and also it has uneven partition.

Personally, i disagree because these machines are expandable to 16GB (even though all won't be used by pro)
Click to expand...


have you try to reset the SMC?
http://support.apple.com/kb/ht3964

also the PRAM?
https://support.apple.com/kb/PH4405
 
Check CPU usage in Activity Monitor to see if any processes using a lot of CPU time and heating it up. Might need to re-install OSX. As always, have a backup!
 
try to go back to old configuration. if it works, maybe it's better to have two blocks of the same type and you should buy a new 8gb to go 16
 
johnjey said:
Hi Guys,

I have a 2012 Aug MBP (2.5 GHZ i5: 10GB RAM)and i installed/upgraded RAM from 4GB to 10 GB by buying off an 8GB RAM from owc and installed it along with the other 2GB chip i had from Apple, so the partition is 8+2 GB.

The pro heats up a lot, with loud fan noises, i have also installed smc fan control but it seems more a nuisance and planning to uninstall it.

how do i fix my machine ?

1. Remove the 2 GB RAM and just be with 1 slot empty and another one with 8GB

2. Remove 8GB and get back to old 2+2 = 4GB

3. Buy another 8GB RAM and make it 16GB :) [But will i be able to make my Pro consume/use it all when required?)

Please advise.. THNX !!:D

Note: When i went to the genius bar and got it checked, the dude said it's because you have over-speced the machine as its not supposed to go beyond 8 GB and also it has uneven partition.

Personally, i disagree because these machines are expandable to 16GB (even though all won't be used by pro)
Click to expand...

You definitely don't want to be running two different sizes of RAM, you are creating a bottleneck when information is trying to be passed to and from your RAM. While the computer itself is able to be expanded up to 16gb of RAM, you want to have both slots of RAM being used at all times. So if you wanted 8gb of RAM then you should have two 4gb modules installed in the computer. The Apple Genius was right that the uneven partition is affecting your performance.

If you want more RAM buy matched 8gb RAM modules. Your computer will use as much RAM as it needs, and will utilize all of it when it needs.
 
jdsipod said:
You definitely don't want to be running two different sizes of RAM, you are creating a bottleneck when information is trying to be passed to and from your RAM. While the computer itself is able to be expanded up to 16gb of RAM, you want to have both slots of RAM being used at all times. So if you wanted 8gb of RAM then you should have two 4gb modules installed in the computer. The Apple Genius was right that the uneven partition is affecting your performance.

If you want more RAM buy matched 8gb RAM modules. Your computer will use as much RAM as it needs, and will utilize all of it when it needs.
Click to expand...

Thanks, i am taking out 2 GB today and keeping the second slot "EMPTY" to see how macbook pro responds...
 
johnjey said:
Thanks, i am taking out 2 GB today and keeping the second slot "EMPTY" to see how macbook pro responds...
Click to expand...

That will work, it might even solve your issue, but you are not going get the best performance having one slot empty. That is why they are shipped with two modules of RAM, to have better performance.

Put two of the 4gb chips in and you are going to see a lot better results...
 
jdsipod said:
That will work, it might even solve your issue, but you are not going get the best performance having one slot empty. That is why they are shipped with two modules of RAM, to have better performance.

Put two of the 4gb chips in and you are going to see a lot better results...
Click to expand...

:( well that will make me go back to the age-old 4GB RAM configuration :(, i am thinking of rather taking another 55$ 8GB chip and make it a 16GB BEAST -->
 
johnjey said:
:( well that will make me go back to the age-old 4GB RAM configuration :(, i am thinking of rather taking another 55$ 8GB chip and make it a 16GB BEAST -->
Click to expand...

That is what I would suggest, just make sure the modules match. I did that with my computer and it is awesome
 
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