Aspire ATC-120-UC22 memory acknowledgement?

I have a costco system.

Acer Aspire ATC-120-UC22
It came with 4GB of memory (kingston) 1 stick 4 GB -1600

I bought an 8 GB kit...crucial memory... 2 x 4 GB

The system has 2 blue ports for memory and 2 black ports.
THe 4GB stick was in the blue port and that port was closest to the processor (the middle)

I was advised to put both things of memory that I bought in the same colors.
So I put both of the 4GB-1866 memory sticks in the blue slots. I took out the 1 4GB that was there and moved it to the black slot in between.

BOoted up the computer.

It is not acklowledging the next 2 slots. It still only sees 4GB.

I scanned the system using crucial's scanner http://www.crucial.com/
It still seemed to show that only the FIRST slot had 4GB of memory in it.

I'm puzzled.

Help.

Is there a way to see more accurately what is in the next 2-3 slots?
is there something I have to "turn on"?
Should I move the memory?
THings do seem fine now as i'm online. But it says the extra memory isn't there.

Accepted answers

RevoMaxx

Important as you found out is the make sure they Pair are in the same Colors... But your sytem should be set up as stated below to work right.

Size DIMM1 DIMM2 DIMM3 DIMM4

2G 2G N/A N/A N/A

4G 2G 2G N/A N/A

4G 4G N/A N/A N/A

6G 2G 2G 2G N/A

6G 4G 2G N/A N/A

8G 2G 2G 2G 2G

8G 4G 2G 2G N/A

8G 4G 4G N/A N/A

8G 8G N/A N/A N/A

10G 4G 2G 2G 2G

10G 4G 4G 2G N/A

10G 8G 2G N/A N/A

12G 4G 4G 2G 2G

12G 4G 4G 4G N/A

12G 8G 2G 2G N/A

12G 8G 4G N/A N/A

14G 4G 4G 4G 2G

14G 8G 2G 2G 2G

14G 8G 4G 2G N/A

16G 4G 4G 4G 4G

16G 8G 4G 2G 2G

16G 8G 4G 4G N/A

16G 8G 8G N/A N/A

18G 8G 4G 4G 2G

18G 8G 8G 2G N/A

20G 8G 4G 4G 4G

20G 8G 8G 2G 2G

20G 8G 8G 4G N/A

22G 8G 8G 4G 2G

24G 8G 8G 4G 4G

24G 8G 8G 8G N/A

26G 8G 8G 8G 2G

28G 8G 8G 8G 4G

32G 8G 8G 8G 8G

Sorry if once posted it don't look 100% right but should be good enough to give you the right idea of what and how they should be placed. YOur slots should have DIMM1 DIMM2 and so on.

Hope this was helpful

James

All comments

laurent_14

Hello,

The order of upgrade is DIMM1, DIMM2 and DIMM3 slot (printed on the PCB).
I think #1 and #2 are blue and #3 is black (difficult to see)
Could you test with only the Crucial memory modules installed in #1 and #2?

CrimsonFox

what's a PCD?

I did finally figure it out simply by twiddling with them. The two new crucials go in the blue and black furthest away from the processor. The old kingston memory went in the blue next to those.

The one closest to the processor was left empty.

it didn't make sense but that was the only way it acknowledged 12 GB.

using JUST the blue slots with the crucial gave me 8. using the 3 in other configs gave me 4.

and if I left the slot furthest away empty the computer beeped angrily.

laurent_14

PCB means Printed Circuit Board

So DIMM:

Blue <== Crucial
Black <== Kingston
Blue <== Crucial
Black <== Empty (near the processor)

You have a memory amount of 12Gb like this?

RevoMaxx

Important as you found out is the make sure they Pair are in the same Colors... But your sytem should be set up as stated below to work right.

Size DIMM1 DIMM2 DIMM3 DIMM4

2G 2G N/A N/A N/A

4G 2G 2G N/A N/A

4G 4G N/A N/A N/A

6G 2G 2G 2G N/A

6G 4G 2G N/A N/A

8G 2G 2G 2G 2G

8G 4G 2G 2G N/A

8G 4G 4G N/A N/A

8G 8G N/A N/A N/A

10G 4G 2G 2G 2G

10G 4G 4G 2G N/A

10G 8G 2G N/A N/A

12G 4G 4G 2G 2G

12G 4G 4G 4G N/A

12G 8G 2G 2G N/A

12G 8G 4G N/A N/A

14G 4G 4G 4G 2G

14G 8G 2G 2G 2G

14G 8G 4G 2G N/A

16G 4G 4G 4G 4G

16G 8G 4G 2G 2G

16G 8G 4G 4G N/A

16G 8G 8G N/A N/A

18G 8G 4G 4G 2G

18G 8G 8G 2G N/A

20G 8G 4G 4G 4G

20G 8G 8G 2G 2G

20G 8G 8G 4G N/A

22G 8G 8G 4G 2G

24G 8G 8G 4G 4G

24G 8G 8G 8G N/A

26G 8G 8G 8G 2G

28G 8G 8G 8G 4G

32G 8G 8G 8G 8G

Sorry if once posted it don't look 100% right but should be good enough to give you the right idea of what and how they should be placed. YOur slots should have DIMM1 DIMM2 and so on.

Hope this was helpful

James

CrimsonFox

Nice chart thanks! altho it didn't totally answer the other question of...which one is dimm 1?

From evidence I guess the furthest DIMM away from the processor is DIMM1 and that one is blue. That was the one that the initial stick was in. This of course goes against how everyone is telling me it SHOULD be.

But that's how it is.

Cruc, Cruc, King, empty.

RevoMaxx

Yes dimm1 is further away. Cpu out. Dimm4, Dimm2, Dimm3 and Dimm1 sounds like you got them worked out.. Sorry took a while to try get it lined up in that post. They are marked just hard to see

James

acercc

I have the same system. I just got two 4GB Crucial sticks, installed them the same way you did, and up and running with 12GB of RAM in 5 minutes thanks to your posts.

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