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MSI Z87-G45 Dual Channel Memory Confusion

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January 18, 2014 3:19:14 PM

This may be a silly question, but I've been all over Google and cannot find a solid answer. I have an MSI Z87-G45 gaming mobo and two identical 8 GB sticks of RAM. The manual shows using either DIMM 2,4 or DIMM 1,2,3,4 for dual channel. However, I've always been under the assumption that you start with DIMM 1,3 for dual channel, because it is closest to the CPU, and then use 2,4 for your second set. Where should I place the RAM. Will it make a difference if I use 1,3 or 2,4?

This is only the second PC I've built, so I'm not that experienced, but I'm guessing I should just follow the picture in the manual. I thought I'd post here just to make sure. Thank you in advance for any assistance.

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a b V Motherboard
January 19, 2014 12:43:53 AM

I've got a similar board*.Use dimm 2+4, second slot from the left, and the far right slot. You could use dimm 1+3 and there would be no difference but sometimes just doing what the book says is for the best. Most manuals actually say to use dim 2+4 first rather than 1+3 but again, there is no difference.

*I have the MSI Z87-GD65
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January 19, 2014 7:20:10 AM

Illumynization said:
I've got a similar board*.Use dimm 2+4, second slot from the left, and the far right slot. You could use dimm 1+3 and there would be no difference but sometimes just doing what the book says is for the best. Most manuals actually say to use dim 2+4 first rather than 1+3 but again, there is no difference.

*I have the MSI Z87-GD65


Good to hear someone agreeing with my first though. I'll put the RAM in 2 & 4 then. Thanks so much!
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January 21, 2014 7:13:12 AM

Bozen said:
Illumynization said:
I've got a similar board*.Use dimm 2+4, second slot from the left, and the far right slot. You could use dimm 1+3 and there would be no difference but sometimes just doing what the book says is for the best. Most manuals actually say to use dim 2+4 first rather than 1+3 but again, there is no difference.

*I have the MSI Z87-GD65


Good to hear someone agreeing with my first though. I'll put the RAM in 2 & 4 then. Thanks so much!


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January 21, 2014 7:16:32 AM

I have the same MB and could not get it to boot unless i put my memory in slots 1 and 2
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a b V Motherboard
January 21, 2014 8:07:38 PM

If you are getting that error I suggest you take a very close look at the pins in the socket. 1 to 4 pins may be bent and cause that error. I've seen it all too often when people come in for repairs at my work. You should make another thread for this though.

PM me if you do. I'll help you if I can.
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March 9, 2014 3:13:44 PM

it actually says on the mobo (Z87-G45) Dimm 2 Dimm 4 First (on the left side near the bottom of the socket. So yeah, most def 2 and 4 then
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July 19, 2014 7:51:16 AM

Phillip Ledford said:
I have the same MB and could not get it to boot unless i put my memory in slots 1 and 2


I have this same problem. Only 1&2 will boot system. Did you figure this out?
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a b V Motherboard
July 19, 2014 7:09:38 PM

Sugraray said:
Phillip Ledford said:
I have the same MB and could not get it to boot unless i put my memory in slots 1 and 2


I have this same problem. Only 1&2 will boot system. Did you figure this out?


Make a new thread, you would get more help. if 1+2 boots rather than 1+3 or 2+4, you are looking for an issue in the way the system is handling single channel RAM vs dual channel RAM. Typically we find this issue with the processor or socket pins.
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