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ASUS Support Home Location : Forum > Motherboard > M3A78-EMH HDMI  
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  Topic : [Problem]want to add more ram New Topic
chris
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Posted:12/12/2010 6:48:00 AM # 1
i currently have 4 gig's of 1066 in the asus m3a78-emh-hdmi board. i want to add 4 more gig's but read somewhere that the board will only read 1066 memory one stick per channel. so should i run 800 stick's in a-2 and b-2 or get two more 1066 stick's? if it can only read 1066 once in each channel then i should be able to run whatever mhz in the other two dimm's. any idea's?

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Ulrich
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Posted:12/12/2010 8:23:00 AM # 2
Hi chris.. 

What processor do you have installed...?

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There are 10 kinds of people in the World...Those who understand binary, and those who dont!
chris
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Posted:12/12/2010 8:28:00 AM # 3
athlon 64x2 dual core 5600+

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Ulrich
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Posted:12/12/2010 8:49:00 AM # 4
Hi Chris..

I think you really need DDR2 800 memory for that processor..  I doubt you can run the memory at 1066Mhz and I have a feeling that adding more DDR2 1066 is going to cause some problems. 

The one module per channel issue applies to the early Phenom Agena core processors... 

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There are 10 kinds of people in the World...Those who understand binary, and those who dont!
chris
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Posted:12/12/2010 8:55:00 AM # 5
ty much, so should i get 2 800 stick's then to fill the other dimm's?

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Ulrich
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Posted:12/12/2010 9:11:00 AM # 6
Hi chris..

This is a tough problem because when you add new memory to old, you run into problems even when the memory runs at the same speed...  What I would do is contact the memory assembler for the memory you now have installed and discuss your issue and what you would like to do.  The board was never tested with 8GB of DDR2 1066memory... and so getting that much to work may be a real headache...  But Asus did get 8GB of DDR2 800  Apacer memory to work..  so I expect that would be a much easier configuration to operate successfully.

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There are 10 kinds of people in the World...Those who understand binary, and those who dont!
chris
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Posted:12/12/2010 9:50:00 AM # 7
alright, thank you for the info.

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chris
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Posted:12/12/2010 10:11:00 AM # 8
www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4148851&CatId=3413         

this is what i have now and it is running at 1066. in the bios i have it running at 2.1 volt's and manual clock set to 533. if i purchase memory it will be the same just maybe the 800 mhz instead of the 1066. but i understand what your saying.

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chris
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Posted:12/12/2010 10:13:00 AM # 9
my current window's index is 6.1, 7.1, 7.0, 7.0, 5.3 on window's 7 ultimate 32 bit.

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Ulrich
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Posted:12/12/2010 11:00:00 PM # 10
Hi chris.. 

Well, that is interesting...  If your memory is running at 1066Mhz, then your processor is running at 266Mhz... and that is a miracle...!!!  Athlon64 X2 processors can not run that fast.

If possible, run CPU-Z and see if you can post a link or a screen shot of the information..  I would really be interested in seeing that data...

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There are 10 kinds of people in the World...Those who understand binary, and those who dont!
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