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First of all, I have the Asus M4A87D-M PRO motherboard. enter image description here

And I have now two identical Apacer 2GB PC-6400 CL5 800Mhz sticks installed. I am going to buy a Transcend JetRAM 2GB PC2-6400 CL6 800Mhz stick.

How do I put all the 3 ddr2 dimms in the slots shown above so they will be stable and there won't be memory channel conflicts?

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Did you go to the Asus site and download the user manual? Did you do any research prior to posting this question? –  Moab Dec 16 '11 at 16:10
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What he said. Twice! –  OG Chuck Low Dec 16 '11 at 16:11
    
Also... Am I reading you correctly in that you are going to have 6GB total on a dual channel Motherboard??? If I AM reading that correctly, can I ask WHY you would do such a thing? Splurge, get one more stick and that will also answer your question won't it? –  OG Chuck Low Dec 16 '11 at 16:14
    
Yeah but can I get 2 more 1GB sticks? or they all have to be 2GB sticks? –  develroot Dec 16 '11 at 16:22
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Your card clearly support at least 8GB, if you want to do this, then order two identical Apacer 2GB PC-6400 CL5 800Mhz and it should work just fine. If you cannot find that brand, then order four Transcend JetRAM 2GB PC2-6400 CL6 800Mhz. –  Ramhound Dec 16 '11 at 17:30

1 Answer 1

up vote 2 down vote accepted

The answer is YES

BUT

Do not install non even number of ram.

This will cause ALL your ram to run at half speed.

Insert them in pairs..

If you really want to do then you can put it in any available slot. Does not matter, and you can mix and match makes- because it is fairly generic ram, with generic timing and speeds.

Using 3 stick might cause your boot screen to beep, or moan that the ram is running half duplex, is uneven or might even show 400mhz instead 800mhz. That is normal. When you get another stick, it will get back to normal, but make sure they are all 800mhz

If you are putting in specific ram with boosted performance. then all 4 need to be the same so you can get the best performance.

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can I have my 2x2GB apacer and add 2X1GB other ram? –  develroot Dec 16 '11 at 16:26
    
To be more clear. Yes. But it will run half speed –  ppumkin Dec 16 '11 at 16:27
    
so it doesn't matter i have an even number of ram, if they are not all the same, they will run at half speed, right? I think adding this: memoryc.com/computermemory/ddr2ram/… to my current 2x2GB apacer slots, will it work normal? –  develroot Dec 16 '11 at 16:32
    
To clarify this... if you fill each color bank with a 2gb stick and 1gb stick they will ALL run at normal full speed (unless you have literally mixed speeds and then they will all max out at the highest speed the SLOWEST chip can hit). The Half speed I think Pump is referring to is that you is from the UNEVEN number of sticks. –  OG Chuck Low Dec 16 '11 at 16:57

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