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Asus M4A88TD-V EVO/USB3 MB with CMX4GX3M2A1600C9 4G kit


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I've had this motherboard for a while now and have been using CMX4GX3M2A1600C9 4G kit (2x2GB) since I bought this board. I decided to add more RAM to it so I bought another set of the same and inserted it to make 8GB.


Within all 4 sticks on the MB it doesn't post, I removed my old 2 sticks and replaced them with the new 2 and it posts.


I'm no computer newbie but this to me is strange, being that the RAM is on ASUS' qualified vendor list in the MB manual. The only issue with this is CMX4GX3M2A1600C9 is displayed twice, one shows use on only 1 DIMM & 2 DIMM while the other shows use on 1, 2 & 4 DIMM.


I have done everything possible to get it to post, the RAM is seated correctly, the MB is not damaged or faulty in any way... is there a possibility that the RAM I have bought is unable to be used 4 DIMM?


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Just to get this on the table...Corsair does not suggest or support mixing kit's like this even though they may be the same part number because of this very issue. Often when adding a second kit the newer kit will be comprised of newer or different chips than the original. So it's always best to replace and not try to add at a later date.. The fact that each kit runs fine on it's own would kind of lean towards this as the issue.


But lets see if we can't try getting them to play nice with each other first before we come to any conclusions.


With all four modules inserted , try setting the DIMM voltage to 1.6 or 1.65v and also add .2v to the CPU/NB voltage along with making sure command rate is set to 2t.


See if that makes any difference.

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thanks for your reply, I'm at work at the minute so I will do as you have suggested as soon as I get home.


What you say is a big possibility and I was hoping it wouldn't bare any effect on this build as doing this never has before.


Thanks again, I will try and post my findings

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Also, would you suggest I pick up another set of the new ram?

I would wait and see how things test out first. If we can get it to work then there would be no need to.


It might also be a good idea to test the new set one stick at a time with memtest to see if one of them is not failing. Just make sure you do not try testing them with the original memory installed and just use the first slot in the MB. Let each stick run for minimum of 3 passes or until it errors.


If it does come down to replacing the memory and you need close to the total of 12 gigs, then just get a 16gig kit that is comprised of 4x4gig modules. Your MB will not be able to use the larger 8gig modules that are available.

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