PC Ram ... how to configure on…
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PC Ram ... how to configure on motherboard?
daveso
Posts: 7,287
I can't seem to find the answer to the question. My current MB has 4 slots for ram. Two are occupied ... A1 and B1. I bought two additonal sticks ...
Would the 1st pair then move to A1/A2 and the new pair in B1/B2 or would the new pair go in A2/B2? Or does it even matter?
This is the only thing mentioned in the MB manual.
ram.jpg
547 x 762 - 106K
Post edited by daveso on
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Comments
A1 and B1 will give you single channel memory
A1 and A2 will give you dual channel memory - you need this one, and the memory bandwitdh doubles
A1 and A2, B1 and B2 will give your either dual channel memory or quad channel memory depending on CPU
Short answer, put the new sticks in the empty slots if you are leaving the old ones in place. If not replace the old sticks with the new ones.
On my new MB there's a small print which banks to populate first when installing modules pair wise, in my case A2 + B2, and, when I see the recommended memory config (fig. 2) for your MB, it should have been this way too.
But it doesn't matter now, I agree with kenshaw011267, simply put the new pair into the empty banks.
If they are the same size as the existing ones, just put them in the empty slots. If they are different size from the originals, then you'll need to put two sticks of the same size in A and two sticks of the same size in B.
BTW, you're supposed to put 2 dimms in the furthest slots away from the CPU that are numbered the same. In your case, it appears the original dimms should have been installed in A2&B2 as shown in the image under "recommended memory configuration".
Some motherboards require the RAM to go in the slots further away from the socket first and some don't.
I just went through this with my own new computer motherboard (first one in 8 years). Also an Asus (as your's appears to be). Your first memories should have gone in slots A2 & B2. I don't know why other than the fact that the "2" slots are "farther away" from the CPU than the corresponding "1" slots
.
Assuming that your old memories are a matched pair and your new memories are a matched pair also, your new memories (regardless of capacity) should go in slots A1 & B1. As shown in your diagram. But as Kenshaw suggested above, at this point it doesn't matter, your computer has worked (not that it wouldn't) and hasn't blown up (not that it would), so just put the new memories in the unoccupied slots.
The only remaining nagging question is: Are your new memories the same as possible as the old memories? Especially having the same CAS latency
. Ideally, the same manufacturer, latency, model, and capacity for tip-top dual-channel functionality.
Memory latency is a complex subject with several sub-topics. Although I believe the quick & dirty number for CAS Latency is the first number in the set of 4 hyphenated numbers describing the memories. example: ( ww-xx-yy-zz) But don't take my word for it. Look it up.
Mis-matched CAS latency may not fail (but that's possible too) but it would probably be less quick than ideal.
Actually if you put 2 sticks into the wrong slots of a 4 slot motherboard the system may not boot. It just depends on the manufacturer.
thanks everyone ... i just realized another potential probem .. i bought the same memory that is in my system, or appears to be, but now I found out they have specific for Intel or AMD. I've been doing searches and found that they appear to be exactly the same, other than branding, but I have an email out to the manufacturer. We will see
There is no difference. The only time you need to worry about things like that are when you want RAM for an Apple or certain OEM brands (Dell).