I dowloaded the manual to your motherboard from Asus and looked up the info about memory (page 1-11). Here's the page, but to be honest I don't fully understand it :redface: :
There some additional info on page 1-10.
So either you run with 1 DIMM, or you use dual channel is what I make of it?
Make sure you have them in the proper slots (same colour).
Sorry, can't really make much more of it.
Hi Joris
Manuals are something I have been using for the last couple of decades .. I am sure it's where the RTFM phrase started .. Thanks for taking time to dig into my problem though and here is a short educational trip for you too .. you may well need it later when trying to figure out your own board problems ..
I've modified your picture to show my memory sticks highlighted with yellow and a red arrow pointing to them. The Transcend & JetRAM are more or less identical except that one set of boards have an extra Chip for parity but that hasn't been enabled in BIOS. parity checking costs time ..
In table 1 we are shown how we can use a single stick of single channel memory. It shows that the memory stick may be inserted into any memory slot, and should be recognised. There is no requirement (as in some motherboards) to use a specific slot first.
In Table 2 we are shown where we can use "pairs" of identical RAM in order to make use of DDR technology. We should use slots which are of the same colour. It doesn't make any difference which colour we use as long as we use both at the same time. If we do this we will be able to use DDR memory in Dual Channel mode, which will effectively increase our memory access time.
When I was checking my sticks, as pairs, I was making sure that all memory was inserted as per table 2. In fact my current memory is installed as per table 2 with all 4 slots populated, ie installed, and each manufacturers pair is installed in the same colour slot.
When I checked out the memories individually I put the stick in the first BLUE slot closest the CPU or DIMM A1 (BLUE).
The Notes below table 2 tell me that I can install pairs of sticks with different sizes ie 2 * 256MB plus 2 * 512MB in DDR mode provided I keep the pairs in the same coloured slots. That is also what I had done.
Hope this helps you to understand what I have been doing and might help you also to understand what you may have to do later should you get into this state. I was justb trying to confirm that I wasn't going to get any problems by mixing, since although theory is fine, a dose of experience cannot be beaten to understand the real situation.
This is the mobo and what you might not be able to see is that the memeory slots are coloured blue, black, blue, black from the CPU.
