Dual Channel or triple channel RAM?

I am worried i may have the wrong ram. When i placed my order for the the board, my vendor researched and said it used dual channel so he sent two 2 gb sticks of DDR3 1333 (Kingston) in a dual channel kit but looking at the manual it appears that the x8dah+ uses triple channel? Do i need to get 1333 ddr3 triple channel instead of the dual channel i have now? If it matters i will be using win xp 32 bit for now until i get win 7 64 bit. I have also seen some stuff that indicates that the 5520 chipset can use dual or triple channel. Also in the manual is this"When populating DIMM modules always start with Channel1 (#P1-DIMM1A, 1B and 1C) first"

The manual is here http://www.supermicro.com/manuals/ [...] L-1060.pdf

Any help appreciated...

Wow, that's quite a motherboard!

Designed for 1 or 2 1366 Intel CPUs and has 9 RAM slots for each CPU! This is a very high-tech board - are you planning to control the Mars mission?

And for all this, you're putting in 4GBs of RAM? It requires 3 modules of something, likely at least 6GBs, assuming you have only one CPU in it. There's no indication that this board would support dual-channel memory. All RAM needs to be in 3 module sets to run properly and as sminlal said, there's no option mentioned in the manual for less than full population of the channel(s). (Until you upgrade from XP 32-bit, only 3.5GBs of less of this RAM will show in Windows)

You could get another single IDENTICAL module but I'd stick with returning the 2 piece kit and getting a 3 piece kit. Your vendor must have been a complete doofus not to figure this out before sending it - everything about the board screams triple-channel. The # of slots, the CPU, the chipset, etc...

Since he made such a big mistake about the RAM, are you sure you don't have a LOT more board than you need also? Geez, it supports 144GBs of RAM!!! This is a BIG board, over ATX sized, designed I guess for dedicated server use. I show this board selling for about $450 discounted.

In addition and very important - make sure any RAM you are sent is rated at 1.5V and no more than 1.65V.

Here's the motherboard home page
http://www.supermicro.com/products [...] X8DAH+.cfm

Wow wow wee wah!
Its a beast fo sheezy.

Having said that... if you need help figuring out the difference between DDR2 and 3 ram...
do you actually NEED such h/ware?

To answer your question... if you are running such a setup there is no point doing it anyway other than perfectly.

Using such h/ware with 4Gb of ram is a criminal offence too. Again, i dont know what you are doing with it but for such a setup id run a min on 8Gb, which is 6, 9 or 12Gb in DDR3.