Gosh Dang it, I can't make heads or tails of the memory install advice!...

I am not a noob user, and have always installed my own memory (even the "hidden" place in a mac mini).I have a new 3.0 8 core coming in a couple days... But I swear I am reading conflicting instructions on late model Mac pros. Older "late" models come w/2 slots filled on riser A, the new ones come w/slot 1 riser A, slot 1 riser B, and there's seemingly weird advice about 6 memory modules in the Mac pro PDF,(4 and 2?) etc, yadda yadda.
Okay, here's what I'm used to in my 2.5 G5: Pairs -- one of the pair in the top holder, and its twin in the bottom holder, end of story, up and down the line -- different GB sizes etc, you just simply matched it in the other holder w/the same brand and size
Now w/the new machine, is it not this way? For the record I will have the stock 2GB (2 X 1GB) from Apple, and 8GB (2 X 4GB) 3rd party arriving shortly....
One web site posted in this discussion section seemed to spell it our exactly like on my G5, but the other sources seem to contradict, as well as the posts I've read here. Is it now the same pairs in riser A, slot 1 & 2, then maybe different size modules (pair) in Riser B, slot 1 & 2?
Please can someone explain this clearly. Thanks!!!

Go read the article from Monday:
http://www.barefeats.com
There are four sets of pairs. Two sets on each Riser. The ideal is to have 4 DIMM slots, with two on each Riser.
While the 2008 "can" do it in a new way, it is not ideal or best. The G5 was different. And confused some.
I would have gone with 4 x 2GB. And then put the Apple 1 x 2GB on Riser A slots 3 and 4.
With yours you want the 2 x 1GB on the B Riser and the 2 x 4GB on the A Riser.
http://www.barefeats.com/harper3.html

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