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Posted by DJ A.i on Jun-12-2002 13:49:

DDR memory question

im upgrading my motherboard to one that supports DDR memory and im getting one with 3 memory slots. i was wondering if its true that you cant use one stick of ram, but you have to have atleast two of the slots occupied and fill in the rest with fillers???? if someone can help.... it would be greatly appreciated.. thanks.

Posted by Cafster on Jun-12-2002 15:29:

as long as your MOBO supports the DDR memory, you can just pop in one stick and it will work fine...you dont have to worry about pairing or fillers and shit like that.

Posted by Piet on Jun-12-2002 17:06:

RDRAM had some stuff like that - buying in pairs etc...
but DDR does not, u can just put one stick in and it'll be fine...

I just got a mobo that supports the new DDR 333 or 2700 DDR ram, and so i bought a stick of samsung DDR 2700, only to just find out that the current line of athlons cannot make use of this extra memory bandwith, so I would have gotten the same performance out of a 266 MOBO with 2100 DDR ram... oh well...

Posted by flystyler on Jun-12-2002 17:18:

Well i have DDR Ram, great stuff 512mb of it

2 256mb sticks, and one slot empty.

So take it from me, you cna just have 1 stick and 2 slots free and it will b fine

Posted by DJ A.i on Jun-12-2002 19:55:

ahhh.. nice.. thanks everyone! some MOFO from compusa told me that i had to put fillers in and that i had to put atleast two sticks in there! lol.. thanks for your help everyone.

Posted by Fir3start3r on Jun-12-2002 22:22:

quote:
Originally posted by DJ A.i
ahhh.. nice.. thanks everyone! some MOFO from compusa told me that i had to put fillers in and that i had to put atleast two sticks in there! lol.. thanks for your help everyone.

I think he was talking about the RDRAM, I'm pretty sure the empty slots do have to have a 'dummie' stick of ram to fill the empty spots.
(someone correct me on this if I'm wrong, I'm just thinking off the top of my head on this one )
RDRAM

The SDRAM DDR doesn't.
Is pretty much just like the normal SDRAM except for the speed of course.
SDRAM

The only one that had to go in pairs 'normally' was the older SIMMS.
That's because when Pentiums first came out, the address bus changed to 64bit (previously 32bit). Individual SIMM modules only do 32bit at a time, so a pair was needed to match the 64bit address bus of the Pentium.
SDRAM accesses 64bit which is why you only need one!
SIMMS

And now you know...the rest of the story...