"Somebody" wrote in message
...

"Mike Smith" wrote in message
...
Somebody wrote:
Is it possible to have 1.5GB RAM in a PC these days? I was under the
impression you had to put sticks in pairs (2 or 4). And that both the 0
and 1 memory banks had to have the same size??

Systems these days can have quite a few more than two banks.


Actually the guy who was trying to get me into a debate about it claimed
you
could toss in any old 512MB sticks in slots 0 & 1, and then any old 256MB
sticks in slots 2 & 3 to get 1.5GB. Maybe he glossed over the details, but
that implies 4 slots / 2 banks to me .

Re your statement about systems having more then 2 banks, which
motherboards
support this? most of the motherboards I see have 4 slots... on occasion I
see a 6 slot motherboard, but its rare. I'm not sure how the slots are
divided up on those.

The thread just made me go back and look at my Intel D875PBZ manual.

As long as you are using a matched /*pair*/ of DIMMs equal in speed,
density, and technology in the same slot of both channels you get the
benefit of dual channel. See the following PDF. Page 35 (Figure 9) even
shows a mixed configuration.

ftp://download.intel.com/support/mot...bz_English.pdf

So yes, you can have 1.5GB by using 2x512MB + 2x256MB.

As for whether this is a universal feature among various motherboards, I
suspect not.