Dual Channel RAM, how does that really work?

  • Thread starter Thread starter Anonymous Joe
  • Start date Start date
A

Anonymous Joe

How does dual channel ram actually work. I know it makes up a 128-bit
channel when you use two dimms placed in the correct locale, but what does
that really mean to the two dimms? Is it similar to RAID for hard drives,
so that if you store, for example, a 1mb exe file into ram as do all
programs, does 512kb get stored to dimm 0, and 512k to dimm 2 (just because
in dual channel, usually dimm0 & 2 make up a chanel, and dimm 1 & 3 do as
well, atleast on a 4-dimm board, like mine).
 
How does dual channel ram actually work. I know it makes up a 128-bit
channel when you use two dimms placed in the correct locale, but what does
that really mean to the two dimms? Is it similar to RAID for hard drives,
so that if you store, for example, a 1mb exe file into ram as do all
programs, does 512kb get stored to dimm 0, and 512k to dimm 2 (just because
in dual channel, usually dimm0 & 2 make up a chanel, and dimm 1 & 3 do as
well, atleast on a 4-dimm board, like mine).
Click to expand...

If a disk paradigm you must have, think of the pair of dimms as a 2-way stripe
set...

hth ;-)

/daytripper
 
With a 16-byte stripe?
Click to expand...

That'd depend on the burst length (which is usually figured based on cache
line size) so a cache line of 32 bytes with a "dual channel" memory, a 16 byte
stripe would be correct...

/daytripper
 
That'd depend on the burst length (which is usually figured based on cache
line size) so a cache line of 32 bytes with a "dual channel" memory, a 16 byte
stripe would be correct...
Click to expand...

Actually I forgot the --> ;-)
 
Back
Top