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Must ram be "identical" to run "dual channel memory tech"?

Last response: in Memory
January 13, 2011 4:44:24 PM

Info hardware:
3ghz dual core motherboard desktop.
RAM: elixir 2gb 2 rx8 pc3-10600u-9-10-bo. 1333

Motherboard manual says:
To run dual channel memory technology, RAM modul must be same
brand, speed, size, chiptype.

Is that true?
It seems, to me, impossible to find exactly that modul and for the right offer.


Best solution

a b } Memory
a c 108 V Motherboard
January 13, 2011 4:51:42 PM

Rules to Enable Dual Channel Mode
To achieve Dual Channel mode, the following conditions must be met:

Matched DIMM configuration in each channel
Same Density (128MB, 256MB, 512MB, etc.)
Matched in both Channel A and Channel B memory channels

Populate symmetrical memory slots (Slot 0 or Slot 1)
Configurations that do not match the above conditions will revert to Single Channel mode.

The following conditions do not need to be met:
Same brand
Same timing specifications
Same DDR speed
Memory channel speed is determined by the slowest DIMM module populated in the system.

*This really depends on your motherboard. Some manufacturers use a color
-coded system (meaning use the same colors) and some require that you use the symmetrical approach (meaning same slot on both channels).
January 13, 2011 5:44:34 PM

Thank you for answering with super sonic speed.

Your answer is above my knowledge level.

There are 4 RAM slots.
Two are blue and two are white.
The manual says, that blue slot ddr3 a1 and
blue slot ddr3 b1 are populated.
(The same goes for the white slots).

If I want to get one more RAM modul (both
RAM moduls will be installed in the blue slots),
will dual channel memory tech. then be supported
if I get any ddr3 240 pins RAM modul, as
long as the RAM is a pc3-10600 modul (same density
doesn't matter)?

Is that correct?

Related resources
a b } Memory
a c 212 V Motherboard
January 13, 2011 6:22:33 PM

It will only work if the technical parameters mentioned are matched. However, it must be noted that the performance difference between single channel and dual channel are far less than you would think and under most circumstances you would see virtually no difference from a user perspective.

Memory is cheap. If you really must have dual channel, I would recommend you buy a matched pair and proceed from there.

Good luck!
January 16, 2011 2:19:11 PM

how much RAM do you want.?

I want 2gb ram more. I have the understanding that w7 64 bit runs best
with 4gb or more.

I want to get another 2gb RAM module that will enable dual channel techn.
January 16, 2011 4:35:35 PM

Elixir 2gb.2rx8.pc3-10600u-9-10-bo.1333
I do not know the timing of the RAM modul.
January 16, 2011 4:55:26 PM

you stated you had 3GB are they 3x1GB sticks and are they all the same.?

No, I wrote, that I have one DDR3 RAM Elixir 2gb.2rx8.pc3-10600u-9-10-bo.1333 modul.
I do not know the timing of the modul, and I do not know how to find the
timing of the modul.

If I knew the timing of the modul, I would know what RAM card to get.
However it seems that most RAM modul seller do not write the timings in their ads.
January 16, 2011 5:16:22 PM

what is your motherboard.?
make and model..

Can you explain why you need the brand and model of the motherboard?
The motherboard supports
populated dual channel memory techn.
January 20, 2011 9:39:50 AM

Best answer selected by okppko.