A7N8X - adding a pc2100 ddr to the pc2700's already installed

  • Thread starter Thread starter levittd
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levittd

Hi

I have an Asus A7N8X with 1-256Mb pc2700 ddr and 1-512Mb pc2700 ddr. Could I
add a 256Mb pc2100 ddr to the third slot and run in dual-channel mode? I had
this ddr in the second slot of the first channel previously and it caused
the computer to crash constantly, but would it work in the second channel?
This all makes sense in my head as I write, but if clarification is needed
let me know.
thanks,
levittd
 
It *might* It is best to match the ram when going dual channel but if your
gonna run dual channel 2100 i'd say it would most likely work. When you try
things like dual channel 2700 and 3200 it becomes a lot more picky.
 
I suggest you manually set the sdram timings if the "auto" setting
results in errors. The timings should be setup for the slowest stick
of sdram. I have used pc2100/pc2700 mix in my a7n8x/dlx in dual
channel mode w/o problems, but I setup the timings manually, and had
to relax some settings for the slower sdram.

--
Best regards,
Kyle
| Hi
|
| I have an Asus A7N8X with 1-256Mb pc2700 ddr and 1-512Mb pc2700 ddr.
Could I
| add a 256Mb pc2100 ddr to the third slot and run in dual-channel
mode? I had
| this ddr in the second slot of the first channel previously and it
caused
| the computer to crash constantly, but would it work in the second
channel?
| This all makes sense in my head as I write, but if clarification is
needed
| let me know.
| thanks,
| levittd
|
|
 
No you can't. For dual channel you have to use TWO, not three, sticks of
IDENTICAL MATCHED dual channel DDR RAM. Yours is not matched or identical.
 
You can run 2 x 256 in one channel and 1 x 512 in the other on some (if not
all) dual channel boards.
 
David said:
You can run 2 x 256 in one channel and 1 x 512 in the other on some (if not
all) dual channel boards.
Click to expand...

Even if one of the 256s is pc2100 and one is pc2700?

levittd
 
What I believe will happen is you will have dual-channel, but it will all
run @ the lowest speed of any single chip. So in your case, all would run @
2100.
 
Your asking for more and more trouble the more you mismatch the ram, but yes
it could work.

Keep in mind the speed rating on the ram is its MAX speed (without
overclocking it), it can run at a lower speed (And usually with lower memory
timings).
 
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