DDR and Dual Channel operation


W

Wolfi

Does a JEDEC conform 6 layer DDR (f.e. DDR433, DDR400, DDR333) memory module
and SPD Ram need to meet any additional requirements in order to work in
Dual Channel mode with nVidia nForce2 Ultra400 or Intel Canterwood 865PE/G
and 875P chipsets?

Or can any pair of modules specified as DDRxyz be expected to work in Dual
Channel mode as well?

MTIA
Wolfi
 
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V

\(\) |V| 3 G /-\\

i`m running JEDEC spec pc3200 twinmos ram (atleast i presume it's JEDEC
conforming - bought fairly recently) on the nf2u in dual channel - runs
perfectly.

i cant see a reason why non JEDEC conforming ram cant run in dual channel as
it tends to be a motherbaord supporting format, not a ram supporting format.
(eg, like RAID arrays - it's motherbaord/raid controller card supporting -
you dont buy a HDD thats made for RAID)

tim
 
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W

Wolfi

From what I found so far, mostly on INet shop websites, that they often
stress out, that 6-layer low noise PCBs and especially some DCh-mode
settings in the SPD EEPROM chip on the module seem to be required for
modules to work ok in DCh mode.

Which in reverse would imply, that cheap(er) ordinary no-name/no-brand
modules would miss some of the requirements of successful DCh capability.

I'm not a gamer, so I don't need any of these expensive OC capable CL2 or
CL2.5 modules, but I want to be sure first, that I don't run into some kind
of hidden trouble, when I just go for the next best good offer for f.e. CL3
modules to be used in DCh mode.

Wolfi
 

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