Craig White wrote:
> On Wed, 2007-02-14 at 16:49 -0700, Alan Dayley wrote:
>>
>> The speed issue is important in my case because the dual channel support
>> will only be possible if both sockets are populated with the same
>> capacity and speed memory modules. I want to buy a module that matches
>> the one already installed. The manufacturer specs show two possible
>> speeds for this model. I guess I'll have to open it up to physically
>> inspect for the speed.
>>
> ----
> It occurs to me that the above post suggests that there is only 1 chip
> installed and you want to pair it with another which is probably a bad
> idea for DDR interleave. You always want to buy them as a pair from the
> same stock/manufacturer and if necessary, put an unpaired DIMM in a bank
> that doesn't have an interleave which of course, defeats interleave
> benefits - thus, you may wish to remove the existing RAM if it is a
> single DIMM.
>
> Craig
The product specification from the manufacturer website states:
Memory
• Configured with 512MB DDR2 SDRAM (both memory slots may be
occupied)
• 256MB(min)/4096MB (max), 2 memory slots using 256MB, 512MB,
1024MB or 2048MB PC4200 533MHz or PC5300 677MHz DDR2
SDRAM, dual-channel support requires two memory modules of
same capacity and clockspeed
What I hear you say is that if the two memory modules are of the same
size and speed but are from two different manufacturers they will not
support dual-channel. Is that what you are saying?
I apparently have a single 512MB module already installed. I wanted to
double the RAM with a matching speed module to have more space and
dual-channel speed. But, I also wanted to buy just one module if possible.
Alan
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