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#1
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is dual channel a memory feature or a MoBo feature?
Corollary: Are all memory chips therefore dual channel compatible?
Another question: How can one tell whether RAM is being accessed at a dual channel speed? Thanks! |
#2
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On Mon, 25 Jul 2005 17:07:29 -0400, "msim"
wrote: Corollary: Are all memory chips therefore dual channel compatible? Dual channel is always a motherboard feature, there is no difference in the memory (chips, PCB, or timings for dual channel). Many times manufacturers (or resellers) will simply market it as such "dual channel" memory. Another question: How can one tell whether RAM is being accessed at a dual channel speed? Your BIOS may list it in the information screen when it POSTs. Some utilities might tell you, though I don't know which ones- you could Google for some. Also benchmarks should reveal it, bench the memory with a single module and compare to having two modules installed. If two modules are faster that is evidence of dual channel mode, as ANY properly working bios should at very most, have same memory parameters with more memory modules installed but often slower as a result (unless you were manually changing the memory related settings). Thus, two memory modules not in dual channel mode would not be faster than either of the modules alone, presuming that you at least have enough memory that the system isn't using the pagefile for virtual memory during the testing. |
#3
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Dual channel memory is a motherboard feature. HOWEVER, in order to utilize
it you must use IDENTICAL matched pairs of RAM. Using non-identical RAM sticks will allow only single channel RAM useage. -- DaveW "msim" wrote in message ... Corollary: Are all memory chips therefore dual channel compatible? Another question: How can one tell whether RAM is being accessed at a dual channel speed? Thanks! |
#4
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"msim" wrote in message
... Corollary: Are all memory chips therefore dual channel compatible? Another question: How can one tell whether RAM is being accessed at a dual channel speed? Thanks! You can tell if you are running in dual channel mode as it tells you in the POST messages as the PC boots. SteveH |
#5
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Thank you all! That works.
It is of course interesting how they market memory modules as dual channel! Perhaps the marketers are refering to the modules being perfectly matched and so on. "SteveH" wrote in message . uk... "msim" wrote in message ... Corollary: Are all memory chips therefore dual channel compatible? Another question: How can one tell whether RAM is being accessed at a dual channel speed? Thanks! You can tell if you are running in dual channel mode as it tells you in the POST messages as the PC boots. SteveH |
#6
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On Mon, 25 Jul 2005 17:07:29 -0400, msim wrote:
Corollary: Are all memory chips therefore dual channel compatible? Another question: How can one tell whether RAM is being accessed at a dual channel speed? Thanks! There are no dual channel DDR memory chips. Dual channel memory systems use pairs of DIMMs. |
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