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Duel channel memory

by mopscare42 / November 5, 2007 2:01 AM PST

My son-in law wanted to add memory to his HP Vista home premium machine.He wanted to end up with 3 gig.
He had 4 512mg sticks so we removed 2 of the 512s and replaced them with 2 1 gig sticks for the toatl of 3 gigs.
Everything went fine except he lost the duel channel memory and it went back to single channel?
The memory is from the same manufacture (Kingston) and the same speed pc 3200 KVR400.
We tried every combination but could never get the 3 gig to come up duel channel.
We can remove the 2 1 gig stcks and re-install the 512s and it comes right up as duel channel.
The question we have, does duel channel really make that much difference over single channel or would the extra 1 gig of memory be better?
It is for his home/office computer but he does play Flight Simulator X on it.

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Since Vista and XP doesn't give more than 2GB to any
by R. Proffitt Forum moderator / November 5, 2007 3:00 AM PST
In reply to: Duel channel memory

One program, there is little to no gain past 2GB. Read about the /3GB BOOT.INI switch and more about your issue. Check with the machine's maker for supported configurations and if it's supported check the BIOS version.


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Thanks Bob
by mopscare42 / November 5, 2007 11:17 AM PST

I will do as you suggested
Thanks again

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(NT) What MB incl model # are you using ?
by VAPCMD / November 5, 2007 8:43 AM PST
In reply to: Duel channel memory
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by mopscare42 / November 5, 2007 11:22 AM PST

I just called my son-in-law and he said the MB was a MSI RS482M2-IL series.
Hope that helps.

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While the MB was most likely mfgd by MSI
by VAPCMD / November 6, 2007 9:47 AM PST
In reply to: MSI

it appears they mfgd it for use by another mfg or perhaps even one their own barebones PCs under another model number.

Is there a Mfg/name, series and model number associated with the PC ?
Here's what I found on the MSI site...


In the interim, I'd run the system with 2-1GB DIMMs in the slots that support DUAL CHANNEL. I will add there were systems with MBs with 4 DIMM slots where some never worked quite right with 4 DIMMs.

Sorry I can't give better news.


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by Dango517 / November 6, 2007 10:03 AM PST
In reply to: MSI

MSI web site says MSI RS482M2-IL product does not exist. Does provide this information on RAM/Kingston.


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by mopscare42 / November 6, 2007 11:02 PM PST
In reply to: says

I don't know if that is the correct MSI model as I am going by what he told me.
I do know that his computer is a HP Media center M7330N
computer and he bought it Feb 2006.

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