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dual channel even on?

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May 11, 2006 9:21:15 PM

hey guys,
~im not a comp wizz so mind my language~
i have an asus a8ngx motherboard, which i think supports dual channel, i have 2x 512mb ddr400, which did not come in a kit, i just bought them single,
but they are both the same. i opened up my comp and they are installed in the first and 3rd slots.

how can i tell if my ram is running on dual channel or not?

More about : dual channel

May 11, 2006 9:38:43 PM

Download Cpuz and check under memory
May 11, 2006 10:29:38 PM

They need to be in slots 1 and 2 or 3 and 4 to work in dual channel.

I've never seen a 'dual channel on/off' option on any BIOS, and others have said you can't switch it on or off, just move the sticks to the correct slots, so I'd be inclined to say you can't switch it on and off.

If you have 4 DIMM slots, you probably have dual-channel, if you have 3, you don't. Just move the stick in slot 3 to slot 2 and you'll be running in dual channel, if you have it.
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May 11, 2006 10:59:11 PM

thx for ur replies.
i got 4 dimm slots, if i move the stick in slot 3 to slot 2, my comp wont start, and all u hear is a really long beep, so i think il just leave it in slot 3
May 12, 2006 8:20:43 AM

Then you can't run dual channel, and there's something wrong with your board and/or RAM.

Run Memtest86 (google it) for a few hours and check your memory for errors then post back.
May 12, 2006 9:20:31 AM

i don't know about amd but on intel boards the dual channel is in 1 and 3 to be dual channel and 2 and 4 , if its on 1 and 2 or 1 2 and 3 slots it's not dual channel, but i think your memory is in dual channel, it's usually informed in post' if you can't see post because any fancy asus logo showing up just push tab and you will see, usually it informes you of you'r ram speed if it's to fast jus push the pause break and th post will stop, to resume just push return or enter or any other key :D 
May 12, 2006 9:35:53 AM

Are you sure that's the model number of your mobo? I can't find it on the Asus website. If you post the correct model number it'll take less than a minute to find out the dual channel capabilities.
May 12, 2006 3:55:57 PM

Picky about the RAM? I thought Asus AMD boards were just picky about PSUs!

It could be, but if it works in slots 1+3, but not 1+2 what would the problem be?
May 12, 2006 4:26:33 PM

Quote:
Picky about the RAM? I thought Asus AMD boards were just picky about PSUs!

It could be, but if it works in slots 1+3, but not 1+2 what would the problem be?






You were absolutely correct :-D

1+2 = Dual Channel

1+3 = Single Channel


Now about being picky... it varies.

I have an ASUS board ( A8V-DLX with the hated K8T800Pro chipset ) which refuses to POST with my Corsair XMS PC3200C2 but works fine with Corsair Value RAM PC3200.

A virtually identical board from another MFG with the same K8T800Pro chipset works just fine with the same RAM.




Regarding the OP's issue, I suspect the modules are not really identical.
May 12, 2006 4:54:44 PM

Linux, I am not sure if text on manual is correct. I have built lotta system with Asus motherboard, to run duel channel you have to install both of them 1 and 3 or 2 and 4, the slot's color is the same inorder to run duel channel. Blue - Blue or Black - Black.
May 12, 2006 5:16:47 PM

Yes but if it's 1 & 2 then slot 1 and 2 would be black or blue. All the asus motherboards I own, they distinguish duel channel by the slot color. Best way to find out is ask him to test it out.
May 12, 2006 5:18:11 PM

Quote:
Linux, I am not sure if text on manual is correct. I have built lotta system with Asus motherboard, to run duel channel you have to install both of them 1 and 3 or 2 and 4, the slot's color is the same inorder to run duel channel. Blue - Blue or Black - Black.



These are the same:






1-2
3-4

are the dual channel pairs [ of course real geeks start counting at 0 ;-) ]

Tyan boards use the same color pattern too for the most part (Blue / Black ).
May 16, 2006 3:51:09 PM

note my 2 cents i've installed that board and for running dual channel like it did gos for A1+B1=dual channel A2+B2=dual channel A1+A2=one channel B1+B2=One chanel so my conclusion A1+B1 two channels runnig here ;)  just me thinking they use the color schem to diferenciate them the 2 dimms wich should be using dual channel.
May 16, 2006 4:12:35 PM

Yes that's how it is, but they don't believe me :twisted:
May 16, 2006 4:13:31 PM

Yes that's how it is, but they don't believe me :twisted:
May 16, 2006 4:16:00 PM

the post on gives information if it's dual channel or not but the best way to check, benchmark it sandra on one way then on another way, but dual channel works just like the earli rimms it has to be in pairs in alternate channels ;)  their lost ;) 
May 16, 2006 4:19:24 PM

the one way to check it's with the bios post it gives that info, but you can always try to go with some bencheis with sandra and see wich way it's faster or with everst and see what info he gives, because dual channel it works like the earlie rimms it has to be in pairs and on in each channel or else in rimm it won't work and in ddr dual' it's not dual it's single because dual channel = 2 channels if you are putting all in the first channel it's not dual channel it's single channel
May 16, 2006 4:58:08 PM

I agree with you. To run dual channel you will need to populate slot A1 and B1. I have an A8N-E and that is the way it works with that board. As to tell if you are running dual channel or not, it will tell you when it posts. On the A8N-E, it will run through the memory check. After that, states the ram speed and wether or not it is running in dual channel or single channel.
May 16, 2006 6:23:51 PM

Yeah, even my crappy ECS board tells me during startup whether or not its running in dual channel or not. It tells me how much memory I have, the clock speed, and how wide of a bus its running (128bit for dual channel). Of course on this board I have to use slots 1 and 2 not 1 and 3 but oh well. You can also use Everest to check if you're running dual channel. It'll tell you all kinds of other nifty stuff too.

-mcg
May 17, 2006 7:19:17 PM

I don't know about your ASUS board, but my ABIT Motherboard displays in the BIOS during boot up that my memory is running in Dual Channel Mode. Next time you boot up look and see if about the time your memory goes throught the checking process it also displays that memory is running in Single channel or Dual channel mode.
!