Question about ASUS K8N-DL Motherboard

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Asus K8N-dl - second processor present but not running...

I have dual opteron 246s' installed on my K8N-dl motherboard, but the second proc is not running, although I know both work... I am currently not running matching pairs of ECC in the dimms labeled A1- A2, b1 - B2, A3 - b3. IS this why? The machine boots using only one proc and a single installed dim of micron, 1 gig, pc3200, ecc registered mem. Do I need the A3 and B3 slots filled with matching pairs before the second proc will come on? The board works fine and I'm using it to post this. Thanks for any suggestions; please respond if you have a solution!

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Re: Asus K8N-dl - second processor present but not...

Actually your 2nd cpu needs a memory to run. You need to add a memory to slot A3. Slot A3 and B3 are memory slots for 2nd cpu.

Posted on Nov 27, 2007

Re: Asus K8N-dl - second processor present but not...

I fgured out the main issue; that is, I was not using a 8 pin mobo power connector... I love the motherboard, paid $165 for it on ebay; when it retails around 300 - 400. I have never since seen another like it on ebay. A real find and a great mobo. I recommend the Asus K8N-DL, dual opteron Mobo to anyone running dual opteros.

Posted on Aug 06, 2007

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Re: Asus K8N-dl - second processor present but not...

Hi, Mistyman here. All Asus mother boards that have dual channel RAM slot must have equal ram in each slot. In most cases the paired slots are matched by color for easy ID, some are identified by a printed ID on the mother board. With your board you will have to have run all of your RAM for the one CPU. If you have only one stick this must be in slot one. If you are using two sticks then utilise the dual chanel system that ASUS have and use A1 & A3. To activate the second CPU you will need to install matching sticks of RAM in the B slots. both cpu's will need to have the value of RAM to work together properly. CPU one = slot A for RAM CPU two = Slot B for RAM. Goodluck, the ASUS boards are a value product.

Posted on Aug 04, 2007

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1 Answer

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Hi, you can download a manual and drivers here:

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I always recomend to read the manual because there is some
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It will not support a DDR2 memory but it will support AMD 64 x2 4000 CPU see specs below..btw your usin socket 939

Memory Supported:
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Sounds to me like you have a bad board/socket 2. Is there a setting in the BIOS to enable the second socket? Only use 1 stick of known good RAM till ya get the problem solved.

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