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The Virus
12-06-2004, 11:12 PM
How come this motherboard can't run ddr400 with all 4 dimms populated?

It auto sets down to 333mhz even tho i have it set to run at ddr400.

I have 2x512mb and 2x256mb for a total of 1.5gb. This sucks, i dont wanna

run my ram at sucky 166fsb with my FX55. GRRRRRR... I tried everything to

make it work but its just not happenening. 2t doesnt do anything and 1.5gb

passes Memtest also. I honestly thought this mobo is even capable of 4x512

but at 2t which i honestly dont care. I'm dissapointed.
conrad.maranan
12-06-2004, 11:18 PM
Just think of 333MHz as an automatically applied 5/6 divider. It's not the end of the world if you really want to use four modules. What CPU are you using? What's your maximum CPU overclock?
The Virus
12-06-2004, 11:31 PM
Just think of 333MHz as an automatically applied 5/6 divider. It's not the end of the world if you really want to use four modules. What CPU are you using? What's your maximum CPU overclock?

FX55 and i have it running 14x200fsb prime stable at 1.6v.

Phuck it, just read the manual and it appears that running 4 double sided sticks it auto-sets to 333mhz and not beyond. This sucks because in Anadtech review he only wrote that running 4x512 needed to be set at 2t and never mentioned about the divided being applied.
conrad.maranan
12-06-2004, 11:50 PM
Try 10x280MHz. Running memory with a 5/6 divider should give you 233.3MHz. I don't know what your memory is stable at, but 233MHz with all 4 DIMMS populated is pretty good.
The Virus
12-06-2004, 11:55 PM
Try 10x280MHz. Running memory with a 5/6 divider should give you 233.3MHz. I don't know what your memory is stable at, but 233MHz with all 4 DIMMS populated is pretty good.


2x512 is Corsair pc3500c2 (bh5) and 2x256 Ocz platinum . I dont like going over 200fsb for stability reasons. 10x? would give me 200mhz on ram???
conrad.maranan
12-06-2004, 11:57 PM
10x280MHz would still yield you 2800MHz, which is what you're running stable. HTT at 280MHz would automatically drop your RAM down to around 233MHz because all four DIMMs are populated.

EDIT
If you really want your memory running 200MHz, try 11x240MHz (2640MHz).
The Virus
12-06-2004, 11:59 PM
10x280MHz would still yield you 2800MHz, which is what you're running stable. HTT at 280MHz would automatically drop your RAM down to around 233MHz because all four DIMMs are populated.

Yeahh, but i dont think my ram can do 233fsb, hence 4 modules being used at the same time.

How about 11x240???? 240 with 5/6 divider should give me exactly 200fsb right?
The Virus
12-07-2004, 12:02 AM
Great, same thinking. Should i set my Hyper transport to 3x or 4x?
conrad.maranan
12-07-2004, 12:03 AM
4x should work if you're running HTT at 240MHz. As long as the final product comes out to less than 1000MHz.

Give it a shot and good luck! :toast:
The Virus
12-07-2004, 12:04 AM
4x should work if you're running HTT at 240MHz. As long as the final product comes out to less than 1000MHz.

Give it a shot and good luck! :toast:

Ok great,, be back to report the results. Thanks.
The Virus
12-07-2004, 01:12 AM
Ok, i booted directly to Memtest after setting 11x240htt and 4x hyper transport. Memtest was a success without any errors. Now when i booted to windows i noticed that my memory is running 188mhz, hows that possible?
conrad.maranan
12-07-2004, 01:16 AM
I'll have the answer for you in a minute. Please stand by...
The Virus
12-07-2004, 01:19 AM
I'll have the answer for you in a minute. Please stand by...

I just want to note that when i boot the pc i can see 200mhz memory freq.
This is weird.
conrad.maranan
12-07-2004, 01:28 AM
200MHz is the theoretical frequency, or what it should be based on the ratio of 5/6 (240 divided by 6 equals 40, and 40 multiplied by 5 equals 200). This will always hold true when the CPU multiplier is 5, 10, 15, 20, and so on. Once you plug in a different value, the rules change a bit. Check out this table (http://xtremesystems.org/forums/showthread.php?t=41595).

Your CPU still has some headroom, since you've downclocked in an effort to attain 200MHz for the memory. You can still bump up your HTT a few notches to give your memory 200MHz.
The Virus
12-07-2004, 01:35 AM
200MHz is the theoretical frequency, or what it should be based on the ratio of 5/6 (240 divided by 6 equals 40, and 40 multiplied by 5 equals 200). This will always hold true when the CPU multiplier is 5, 10, 15, 20, and so on. Once you plug in a different value, the rules change a bit. Check out this table (http://xtremesystems.org/forums/showthread.php?t=41595).

Your CPU still has some headroom, since you've downclocked in an effort to attain 200MHz for the memory. You can still bump up your HTT a few notches to give your memory 200MHz.

Ohh i see, i actually thought about that table but i didnt think it would affect multi 11 but only half multi like 11.5 and so on. Great man, you've helped me enuff,,,,,,,,Now i got one more question, if i set 1t in bios will the pc boot or hang using all dimms?? I dont feel like clearing my cmos because the sound card is blocking it.
conrad.maranan
12-07-2004, 01:36 AM
Good question. Unfortunately, I don't have a good answer because I've never had four modules in place at one time. There's only one way to find out. :D
The Virus
12-07-2004, 01:38 AM
Good question. Unfortunately, I don't have a good answer because I've never had four modules in place at one time. There's only one way to find out. :D


According to Anandtech, all 939 pin mobos needed to be set at 2t using 4x512 modules. However, if u noticed im using 2x512 and 2x256 so u never know...grrrr ...im scared tho...dont feel like taking out my sound card to clear the cmos if it hangs.

I'll try that tomorrow cuz im mad tired now. Thanks again for everything, i own you one. :toast: