New memory problem - AV8, with certain combinations of ddr sticks...

Soldato
Joined
4 Jul 2004
Posts
2,647
Location
aberdeen
hello
i have four memory sticks
1gb corsair value select (ddr 400)
512 mb corsair value select (ddr 400)
512 twinmos (ddr 400)
and 256 mb corsair value select (ddr 266) - this is only being used to help me test the system

anyway, i have an av8 socket 939 mobo. it has four ddr slots:
Code:
1 		2 		3 		4

I had the two 512mb's in slots 1 and 2:
Code:
512		512		/		/

it worked

but i can't get 512 + 512 + 1gb to work. the best ive got is:
Code:
1gb		/		512 (corsair)		/

if i do other combinations (even with the 256 stick) it just bleeps and nothing is displayed on the screen.

here is a "table" of some of my "results". none worked apart from 2:

512twn = twinmos
512cor = corsair value select
Code:
1gb		512twn		/		/		nope
1gb		/		/		/		nope
1gb		/		512cor		/		YES!
1gb		/		512cor		512twn		nope
1gb		256		512cor		512twn		nope
/		256		512cor		512twn		nope 
/		/		512cor		512twn		YES! (running it now)
512cor		512twn		/		/		YES!

ANY IDEAS?
I thought maybe its to dowith dual channel. i cant find an option in bios to turn dual channel off though...
cheers
 
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