sirrobin4ever

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Dec 8, 2006
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Does anyone know whether it is possible to run in Dual Channel mode with an Athlon 64 X2 processor using three ram sticks?

Here's what I have:
Athlon 64 X2 3800+ Skt. 939
2x Geil DDR400 256mb sticks
1x generic DDR400 512 mb stick
MSI K8N Neo2


Can I run dual channel using the 512 stick on one channel and the two 256mb sticks on the other channel, or not? My old Athlon XP used to work this way, but I'm not sure whether Athlon 64's work this way.

Thanks
 

tseska69

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I am pretty sure you need to have an even number of sticks for it work in dual channel mode. All 4 sticks should be identical, too.

Additionally, at least with my MSI board, it advises NOT to use just 3 sticks.
 

sirrobin4ever

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You can't run in dual channel mode with 3 DIMMs.

You could with the old Athlon XP's...
As long as the two channels have the same capacity installed, it would run in dual channel.
Are you sure that the Athlon 64's will NOT work that way?

It is my opinion that 2 DIMMs are more stable than 4.

I agree with your opinion.
 

Mondoman

Splendid
It depends on the memory controller. Newer Intel chipsets DO support this. Your older AthlonXP system presumably had a chipset that supported this. However, socket 939 and AM2 Athlon 64s have the memory controller integrated into the CPU; I don't know if these memory controllers support dual channel mode with "same total per channel, even if different DIMM sizes"; I suspect they don't.