Dual channel setup with 2x533 and 2x800

Abit Ab9 pro motherboard
July 17, 2010 at 19:46:08
Specs: Linux i686
Hello,
I have 2 1G modules @ 533 and 2 2G @ 800.
I would like to know the best setup for maximum dual channel speed.
Thank you

See More: Dual channel setup with 2x533 and 2x800

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#1
July 18, 2010 at 07:12:07
You should be asking in the hardware forum.

Since you're mixing RAM speeds, ALL the RAM will automatically run at the slower speed, which will be 266MHz (DDR2-533). That may or may not be the speed you want, it would depend on which CPU you have. Read your manual on how the RAM sticks should be installed. And make sure to manually configure the memory settings in the BIOS.


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#2
July 18, 2010 at 15:40:06
The manual mentions two configurations:

Channel A Channel B
1- 1G 2G 1G 2G
or
2- 1G 1G 2G 2G

My question is which is the fastest option. Is there a difference?
Thank you


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#3
July 18, 2010 at 20:20:55
You haven't listed your CPU or your motherboard so I have no idea what is the best RAM speed for your system.

I assume you're asking about an ABIT AB9 Pro motherboard? And I believe it has 2 orange slots & 2 green slots? To enable dual channel mode using all 4 sticks, the RAM should be installed like so:

orange - 1GB
green - 2GB
orange - 1GB
green - 2GB

The speed the RAM should be run at depends on the CPU. If you have an 800MHz FSB Pentium dual core or Core 2 Duo, the RAM should be run at 400MHz. If you have an 800MHz FSB Celeron, P4 or Pentium D, the RAM should be run at 533MHz. If you have a 1066MHz Pentium dual core, Core 2 Duo or Core 2 Quad, it should be run at 533MHz.


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