Dual channel @ 800 or single channel @ 1066?

domonas

Distinguished
Oct 31, 2009
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18,510
So I have an ASUS M3A78 Pro mobo with a Phenom 9950BE and have OCZ Platinum 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 running Win7 64 bit Professional. I have the RAM in dual channel mode but it runs at 800 MHz. Looking at the manual, I noticed

"Due to AMD CPU limitation, DDR2 1066 is supported by AM2+ CPU for one DIMM per channel only"

So basically, if I'm reading this right, I can run my RAM as dual channel at 800 MHz, or I can put them to run in single channel @ 1066. So which is better?

Thanks for your inputs!
 

tstng

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Oct 12, 2009
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Dual Channel 800 is better. I have a PII X2 550 BE and the memory scores I get are amazing, no OC. Dual Channel 1066 would be even better but if it only runs single, I'd stick with 800 dual.