dual channel running at lower speeds

I have 1 Gb DDR2 OCZ gold plated running at 800 Mhz speed. I got an additional 1 GB DDR2 Kingmax stick also running at 800 Mhz speed. My question is why are they running at 667 Mhz when in Dual Channel Mode (interleaved) ? When testing them individually, they show 800 Mhz clock speed, but in dual channel they run at 667 Mhz. I don't like this issue, what should I do ?

 

I got it - the Auto option in BIOS was setting the frequency at 667 and I changed it to 800 and I got 20 % boost in windows experience index (Win 7 32 bit) - from 4,5 to 5,5.

 

Well done fixing your problem, though I'm puzzled why the auto setting would have them set at 667.