Why is the 667MHz DDR2 RAM running at 533MHz?

[baccilus]

I just got a brand new Mobo- "ASRock ConRoe945G DVI". This Mobo supports 667 MHz RAM. I have also got 512MB*2 of DDR2 667MHz RAM. But it is running only at 533. I checked this in the BIOS. This shows choices for 400MHz but not for 667MHz. I have a feeling i will have to play around with the voltage or something in the BIOS to bring out that option. I have checked the manual and it clearly shows that option should have been there with 400 and 533.
Also i have intel 2.66 GHz 64bit processor. This has FSB of 533MHz. has this got something to do with this?
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C'mon guys, help out. I know you can think of something.
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I am waiting. Someone, somewhere has got to help me with this. C'mon.

[akshayt]

RAM is synchronized to CPU FSB. Use memory divider 667 so that RAM runs at 667 with CPU at 533.

[baccilus]

Do you think it will be beneficial? I mean, won't the Proccy bottleneck the RAM? On the other hand, i think even 1 GB of DDR2 RAM is insufficient as my system constantly uses around 200-250 MB of paging file.Why does this happen? Would this be happening if my CPU is the bottleneck?

[DukeNukem]

Originally Posted by baccilus

Do you think it will be beneficial? I mean, won't the Proccy bottleneck the RAM? On the other hand, i think even 1 GB of DDR2 RAM is insufficient as my system constantly uses around 200-250 MB of paging file.Why does this happen? Would this be happening if my CPU is the bottleneck?

what OS are u using Plus what Softwares are on autostart/Services
i mean paging file is used when your ram goes full.
1GB ddr2 is more than Suff. dissable paging file