Well an Athlon 4000 + X2 2.1 GHz to 2.5GHz.

With the 200-238 MHz FSB and a multiplier of 10.5. That much is so good even I have total stability in all the tests. But my question is with the Rams, as I see in CPU-z DRAM Frequency has reached 357.1 MHz (357 * 2 = 714), and the Rams are my 667MHz.

As I said you should manually to work at 667MHz and these could raise the FSB without problems. I did this in the BIOS, leave them in 667, but even so the CPU-Z and Everest tell me that these are at 357.1MHz. The only program that tells me otherwise and tells me that 333 are working on the CBI (Central Brain Identifier)