DDR2 800Mhz with Phenom CPU

[Dusan_11]

I recently decided to buy new CPU for GA-M56S-S3 mobo (AM2 socket), but mobo is supporting DDR2 memories up to 800 MHz and I want to buy Phenom(AM2+ socket) x3 or x4 CPU which works with 1066 Mhz and 1600 Mhz.
So my question is can I run Phenom x3 or x4 on this mobo or I will need to buy new mobo first?
Also, can I run DDR2 with AM3 CPU?

 

[ikaz]

Per the Gigabyte website the MB only support up too 800 MHZ take a look (not sure if your have rev1)

https://www.gigabyte.com/Motherboard/GA-M56S-S3-rev-1x#ov

 

[Dusan_11]

Thanks for answering, but can ram/memory controller for CPU downgrade to 800 Mhz that is what I am wondering?
Also, does every AM2+ CPU works with more than 800 Mhz?