Summary: I would not recommend to buy DDR3-1066 if you have a bunch of DDR2-800 to use instead. Chances are you are not going to notice major improvements with this motherboard.
Pros: LGA 775 cpu support with DDR2 and DDR3. Connections for legacy devices: EIDE, floppy, parallel, serial. It works with every DDR2-800 (2 x 2GB) I threw in there: PNY, G.Skill, Corsair, Mushkin. See below for DDR3. Ability to overclock is nice if your CPU can handle it.
Cons: CPU fan connector hard to reach if you have PSU power cables already connected, maybe bad engineering design. None of the DDR3-1600 (2 X 4GB) worked with this board: G.Skill, Corsair, Kingston HyperX. Apparently looking through other posts, DDR3 memory problems seem to be common.
Pros: Needed a motherboard to install an older CPU ,, I used a e8300 cpu that I had ,, , i did not want to waist money buying a newer cpu like socket 1150 or 1155 and I like the fact it uses ddr2 and ddr3 memory tried both booted right up,, ,,Worth the money, and cheap at that.,, all my computers I build ,, I always use after market cpu fans ,,I buy the cooler master ones,,
Pros: Needed a motherboard to install an older CPU for a friend who doesn't need much in the way of processing power. The addition of both DDR2/DDR3 slots is a nice feature. This motherboard is compatible with a wide range of CPUs and RAM.