The SPD is the wrong tab to look at if you want what the ram is running at. The memory tab is the right tab. By default, the ram will run at half the CPU FSB. If you want your 800mhz ram to run at or near 800mhz:
800 / 333 = ~2.4
Set your cpu/ram ratio to 2.4/2.5 or 1:2.5 if possible. Do memtest for stability.