Better ram settings: timing at 2-2-2-5 or 2-3-3-5 with Turbo setting is BIOS

[theNEOone]

I'm running a Corsair XMS pc2700 module on an asus a7v333. A particular setting in the BIOS allows me to set my ram performance to either optimal or turbo. With my current timing at 2-2-2-5, I can't boot into windows with the turbo setting. Corsair specifies the timing capabilty of the module as being 2-3-3-5, so I imagine that at this setting I'd be able to enable Turbo performance. Which config will allow me to squeeze the most out of my system??

[remember, either 2-2-2-5 without the turbo setting or 2-3-3-5 with turbo] .