Simply put, the CORSAIR XMS are faster than the patriots. They run at a higher frequency and have the same timings.
edit: Next best are the tracers, they overclock well, and have tighter timings than the CORSAIRS. However if you were to overclock the tracers to the same frequency as the CORSAIRS, you would probably need to loosen the timings to 9-9-9-24. However who's not to say the CORSAIRS won't overclock as well
Far2Paranoid: Knew this guy in HS
Far2Paranoid: Built a box with 2x 350Mhz Pentium2, back in '98
Far2Paranoid: The trick was, filled his bathtub w/ glycerin
Far2Paranoid: Took apart a mini-fridge and used the coils to cool the glycerin to ~40F
Far2Paranoid: Then sunk the box so he could OC the CPUs to 1.3Ghz
Far2Paranoid: Coolest stuff I've ever seen.
AlbinoChpmnk: If this was sitting in his tub, how did he shower?
Far2Paranoid: After what I just said, what makes you think he showered?