Installation amounts to popping the modules into the proper memory slots. For those unfamiliar with Intel P55 (and X58) motherboards, the proper slots are the slot closest to the forward edge of the motherboard, and the second slot closest to the CPU. These are the opposite slots used in LGA 775 Intel motherboards, and can cause some confusion. So far, every P55 and X58 board I’ve seen has the proper memory slots in a lighter color than the other slots.
If you are using all four memory slots, I highly recommend using only 1 pair of modules when starting the rig for the first time.
As with all high performance memory, the memory may boot up at lower than advertised speed and timings, and the tested speed and timings must be set in the BIOS. This is so that if there are other settings that need to be made to accommodate the advertised specs, the system will POST so those settings can be made. In this case the memory did boot at DDR3-1333, but at timings of 9-9-9-24, and at 1.5v. A quick trip to the BIOS got me the correct timings and Vdimm. Afterward, I ran Memtest86+ version 4.0 for a couple of hours, the memory passed with no errors.
I spent a considerable amount of time experimenting with the OCZ Platinum DDR3-1333 just to see what I could get out of the speed and timings. It is much easier with the P55 chipset, no voltage experimentation is necessary since the max is 1.65v.
The first thing I tried to do is tighten the timings at the advertised DDR3-1333. I was able to get down to DDR3-1333 6-7-7-24.
Next I raised the memory speed as far as I could with the timings still at 7-7-7-20. I raised the memory speed to a stable DDR3-1390.
Finally I went for a max overclock while keeping the timings as tight as I could. I was satisfied with a clock of DDR3-1615 9-9-9-24.