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Overclocking

I was able to overclock the OCZ Platinum DDR3 PC3-14400 dual channel kit by another 68MHz - I know, its not much, but we have to remember that these modules are essentially overclocked from the factory, and getting an extra 3.78% speed out of such high speed modules is not bad.

I was pleased that I could reach 1800MHz at the stock settings (including 1.95V for vDIMM); and I was not at all surprised that I had to bump some voltages to reach 1868MHz. To reach the overclocked results, I had to use the following settings:

• 1.5V Vcore
• 1.95V vDIMM
• 1.4V vFSB
• 1.55V NB

I tried higher voltages, but I was unable to get the memory speed higher with satisfactory stability. Perhaps upcoming X38 chipset based boards will let me go higher? 

Conclusion

OCZ has always been one of the forerunners for producing the really high end modules out there.  It's no surprise then that they would be one of the early companies to offer 1800MHz DDR3, and I was very pleased that the OCZ DDR3-1800 modules ran at 1800MHz without any tweaking being required - it worked the first time I tried it at its specified speed.  So far Corsair, Super Talent, and OCZ have modules at these really high speeds, and of the three we've tested two - the OCZ was definitely the more reliable of the two.

There is no guarantee that it will reach that speed on other motherboards, but the fact that it painlessly reached it on our Asus P5K3 Deluxe WiFi test bench is a very good sign; as (unfortunately) a lot of high-spec modules are only validated on a specific motherboard.  The last super highend DDR3 memory module we tested was the Super Talent DDR3-1866, which for example gave us some headaches on a couple of boards, but did run at spec on the ASUS Blitz.

If you are looking for a high-performance DDR3 module, you can't go wrong with the OCZ DDR3 PC3-14400.