DDR2 has made a fairly weak entry onto the market with underwhelming figures and poor latencies, when we first tested 533mhz on release we found it was no faster than overclocked DDR400 (with very tight latencies). So enter Corsair - one of the leading manufacturers of ram modules who are not resting on their laurels, this time they are bringing into play some exceptionally fast DDR5400 modules, which are rated at 675mhz with a CAS of 4.