Patriot Memory 5600+XBLK DDR2

Being the fastest low latency DDR2 modules we have tested up to date, I have to admit that these Patriot Memory kit proved that this is the type of module you want to have installed in your gaming rig. The ability to do 3-2-2 timings at DDR667 is amazing and PDP Systems stretches their award winning XBL series into the DDR2 market. Although we maxed out at 347MHz; 3Mhz shy of the rated speed of 350MHz, it was mainly because our test setup was the barrier and I strongly believe that we could have achieved better overclocks. However, we can only confirm once we have geared up with the required motherboard.
Link: