http://www.kingston.com/hyperx/products/khx_ddr2.a sp
Total kit capacity is 4GB (4096MB). Each module pair has been tested to
run at DDR2- 1066MHz at a latency timing of 5-5-5-15 at 2.2V. The SPD is programmed to JEDEC
standard latency 800Mhz timing of 5-5-5-18 at 1.8V.