Kingston HyperX T1 Series DDR2-8500 2 x 2GB Review
 

Overclocking the Kingston HyperX or any memory for that fact, takes time and patience. Since they are 1066MHz at 5-5-5-15, I started using the straps on the Gigabyte X48 board to manipulate the memory. I knew from past experience with DDR2-8500 memory I should be able to reach at least 1100MHz, so I found a strap that was at 1111MHz and started there with the timings still at 5-5-5-15. I was only able to get halfway through Memtest86+ with this setup, so I loosened the timings from 5-5-5-15 to 5-5-5-16 and still no joy. However, at 5-5-5-17 they were good and passed Memtest with no errors at all. I then tried to push the CPU speed to increase my memory speeds via the strapping but at 5-5-5-17 I was getting errors again. I did place the timings higher to 5-5-5-18 with the memory at 1123MHz but the benchmark scores were lower than at 1111MHz with timings of 5-5-5-17, so that is where I ran the overclocks, since the performance was better.

http://www.overclockersclub.com/reviews/hyperx8500/