PQI Memory PC-3200 Turbo Memory
 

"When it came to overclocking the PQI PC-3200 Turbo memory we found the BEST
overclock to be 542MHz DDR (2.5-3-3-7). This gave us a solid 142MHz increase
over default and roughly a 1,400 MB/sec increase in memory bandwidth
performance..."

Direct Link= http://www.legitreviews.com/reviews/pqi3200/