I've been getting a number of questions lately about some of the Thermaltake Volcano coolers. To make things easy for you, Overclocker Cafe has posted a review of the Thermaltake Volcano Lineup. They take a look at the Volcano 5, 6Cu, and 6Cu+. here's a snip:
"If you are willing to trade some performance for lower sound volume, the Volcano 6Cu is a very good choice. The load temps were only 1.7 degree Celsius off that of the 6Cu+. While at the same time you lose 8 dBA. For those folks impervious to the Delta whine, the higher end performance the Volcano 6CU+ is a winner. The 6Cu+ performs on the same level as the Vantec CCK and it only costs two-thirds the price. I like the idea of a $22 heatsink as I'm sure many of you will."