The TT big water is a good entry level cooling system. About 6-7ºC cooler than the Zalman 7000al/cu. I can't tell you exact temps still since I don't trust my MoBo. I'm going to buy a thermal sensor in a few days and report back 😉. From what I can see in the mobo readings the delta between the case and the CPU is about 6-7ºC while idling and 14@ full load. Nice results. My comp is now OC'd to 2250Mhz@1,5V (week 51 🙁 ) but I'm changing it soon. When it was @2350Mhz 1,6V idle was the same and load temps had 17ºC delta with the case. Nice If you ask me, just better than air and good looking (I think 😀), worth the 100? I spent. Also installation was very easy and even the coolant came with the kit.
Cheers