So I just got my Maximum PC April issue where they talk about water cooling. One part of the test they talk about tubing size. Quoting the article, "Tubing is everything, 3/8-inch-diameter tubes spiked our temperatures on 100 percent CPU use to an average of 81 C and a maximum of 83.5 C. The same cooling setup using 1/2-inch tubing hit an average of 73 C with a maximum of 75.25 C. The more fluid you can move over your heat exchanger, the cooler the average temperature that fluid will be that's why 1/2 inch tubing wins."
I didn't think that made such a big difference but 8 C is quite a bit considering that a if a CPU block was 8 C better everyone would use it over another. You will have to read the article to see the test equipment. What do you guys think about it? Should I use 1/2 over 3/8 inch? I already have 3/8 tubing and barbs.