The 6850 is my Son's, as he upgraded to a GTX560ti. This would be the 1st time I actually borrow hardware from him(normally the other way around...MUHAHAHA). Let's see if he will let me flash it to a HD6870. Hope to have it within the week. I changed my setting and my buffer to .5 days. Once I start to get some HCC work, I will lock in only HCC. how large do you set the cache?