I just got home for work so sorry for the late reply. The temp monitoring is close enough. I could care less if it is 1C+/- myself. Remeber we are talking about roughly 30gph to roughly 60gph. I really wasn't expecting any change.
Also for a small update I am running (since 4pm yesterday)2.0Vcore 1523mhz at 145fsb on the XP1600+ and running 41C load, 30C water, 26C room. I am very happy with it for its size.
Also I must point out that Fixittt is not saying two identical blocks in copper and al will have the same results. he is saying a well designed al block will perform as well as other not so well designed copper blocks. At least that is how I read it. I made a couple identical ones (thank god for the CNC) and they where about 1C different. yeah yreah yeah that is with my half assed temp monitoring.
But I think the results would change with different flow rates ect.. As I am sure they both react different to different flow rates and what not. In any event AL does a plenty fine job. I also have a lead on a good anodizing outfit localy. Will be looking into it later this year.
Anyway carry on with the other topic if you wish. I am pretty much done with this block anyway.