Both boards have the exact same layout. Since I previously trimmed the screen for the Deluxe, I just popped the Twinplex in the Premium board and it fit perfectly. I was looking at the "BIX" but I wanted to stay as "SLIM" as possible so I could explore the possibility of an internal or a better looking external mount. Both the BIX and the BIP outperform what I am currently using according to Watercoolplanet.de. Going with the BIP is win-win b/c I get a better looking solution should I go with an external mount and it outperforms the HTF3. I have the 4800+ and I love it. I was running one version of Prime95 and 3DMark05 just out of curiosity and still scored over 10,200. The X2 is nice. It will do up to 2600 at the stock voltage of 1.35 and I've had it up to 2800 at 1.55v. It gets warm at that voltage so I've been playing with it at 2.6GHz for now.