First of all, I'd need to know what Xeon we are talking about. If it's a Quad, then I'd say it's a toss up between what you already have, and the 955/Asus mb combo. Very similar performance, with a slight edge to the 955. I wouldn't waste my money on the black ops. It's a decent board, but the bios is a bit buggy. Just my 2 cents. Honestly, if anything, I'd sell the Xeon setup and get a core i5 750 and 1156 motherboard if you're looking for a significant upgrade in performance.