2500k is only slightly more powerful than the 950 as the link provided by mickyflinn shows, but rather importantly also overclocks a lot better. With your existing overclock you're going to see a downgrade in performance, so keep the 2500k in your primary rig.
Don't the X58 boards command ridiculously high resale values too?
looking at the prices on ebay for the mobo i think i may just sell it and put it towards an upgrage for my pc