They are all the same basic card. The first one is at stock core and memory speeds. The second has a mild overclock and the third has a larger overclock. Now, the overclocked ones do provide greater performance over the stock units, but at a cost. The only problem with those overclocked cards, is that you can do the same overclocks on your own without worries because overclocking is covered under the eVGA warranty. So are those cards worth the money? Depends on whether you want to overclock it yourself.