They are like the GT200, I guess that every one here doesn't have an attention span nor the memory to remember the GTX 260 ever existed and that there are primarily two versions. The core 192 and the core 216 both A and B versions. 65nm and 55nm. The 65nm core 192 can be used in sli with a 55nm core 216 for the one simple fact they are still the same gpu and have the same device ID thus the option for sli. In order to gain sli function in your case you need to edit the SE to be recognized as a normal GTX 460 with out using a different bios. You will be NVbitor and NVflash to do the job but it will work.