SE ' s been upgraded to a 64 bit engine . Same basic engine for the most part , and it doesn ' t really affect the base game except that now it can be run in 64 bit mode which is really gonna mean fuckall to the average user , but it could potentially , theoretically , conceivably affect mods that are developed down the line , allowing for smoother processing or possibly greater complexitycapabilities . As far as differences between the PC and console versions ? Not a lot of difference on the practical front , for end users except that PS 4 mods cannot add any new assets or resources to the game . Sony ' s gotten kind of . paranoid . I ' d definitely go with the Steam version of SE over the PS 4 version . Between Steam and Xbox , it ' s just a matter of preference . If you had Steam Oldrim prior to SE ' s launch , you should actually have gotten SE for free . If not , and you ' re picking between the two now , I ' d say it ' s purely a matter of preference . SE ' s prettier than basic vanilla Skyrim , but Oldrim can be made just as pretty or nearly so with graphics mods and Oldrim still has all the mods . Many mods are not yet ported to SE because the Skyrim Script Extender has yet to be ported to it , and a lot of mods require it to function . The development team for the Script Extender are working to port it , however , and many of those mods will eventually make it to SE . ' course , there are also some that won ' t because the authors have decided they don ' t want to port their mods over .