no one needs DDR5 for gaming and the DDR5 around now will be considered crap by time a game comes out that warrants ddr5 anywayYou said you wanted 'future proof' and DDR4 is technically end of line, but it doesn't matter really, just buy whatever suits your system. Like said above though, this is all hypotheticals, so much new tech is due in the autumn it would be best to come back when you're ready to build.