Hi there! So currently I'm running two 500 meg sticks of RAM in my PC but I've upgraded it slightly (changed the O.S to 64 bit windows 10) but now I need to buy some new RAM to be able to run windows 10 a lil more smoothly, I was wondering whether a 2GB stick of DDR2 clocked at 667mhz (low density) will work, any and all help would be highly appreciated, thanks!