Many thanks Tony. missed that memory option. so seems to be the HX1500i and the 2x 32 Gb. Will have to call PCS to enquire about the 2nd GTX 4090 to be installed in this build. Would it be simple enough for me to install myself bearing in mind I am not well clued up on the workings of PC's [ only know my way around the software I use ] If it would be simple and straight forward I would add it later on . I would also have the case size to consider might have to go to full tower.