I am looking for a new Windows 10 desktop PC. My primary computer tasks involve writing in Word, some work in Excel, some low graphics-intensive software, and internet use (email, web surfing). For this kind of usage, would I do better with more Ram (12 GB, DDR4, 2666MHz) or with 8 GB Ram plus 16 GB Intel integrated cache (Optane Memory)? Both systems would come with 8th Generation Intel Core i5-8400 processor, Windows 10 Home 64 bit English, 3.5" 1 TB 7200 rpm Hard Drive, Intel® UHD Graphics 630 and DVD-RW Drive. Thanks for any help with this.