I went from 16 to 32 a couple of months ago, keeping the same type and speed of RAM. I didn't have any gains in mind other than DCS and other programmes are recommending 32 gig as the optimal amount to have when running their stuff under load so I did it for that because I like to be optimal with my hardware and give it room to manoeuvre. After having it in the pooter and using it a lot since installation I only have a couple of observations because there has been little to observe:
No noticeable increase in load times, visuals, handling either to BoS or DCS or any programme. On my pooter '46 and BoS are quick loaders and DCS is usually slow. BoS settings are ultra whilst DCS is a mixture of high and medium settings, these giving me frame rates in the 90s and low 100s
the pooter feels more stable in general, feeling smoother and I don't get the occasional 'overclocking warning' from my Asus X99 motherboard I used to have with 16 gig. This was cleared by going into the bios and changing the RAM setting from XMP back to auto, something it did on it's own sometimes after the pooter had been under load ie. playing 46, BoS or DCS for a few hours.
My view is that whilst I can't see any noticeable gains I am happy that, along with my other hardware, I have more than enough RAM to cope with anything my programmes ask of it for a few years to come and that everything is working better in the background.
To give clarity, my other hardware, mostly two years plus old, is:
Asus X99-A motherboard
Intel i7 5720 running at 3.3ghz
32 gig of Corsair 3000 MHz Vengeance RAM
850 watt Corsair power supply
2 x asus 1070gtx FTW in SLI
Creative Fatality soundcard
Asus 27" 2560 x 1440 144hz monitor with Gsync and secondary BenQ 19" monitor
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