I may use it, but if you read my posts after the Sony conference, you'd know I'm a huge (the biggest in the forum) hater of the Remote Play feature. I think this will kill multiplats on the Vita and hurt the console big time (devs won't care to port games and just tell us to stream them from the PS4. It's something that's already happening, as I got such a reply from a dev on the PS Blog when I complained about the lack of a Vita version of the game). I want Cross Controls, not Remote Play.

We'll see how much it uses. If the Wii U OS uses 1 GB, this stuff on PS4 can easily eat up to 3-4 GB.

Exactly, SONY is making gamers pay more for 4 GB of GDDR5 RAM for things that doesn't improve the game capabilties. Of course, it is good to have more features but everything has a limit. My reasoning is that SONY realize that with all the social stuff they were giving to the PS4 8 GB of GDDR3 wouldn't be enough so they changed for 4GB  GDDR5, but after some tests they realized it was not enough so they add another 4GB for the operating system alone. 

I am not against all those features, for some people they are good, but for others that doesn't have a good internet connection they won't matter. And Sony is making them pay more for something that it is not valuable for most people that have a low internet connection. I always said the are not thinking about the gamer, by adding unnecessary stuff and cost.

Yet, you have absolutely no idea how much the console will cost...

You say that the added 4 GB is for the OS and background stuff going on. Leaving only 4GB for games.  Do you know how much RAM it takes for keeping a 15 minutes video in the RAM at all time? Do you know what the compression used for those video is going to be? A two hour movie in mkv is like 3GB. How much do you think 15 minutes will take? Somewhere around 400MB. Now, since there's a chip handling this process in the background, I greatly doubt more than a single GB will be required for that feature alone. 

Now, you take the rest of the OS... The PS3's OS needed less than 100MB of the PS3's system RAM. Now, you're trying to make us believe that the PS4 will use a whole 4GB just because it can stream and encode a 15 minutes long video in real time? Not even Windows 7, under similar situations (video streaming, and/or encoding a 15 minute long video) takes that much RAM...

Seriously, put some thoughts into what you're saying before typing it.

The reason why they added 4GB to the PS4 is because they don't want to make the same mistake as they did with the PS3. Where the PS3's dedicated RAM struggled against the 360's shared one.

Wii U has a dedicated ARM chip for running the OS. It uses an entire 1GB for the OS. Considering that PS4 will offer much more than what Wii U offers in the OS department, I would really doubt it uses "just" 2GB of RAM to run all these functions. 3-4GBs seem more plausible.

Wii U has a dedicated ARM chip for running the OS. It uses an entire 1GB for the OS. Considering that PS4 will offer much more than what Wii U offers in the OS department, I would really doubt it uses "just" 2GB of RAM to run all these functions. 3-4GBs seem more plausible.

And let's remember that it doesn't matter how much it really uses, but how much Sony decides to reserve for it. Just like N booked 1 GB for OS, Sony may lock more than is needed at first to be able to have some space to operate later on and add some features. We'll see how much all this redundant stuff uses, I'd be crazy happy if it was just 1 GB and 7 GB was left for the devs, but I think it's not possible. 2 GB is the minimum, but I won't be surpriced if it's more. This share stuff looks like it needs a lot of extra power. What a waste :(