www.Techradar.com/us/news/gaming/consoles/ps4-vs-xbox-720-which-is-better-1127315 preview on the two systems
this a partially copy of the p/review
Does Sony score with 8GB GDDR5 RAM?
One of the most impressive things about the PS4 specs has been its use of 8GB GDDR5 RAM.
Microsoft unveiled the Xbox One to have 8GB RAM as well, but it's DDR3 memory variety.
That may mean more to game developers in the long run as opposed to gamers themselves right now, but it's still an interesting choice for the Xbox One.
Further complicating this memory game is the fact that each console requires a portion of the RAM to run the operating system.
PS4 reserves up to 3.5GB of memory for the OS, leaving developers with 4.5GB, according to documentation. They can sometimes access an extra 1GB of "flexible" memory when it's available, but it's not guaranteed.
Xbox One's "guaranteed memory" amounts to a slightly higher 5GB for developers, as the OS takes up 3GB, which probably doesn't make up for the DDR3 memory usage for most developers.
Indie games
Here's another split decision: Sony got out in front by supporting independent game developers, attracting names like Supergiant Games, Red Barrels Studio, and Young Horses at the time of its E3 press conference.
At first, Microsoft maintained that Xbox One games would require be fronted by a publisher. That changed recently when he company did another 180, announcing that not only would it allow self-publishing, every console acts as a dev kit.
A free dev kit sounds appealing, especially when PS4 developer kits cost thousands of dollars.
Sony has the indie developer crowd right now, but such pricey technology for tomorrow's basement-run teams could decrease the company's indie following over time.