Here's an interesting fact you might not know- It appears that many third-party developers were surprised when Sony announced that the PlayStation 4 would have 8GB of RAM.
According to what Just Add Water CEO Stuart Gilray told Videogamer , Sony initially delivered devkits that had only 4GB of memory, which Gilray said his team responded to with, "Yeah, 4GH, awesome, can't wait."
But it wasn't until later, specifically during the PlayStation Meeting when Sony officially unveiled the PS4, that most third-party devs got the truth: There will be 8GB of GDDR5 memory and Gilray (and others) are big fans of that:
"It's a fantastic amount of memory, especially DDR5 memory, because it's so fast you don't have to have everything there at once. You can swap it in and out instantly, effectively. But when they said 8GB it was like, 'Ooookay.'"
Gilray added that Sony has "ring-fenced" memory for system functions away from the memory used by games. This means that gamers won't have to quit the game to access the XMB on the PS4; currently on the PS3, you have to quit if you want to do anything on the XMB. Yes, developers certainly seem satisfied with what the PS4 has to offer, wouldn't you say?