It makes sense. DDR3 is fast. The timings are low in comparison to GDDR5. The big difference is DDR3 has 64-bits per memory channel, and I'm assuming XB1 is dual-channel, giving it 128-bit memory. PS4, meanwhile, is using GDDR5 and presumably is running 256-bit memory (8 times 32 bits per channel), though 192-bit (6 channel) or 384-bit (12 channel) is entirely possible. GDDRx is better at handling graphics since it can cram so much in the data tubes, while DDRx is better with system memory because it doesn't typically need to copy HD textures and can be optimized for speed instead. I guess you can make an analogy using pipes? I'm bad at wording those, so I'll let somebody else do it.
Originally Posted by jcrew3002
Originally Posted by MuzicFreq
Okay that video I stopped at that the XBO uses no ram and call this OVER!
The fact is that supposedly the XBO uses 3GB ram for the 3 systems it has loaded.
Im still trying to understand how it can run 3 Operating systems at once! haha is that even possible? and why?
I'm not entirely sure on any details, but my best guess is that there's one main kernel (stripped down Windows 8, IIRC) running three programs, which function as virtual machines, at once, and can easily/quickly be Alt+Tabbed. As for why, you have three OSes optimized for various tasks. One for games, one for media, and another for something else. As much as I hate what MS has done, XB1 and Kinect are awesome from a technological standpoint.
EDIT: check two posts above me; that explains it better