Why Xbox One Will Catch Up To Playstation 4 in Performance.

[Michael-5]

drkohler said:

Michael-5 said:

1. DDR3 is 64 bit, not 256, so DDR3 on XB1 would be like a 64 lane highway in your analogy.

ddr3 chips are 16 bits wide. The XBox One has 16 chips in parallel for a 256 bit bus

gddr5 chips are 32 bits wide but two chips can be paired as 16 bits wide each (clamshell mode). The PS4 has 16 chips in clamshell mode for a 256 bit bus.

Something like that, that's where my level of comp sci intelligence stops.

PS4 has 16 x 4Gbit chips for a 256 bit bus, but in clamshell mode don't those chips split between 2 IC's? This would effectively double the memory, and it's why the memory is half the value in clamshell mode (this is why you don't see 16 x 8Gbit chips).

I dunno, I keep reading that DDR5 is about 4x as powerful as DDR3 for a given size. Is that true? That's all I'd like to know.

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Also reading, 3/8 GB of RAM is used to power Kinect/the OS. So doesn't the XB1 only technically have 5GB of DDR3 RAM for games?
http://en.wikipedia.org/wiki/Xbox_One#Hardware