Michael-5 said:
Picture a highway, and RAM being the number of lanes. If you have 16 lanes, great, but do you need it for 100 cars/day? However having only 1 lane would significantly slow down traffic as everyone would be stuck behind 1 car. DDR5 with said analogy would be 5 lanes, where DDR3 is 3 lanes. |
If you are trying to make analogies, try to make correct ones. Otherwise it just confuses the hell out of people. So your analogy actually goes like this:
1. DDR3 in the XBox One has a highway with 256 lanes. GDDR5 in the PS4 has a highway with 256 lanes.
2. The PS4 has a much more modern highway that allows each car to drive much closer to the car in front of it than on the X1 highway.
Now esram is somewhat more complicated. Technically, it is a software managed cache/address area. In our analogy, it could be described as a 1024 lanes highway with a twist - each of the four groups of 256 lanes can end at a destination that is not fixed in advance. You can manage where the lanes end. That works because there is an extremely clever highway manager that takes care of all the possibilities.
