Originally posted by Jake
GDDR5 as well has slower timings so will be slower at doing what ever it has to do so effectively the Xbox Ram wins.
GDDR5 benefits from a 256/384-bit interface and doubles the I/O of DDR3.
DDR3 does has low latency timings
but at the expense of bandwidth and when you see the latency numbers compared to GDDR5 on paper it looks like the GDDR5 is slower than normal desktop RAM, but actually the speed of GDDR5 RAM is
BLAZING fast compared to normal DDR3 RAM and since the PS4 is going to have 8GB unified GDDR5 for the system RAM and VRAM in combination with a CPU+GPU on a single die, the CPU will have direct access to the GDDR5 RAM and vice-versa to improve performance.
I guess you could say Sony
has actually made a next-gen console because you can't actually build a PC with unified GDDR5 RAM even if you wanted to.