Interesting post in the AMD thread:
Samsung DRAM catalog. Looks like 8Gb GDDR5 chips clock lower than 4Gb (understandable), but that low power GDDR5 chips (1.35v instead of 1.5v) are already up to 6 gHz, with higher to come.
This means Neo is probably (?) using 1.5v chips, while by next year the 6.67 gHz chips that Scorpio will need might well be available at 1.35v, meaning somewhat lower power for that phat 384-bit bus without needing to go with GDDR5X or HBM.
Which I think is something that Mr Fox was suggesting as a possibility.
Here you go.
Samsung DRAM catalog. Looks like 8Gb GDDR5 chips clock lower than 4Gb (understandable), but that low power GDDR5 chips (1.35v instead of 1.5v) are already up to 6 gHz, with higher to come.
This means Neo is probably (?) using 1.5v chips, while by next year the 6.67 gHz chips that Scorpio will need might well be available at 1.35v, meaning somewhat lower power for that phat 384-bit bus without needing to go with GDDR5X or HBM.
Which I think is something that Mr Fox was suggesting as a possibility.