AMD Ontario APU pictured,die size ~77mm^2

[Hans de Vries]

Well, the AMD engineers who validated the 5w 800MHz part as the lowest power part did not know that. Write them an email about this.

Leakage itself in such a part is higher than 1w and you know it.



Not really. They said " sub 1w capable". That doesn't commit to anything. It could be 3rd generation on 28nm of the uarch that reaches sub 1w cpu power.

No, they are saying that Bobcat (40nm) has sub 1W capable cores.
They specifically say that the entire Ontario System-On-Chip is designed
for the netbook segment and the value/mainstream notebook segment
and that it wasn't designed with tablets in mind and certainly not for
smart phones.

And that low power DDR interface will make it shave half the TDP. What are you smoking ?

No, the difference between driving 64bit GDDR3 and GDDR5 (P2P) is 2W TDP
for example. You are comparing a retired device which didn't even had a
memory interface but a 400MHz FSB instead against a 64bit DDR3 bus at
1033MHz which needs to be able to drive multiple SODIMMS.