Quote Originally Posted by mAJORD View Post
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Atom SoC TDP range: 5.5-13w
Ontario SoC TDP range: 5-9w, 18w (Different market segment)

The only Ontario SKU that has what appears to be a high TDP for what it offersis the single core 800Mhz @ 5w.

Clearly this is not a good indication of the core itself's efficency, otherwise a Dual core 1Ghz part with GPU would have a much higher TDP than 9w, wouldn't it. Perhaps the disabled GPU still consumes some power, Perhaps the IMC is a bit more power hungry compared to Intel's, perhaps the TDP is conservative, or perhaps a combination of things, who knows.
Ok, I see your logic. Let's look at what we get at the same TDP ( since they are overlapping in the lower half.)

Dual cores
T40N - 9W, 1.0 GHz, dual core, GPU, LVDDR3
vs.
N550 - 8.5W, 1.50 GHz, dual core, GPU

Evenly matched performance wise and power wise, GPU favours Ontario

Single cores w/ GPU
T23R - 9W, 1.2 GHz, single core, GPU, LVDDR3
vs.
N475 - 6.5W, 1.83 GHz, single core, GPU

Similar performance, 30% lower power for Atom, GPU should favour Ontario

Single cores w/o GPU ( for AMD )
T24L - 5W, 800 MHz, single core, no GPU, LVDDR3
vs.
N450 - 5.5W, 1.66 GHz, single core, GPU

Atom should win on performance and it also has a GPU while Ontario does not. Clear win I would say.
At any rate, neither company has an offering below ~5w in this segment
There are Atom designs in the sub 5w segment when you pair it with the US15 NB.
Also, I don't have specs for Lincroft ( Z6xx series for smartphones and MIDs) , this is the 2nd generation+ based on Moorestown with far better thermals than the original Atom, especially at idle.

Should have read 'Aren't, not 'Are' . My applogies, and fixed.
Well, AMD introduces power gating technology with Ontario, so the GPU being not used should be cut off from the power distribution.

From 800MHz and 5w for a single core, it is virtually impossible to get to sub 1w. Why ? In todays designs leakage is 25-35% of active power. So leakage itself is over 1w.
Maybe 3rd gen Bobcat ( 28/20nm ) will be under 1w without changing the uarch. Right now, at least to me, it doesn't look possible.