Abwx: You're using an ambiguous marketing slide without figures as evidence for frequency gain at the same power.
That slide could be in the 2GHz range... Or the 1GHz.
Can you show?
It s clearly for the whole frequency range, this is visible on this graph by the way the curves are shaped,
the blue dotted line is the power in function on frequency of GF 28nm, it end at about 4.3GHz for frequency,
AMD made the same when they published XV comsumption in respect of Steamroller, the curves were also spanning the full range albeit being scaled on the axys.
FTR if it was in a restricted frequency range the curves would be close to straight lines, here it is clear that these are polynomials based curves with the knees when the curve transit to higher degrees also clearly visible..
Even if you think FO4 is the same or similar (it's isn't, it's worse for clocks, as BD was a speed demon design. Speed demon = low IPC x high clocks):
FO4 delay is smaller than with 28nm, for the simple reason that 14nm LPP transistor have 20% lower switching capacitance than 28nm, this should theorically allow 20% higher frequency just with this improvement..
Since transconductance has been increased by 1.5x this will add on the previous improvement and the total is theorically 45% lower FO4 delay, although this cant be achieved because the strain capacitances and routings resistances and inductances will take their toll and limit what can be actually realised, but still, working at frequencies comparable to Kaveri is trivial.
XV 3.5GHz 8C hits 130W - best possible case - based on the top DT model (in reality it is more).
The 4C 3.5 use 46W in Cinebench but with 8C it would be at 130W..?..
A 8C would consume 70% more due to some circuits not being duplicated..
I suggest that you make some reasearch before throwing random numbers whose only result is to produce useless discussions, see, i wouldnt have edited my post if i didnt notice this non sense..
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