The difference in frequency is so small that it shouldn't dissipate that much more heat. It's the case with Intels too, you get a minor clock speed boost but the TDP stays the same. Of course, power consumption in real world is higher but TDP is only directional anyway and meant for OEMs.
The base frequencies for the new parts are lower than their equivalent last generation 45W equivalents. Peak turbo levels are higher, but turbo is only sustained at max level until the chip gets too hot; with stock cooling this is generally not a 100% duty cycle.
The next question is if AMD will be refreshing the 45W parts with higher clocks, or if those were just a way to do something with hot running dies.
PS If you compare the new 35W parts to the old ones, both base and max turbo numbers are unchanged or up.
TDP varies in large steps (for AMD, is 45, 65, 90 and 125W I think). So you might have two 65W processors, one consuming 64W and one consuming 46W. Also, the power consumption might go down if the newer, faster processors use a lower voltage.
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Arnulf - Wednesday, September 7, 2011 - link
So TDP is lower in spite of higher frequency ? This doesn't make much sense :(Kristian Vättö - Wednesday, September 7, 2011 - link
The difference in frequency is so small that it shouldn't dissipate that much more heat. It's the case with Intels too, you get a minor clock speed boost but the TDP stays the same. Of course, power consumption in real world is higher but TDP is only directional anyway and meant for OEMs.Taft12 - Wednesday, September 7, 2011 - link
It does if you know what TDP actually means.DanNeely - Wednesday, September 7, 2011 - link
The base frequencies for the new parts are lower than their equivalent last generation 45W equivalents. Peak turbo levels are higher, but turbo is only sustained at max level until the chip gets too hot; with stock cooling this is generally not a 100% duty cycle.The next question is if AMD will be refreshing the 45W parts with higher clocks, or if those were just a way to do something with hot running dies.
PS If you compare the new 35W parts to the old ones, both base and max turbo numbers are unchanged or up.
Calin - Thursday, September 8, 2011 - link
TDP varies in large steps (for AMD, is 45, 65, 90 and 125W I think). So you might have two 65W processors, one consuming 64W and one consuming 46W.Also, the power consumption might go down if the newer, faster processors use a lower voltage.