Heating of Core2Duo vs Core i3

[eldisviler]

Hi, I am trying to get information about how does
core2dup processor compares in heating with core i3, given similar clock speeds and same load.

Thanks in advance, Eldis Viler

 

[WR2]

Hello eldisviler;

Cpre 2 Duo generates less heat.
Core2 Duo E7500 (3M Cache, 2.93 GHz) Max thermal design power 65watts.
Core i3-530 (4M Cache, 2.93 GHz) Max thermal design power 73watts.

 

[MarkG]

Cpre 2 Duo generates less heat.

Isn't the i3's idle power lower though? My i5 spends most of its time idle, so that's more important to me than power use under load.

 

[WR2]

E7300 228 million transistors @ 45nm

i3 530 382 million transistors @ 32nm plus 177 million graphics transistors @ 45nm

 

[cjl]

Isn't the i3's idle power lower though? My i5 spends most of its time idle, so that's more important to me than power use under load.

The idle power might be a bit lower, though honestly, the idle power for both of them will be pretty darn low.

 

[WR2]

It wouldn't surprise me if the i3/i5's did use less power at idle. And maybe even under some CPU only loads as well. I'm sure they've been optimized for good power conservation.
I can also see a heavy 3D graphics session pushing the power requirements above what the CPU cores alone would use.

That max thermal design power rating isn't the best guide to use talking about 'heating' and cooling requirements but it's the only one Intel provides.

More transistors can mean more heating. But E8500 with 410 million transistors @ 45nm also has a Max TDP of 65watts.