Heat development with stronger CPU / faster?

I'm just wondering how this might work.

1. CPU:

Let's for example take the 2630 vs. 2820 or even 2920.
Would the 2920 always generate more heat and use more energy as the other two or would it actually be "more efficient" and need less energy/generate less heat if under the exact same load as the smaller versions?
Any idea about the scale of those effects?

As the CPU and the GPU are on the same heatpipe, I'm also wondering if a "warmer" processor would limit capabilites to overclock the GPU

2. RAM:

How much would higher clocked RAM (e.g. 1866) effect heat levels and GPU "overclockability" in terms of head dev.?
Would there be a noticable difference in power consumption vs. let's say 1333?

Cheers and thank you

 

1. A higher clocked chip gets hot the exact same, you're correct it's just more efficient.

2. Faster ram would have no effect on the 555m overclocking or performance. It would however make any games you play on the intel 3000 integrated graphics quite a bit faster. Power consumption would would be the same, maybe a little more but nothing noticeable. It doesn't really get any hotter.

 

the processors use different wattages, so yes.