thequn :
Interesting because on my desk top my Ivy bridge is running at 10 watts...
Interesting, which desktop Ivy Bridge processor is that? The lowest TDP Ivy Bridge SKU I'm aware of has a TDP of ~17W, and that's not a desktop part.
And in any case it wouldn't be the same. For ULV Haswell Intel worked a lot on not only CPU/GPU thermal management, but total platform thermal management as well. The PCH is now integrated on package, so that 4.5W SDP (11.5W TDP) is for the CPU, GPU, PCIe bus, memory controller, and south bridge.
Edit: The Pentium 2129Y has a 10W TDP, but again not a desktop processor.