Pavilion g6-1262sa CPU upgrade v2, Sandy Bridge = Ivy Bridge?

Question

Hi, thanks to the Pavilion g6-1262sa maintenance and servicing manual and this magnificient forum I've recently found out that replacing my i3-2330m is possible with all sandy bridge processors up to i7-2620m.
Theese questions may sound silly but I continued my research and I've got couple more ideas to confront with reality.
I do realise that compatibility is not only matter of fitting the same socket but also bios installed on certain motherboard, however:
1. Do you think it would be possible to swap Sandy Bridge (2nd gen) i3-2330m for some Ivy Bridge (3rd gen) i5 -3210m? 
2. Is the 32nm to 22nm manufacturing technology enough difference on it's own (even if the rest of architecture is the same) to prevent this from working? 
3. Is bios of my g6 motherboard somehow identyfying installed processor? (if it's not on "the list" it will simply not run?" or is it only technical compatibility matter?
According to some statements which I found on some IT forums and sites (and some self researched facts):
Socket: both processors are compatible with BGA1023 socket. (at least that's what I found, if someone could confirm I would be grateful)
Architecture difference: "The 3rd generation is called "Ivy Bridge," and is basically a copy of Sandy Bridge manufactured on a smaller scale, or die. However, Intel also focused on beefing up the integrated graphics in this generation."
TDP: both are 35 W
Cores: both are 2 physical (4 Virtual - thanks to hyperthreading I guess?)
Power consumption: "the Ivy Bridge CPUs also use less power", "Ivy Bridge consumes a little less power; around 10w i think."
Temperature: i5 -3210m goes 5*C higher than i3-2330m - shouldn't do much difference
Looking forward to some replies, RacA
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Answer 1

It is not a technical (socket) incompatibility since as you likely know Ivy Bridge and Sandy Bridge are backward compatible on most desktop motherboards. However, HP has only implemented 2d gen Intel Core processor compatibility on the HM65 Express chipset which yours has. Motherboards that will support 3rd gen CPUs use the HM77 chipset. There is no other motherboard that will fit in your chassis. 
Your analysis above, which was pretty good, left out the chipset, which you always have to think about when assessing upgrade possibilities:
http://www.cpu-upgrade.com/mb-Intel_%28chipsets%29/HM65_Express.html
The HM65 does support a couple 3rd gen CPUs but none of them is on HP's list for your model. You could try one of the ones listed in the link I gave but I think there is a very small chance they will work.
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