i7, i5, i3: Heat, CPU Computing Power, Compatibility

I am wondering if these CPUs are PIN Compatible:
i7, i5, i3

Secondly, I'd like to know if they have the same architecture?
ie, do they execute instructions at same efficiency (disregarding the core counts)?

Lastly, what is the power consumption of each CPUs?

i7 appears to have the Lowest Clock speed vs i5. I am wondering if I can upgrade my i7 notebooks to i5 CPU instead - I prefer less CORE but at Higher Clock Speeds (assuming they are of the same architecture).

 

There are 3 types of i3,i5,i7 CPUs:

Type 1: i7 quads, these are 45nm CPUs, without integrated graphics and are socket compatible with the newer Arrandale CPUs, but there are some mainboards which can only use these, and are not compatible with the Arrandales.
The TDP of these is between 45-55W without the GMA.

Type 2: i3,i5,i7 Duals, these are 32nm CPUs, with integrated graphics. The TDP is between 25-35W (25W are LPs, they might be not socketed, but soldered)

Type 3: i3,i5,i7 ULVs, these are dual core 32nm ULV CPUs with integrated graphics, they seem to be soldered, so no CPU swapping here. TDP is 18W.

 

According to the naming system and in some people's minds that would be a downgrade.

 

In that case the i7 620-M would be the best candidate in the area: it is the highest clocked dual core CPU.

 

The LV and ULV are both soldered in and you cannot upgrade. i7 quads and i3/7 ULV have the lowest clock speeds and the i7 dual core has the highest clock speeds. For majority of users, you will notice no difference between any of the CPUs since they downclock when not being stressed. For multithreaded applications, the 520M, 540M, 620M and even 720QM, do not perform much differently and certainly not worth the cost of upgrading most of the time. If you have money and want a fairly significant boost, go for the 820QM, else stick with the 520M.

 

i7 quads HEAT- they run pretty hot. much more than the dual cores.

But it's expected as its 4 cores + 45nm

 

you can easily compare the processors at Processor Spec Finder

 

it will be warmer but the core i5 and i3 duals and even i7-620m have had way worse battery life than expected.. also with quads , u can expect heat.. but if u have a proper cooling system like clevo alienware or Asus , they shouldn't run hot.. its because of hp's crap laptop design that even intel chips run hot and AMD ones just burn the laptop out.

 

This tells you everything about Intel Processors: ARK | Your source for information on Intel products

 

What I have are i7 720QM for the Qosmio, and an i7 820QM for the M15x. These i7s i believe are first generation i7s which are fairly hotter than the newer ones.

I just saw how cooler (lower temperature) new MacBooks using newer i5 and i7 CPUs. So I was wondering if it is a CPU thing, or a notebook design thing.. (Macbook dont even have any ventillation fans - so how was it even cooler? maybe its the huge aluminum case that is dissipating the heat?)

 

The i7 in the MBP has pushed temps past 100c. They're definitely not any cooler than my C2D MBP. As for ventilation, yes, they're ventilated. The vent is in the hinge design. And as far as i7's go, all MBP's that have them, have Dual Core i7 620's. No quads for the mac notebooks, they'd melt. Or you could use them as a hot plate, dorm style.

 

well it i7-620m which is a dual.. macbooks are really not desgined for high end processors... the aluminum body doesn't help at all too... so this case , not fault of intel but apple.. they need to redesign the macbook.