Thanks for the extra information. I think I'm almost at my answer now.
I don't game, so CF and SLI don't matter to me.
I'm not an overclocker (yet) so overclock-ability is not a consideration for me.
Therefore, it seems to me that I need not be concerned if an OEM offers a Lynnfield processor like Core i5-750 on an H57 chipset vs. a P55 chipset. My Lynnfield processor will not suffer any performance loss, and it's hilarious that I would even wonder about such a silly thing.
Yes. The i5 750 is fully compatible with the H55/57 chipset. H55/57 is mostly targeted for budget builds and for the Core i3/5 CPUs that have an on-die graphics. Just remember that the i5 750 does not have the on-die graphics chip.
Here is a link to a P55 motherboard
GIGABYTE GA-P55-USB3 LGA 1156 Intel P55 USB 3.0 ATX Intel Motherboard http://www.newegg.com/Product/Product.aspx?Item=N82E16813128425
It has this software where you can safety overclocked your CPU call the smart 6
This mother overall is a great buy and super good when it comes down to gaming.
The other features are Auto Green, enegrysaver 2 and raid controller.
I love this mobo, just check out my video on my youtube page