I'm going to leave it at this right now but I'm editing as you read this to show a full answer to motherboards, I just don't know how much I'll be going into it.
In general, you should keep in mind there are three tiers of motherboard qualities. This is strictly my opinion and based on my own knowledge and not by any means the absolute answer. Please PM me privately if you feel the need to express your dissatisfaction with my answer.Tier 1 (Normal price <$150)
: This will be addressed as budget or mainstream. This is the type of motherboard quality you would find in a build that limits its budget to around $600 or pre-built computers that are aimed for a low price of around $800 - $1000. This type of motherboard is only ideal to run at stock although it can be used to mildly overclock as well. Physical limitations of this type of motherboard is normally shown by its lack in RAM slots (2 slots despite the normal 4), lack of expansive PCIE slots, and few SATA ports. In addition, there are limitations to the board's build quality which include low-quality capacitors and transistors. Even the lining of the board is really low-quality probably using recycled material. Software limitations is the BIOS. BIOS in these types of boards are limited dramatically and the most common is the lack of the feature for voltage change and ratio change. This means you won't be able to overclock properly and if you had a board which didn't allow you to change ratio, you could only overclock using BCLK which isn't recommended for Ivy boards!Tier 2 (Normal price <$250)
: This will be addressed as enthusiast. This is the type of motherboard quality you would find in a build that limits its budget to around <$2000 or pre-built computers built by enthusiast builders like Alienware or CyberPC for around the price of $2500. This tier will be able to overclock very well and they are very good at them. Physical limitations aren't really apparent in this tier and the most common argument against this type is the lack of even more PCIE slots or the lack of USB ports and stuff like that. Board quality is very good consisting of high-quality capacitors and transistors. The lining of the board is really good and will handle most situations. Software limitations are semi-completely pulled away and the BIOS allows you to change almost everything.Tier 2-1 (Normal Price <$300)
: The only difference between this and Tier 2 is the fact that in this tier, you can change even the smallest obscure voltages! Compare motherboards like the Sabertooth and the Maximus V motherboards. There are extra voltages you can change in the Maximus line versus the Sabertooth.Tier 3 (Normal Price >$300)
: This will be addressed as Extreme. This is the type of motherboard quality you would find in builds normally built for LN2 runs or really big computer rigs. This will have everything that Tier 2-1 has and in addition to that, it will have a reinforced PCB allowing it to withstand extreme temperatures well below the freezing point. Sometimes it will also have additional PCIE slots allowing for a quad-GPU setup with additional PCIE slots for audio cards and things like that.
My recommendation: For most people, you will only need a Tier 2 motherboard. This is ideal to bring out the max performance of your build (including the OC of your CPU) under normal circumstances. By normal circumstances, I mean not LN2 cooling. If you do have a Tier 1 motherboard, I will gladly help you in overclocking your CPU (privately and not in this thread so it isn't flooded with OT motherboards), but if you really want to pull out the maximum performance of your CPU; I recommend you getting a new motherboard that fits the Tier 2 qualifications.Edited by Swag - 11/7/13 at 11:54am