Is there a reason for Asrock's absense in the OP? Their motherboards are supposed to be very good at price/performance. Been using a lot of them through the years too.
tl;dr, they were dishonest about components they were using on their motheboards. Turns out they were using some really cheap stuff that was causing voltage issues.
Dumb question i'm sure but difference between Ivy-E and Haswell?
Intel's desktop lineup is like this: XXXXXX being IvyBridge/SandyBridge/Haswell name
XXXXXX (Consumer) XXXXXX-E (Enthusiast) XXXXXX-EP (Sever)
Consumer chips have dual channel memory, 16 PCI-E lanes, and 4C/8T procs as the best offering, dual core procs as the baseline processors. K processors can be overclocked.
Enthusiast chips have quad channel memory, 40 PCI-E Lanes, and 6C/12T procs as the best offering. All processors can be overclocked, baseline offering is a 4C/8T processor.
EP is like a version of enthusiast with a higher focus on offering server stuffs (can't remember differences off the top of my head), but none of these can be overclocked.
Ivy-E will perform really similar to Sandy-E, with a slight improvement of maybe 4-10%.
The important part for people in this thread are these two things.
1) Ivy-E will have the heat spreader soldered on. This means good temps with the right cooling, which also means good overclocking.
2) Those who want a 4C/8T proc (like people with an eye on the 3770K or 4770K) will be able to get one for less money with more features.