ASUS P7P55D EVO LGA 1156 Intel P55 ATX Intel Motherboard

Pros: Excellent motherboard like all my previous builds using ASUS. Frustration and problems have gone away now.

Cons: Memory slots have retention clip only on one end. Installation of memory modules requires delicate but firm touch to fully insert the modules. The end without the clip must be pushed down all the way, which required more force than I wanted to use. Two modules (slots A1 and B1) were fully inserted and the other two modules were not fully inserted, which caused the BIOS to indicate 4GB usable memory. Took me several days of frustration to solve, because I concluded that either the memory was bad or the board was bad. ASUS response blamed Intel and said the CPU was bad. Started RMA for memory but not required now that 8GB is fully inserted and detected. Dowloaded and updated BIOS to Version 0606 using flash drive, working from BIOS screen (no HDD, no OS installed yet).
8GB Corsair 1600 MHZ now show in BIOS as 1333 MHZ, all settings left in Auto so far.

Overall Review: Now that the motherboard, memory and video card works, I'll install HDD, DVD drive and Vista.
Core i7-860 2.8 GHZ; Corsair HX 750W PS; Corsair XMS3, 4 x 2GB; ATI Radeon HD 4670, 1GB, Cooler Master Hyper TX3 difficult fan clips.

Pros: Nice features.

Cons: What can I say, DIMM B1 was defective. After installing Windows 7 x64 on my machine, I randomly kept on getting blue-screens. I thought there might've been some driver issues, so I was trying to find the latest drivers of everything. It still got blue screens. So I decided to go back to Windows XP, and everything seemed fine for a while, until I ran Prime95 and it sometimes passed (21 hrs with no errors) and sometimes failed (failed within few seconds) and it would stay at that state until I rebooted my machine. I thought something could've been wrong with my BIOS settings with speedstep/turboboost, so I was messing around with that for a while. Finally I decided to give memtest86+ a test, and immediately I saw hundreds of failures. I then tested each stick of ram individually in DIMM A1, and it passed without any errors, but once I stuck both RAM in DIMM A1 and DIMM B1, I got hundreds of errors. I'm starting the RMA process, and hopefully the replacement won't have issues.

Overall Review: A defective motherboard is the most annoying part to replace, especially with the LGA1156, where the pins for the CPU are on the motherboard.