G.SKILL Ripjaws X Series 8GB DDR3 1866 (PC3 14900) Desktop Memory Model F3-14900CL10S-8GBXL

Pros: Fantastic price. Fantastic performance. Asus M5A99FX Pro R2.0 motherboard recognized it instantly at 1333MHz, and after correctly setting the timings, got it to boot at 1866MHz. Runs great!

Cons: None

Overall Review: I HEAR that you can overclock this RAM without too much trouble. My motherboard can reach 2100 and 2400 but I haven't been able to get 2100 to POST. I am probably not setting the timings low enough or close enough to the actual timings. I don't think I'll mess with it until I get some RAM as a backup in case I damage this RAM.

Plan to order another stick or 2 of this RAM down the road.

Pros: When not defective, works great.

Cons: T'was the night before Christmas when St. Nick dropped by with a T'was the night before Christmas when all through the house were heard expletives echoing off the walls. Hard drive after hard drive, one after another, Corrupted - to the point they appeared to be scrap. Days went by as Windows 7 was serially installed and every item in the upgrade was replaced, one by one with new ones. Never was there an error message that would indicate that the RAM was at fault. Finally, all that was left was the RAM and the memory diagnostic accompanying Win 7 couldn't complete the test - still no error message. By now, 2-3 weeks into it, I was a raving lunatic. New Corsair RAM confirmed the problems location, hard drives finally worked as advertised, and replacement memory from Newegg (same brand) appears to have solved the problem.

Overall Review: It's rare to get bad RAM, but when it happens, it can be a nightmare. The purchase here was part of a collection that included AMD 8 Core Black 220 Watt CPU, a 4 TB hard drive, a 1 TB hybrid hard drive, a new video card, and a 700 W power supply. All unknowns.