G.SKILL Ripjaws X Series 16GB (2 x 8GB) 240-Pin PC RAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-1600C9D-16GXM

Pros: - Fast and stable.
- Enabling XMP in BIOS clocks to 1600Mhz speed and adjusts timings accordingly.
- If XMP is not an option (and your board is running this kit at 1333Mhz) entering the timings manually literally takes all of a minute.
- Noticeable performance increase in several memory hungry applications. (If you're a video/graphics editor, you'll wish you'd ordered sooner!)
- Room to overclock if this wasn't fast enough!
- I hate leaving 'non-technical' pros, but this kit does look pretty cool. Not only in design but their choice of blue really pops off the motherboard.

Cons: - This is not a con of the memory, but if you're using Windows 7 Home Premium or Windows Vista Home Premium PAY ATTENTION HERE!
Micrsoft has set a limitation of 16GB to the maximum available memory supported in these versions. While this kit will work, Windows will report 32GB installed with 16GB available.
You have 2 choices here:
1. Buy a 16GB kit instead and save a little $$$
2. Upgrade to the Professional or Ultimate versions. As of 03/2013 the Anytime Upgrade option for Home Premium to Professional for Windows 7 is ~$90.
- Not all motherboards will run this memory at 1600Mhz out of the box. If you need assistance in manually setting the timings, check the the G.Skill forums.

Overall Review: I'll try and keep this review short and to the point.
At the risk of sounding like a fan, which is not my intent, this is my 4th memory kit from G.Skill. 4 kits over 7 years with 0 problems. There are very few vendors who put out competitively priced memory that consistently receive high ratings from their customers.
Look at the reviews for yourself. Not only do they respond to customers who are dissatisfied or having problems (And note they don't respond with the same generic "we're sorry... contact support" company standard copy/paste used by most other vendors.), but they also respond to the positive reviews as well. They take the time to communicate with each individual customer.
The reason I say this is so you understand you really can't go wrong with this kit vs any others you may be considering right now and I'm very confident in that statement.

With that said, 32GB might be a little more then I personally need today and perhaps a few of you as well. But it's nice to know a year or two or five from now that a memory upgrade won't be on my/your list of concerns.

Pros: Very fast RAM.

Cons: I run sys_basher periodically to determine if my RAM is reliable. Desktop systems don't have ECC so there is no way to know if you have a RAM problem unless you run a diagnostic like sys_basher (availble in the repos for Fedora and Enterprise Linux 6 and 7). I bought this RAM in May, it passed sys_basher at that time. Over New Years I ran sys_basher on all of my systems (I have 10). One of these DIMMs failed badly. I ran sys_basher repeatedly (it's an overnight run) and if failed consistantly. I moved the DIMM to another socket just to make sure it wasn't a motherboard problem, the errors moved with the DIMM. I replaced the DIMM with a spare, now the system passes sys_basher.

Overall Review: DRAM is not nearly as reliable as people think. I've had several DIMMs fail on me, altough none has failed as badly as this DIMM. Unforunately desktop systems have no error detection or correction, if you want that you have to buy a server, so the only way to know if you have a problem is to run a diagnostic. On Linux systems the program to use is sys_basher, I don't think there is anything as good on Windows boxes (Memtest86 isn't nearly as comprehensive).