CORSAIR XMS2 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model TWIN2X4096-6400C5

Pros: The Corsair memory goes on sale quite a bit, and sometimes the deals are so good you want to reach for your wallet. If you're someone who sticks to known memory brands like Crucial, yes, you can be safe with this memory. I've been using it for years in about four different computers, and so far no issues. But, just the same, I am not a gamer.

Cons: There's a bit more to memory than meets the eye. If you are a serious gamer you probably already know about memory timings. If not read about it on Wikipedia if you would like to know more. This RAM isn't state of the art in high speed. If you're in that ten percent who needs high end performance, you can find faster timings. If you're in the other 90 percent this memory is more than fine.

Overall Review: Break out the old mobo manual and check out a few things. First, how much memory can your MOBO hold? If it has the slots for this RAM, and yet only recognize 2GB, then 2 is all you'll get. The other thing is to be certain that your MOBO will appreciate duel channel DDR2 PC6400 memory. If you have a MOBO that specs a slower speed, you most likely can still use this memory, as it will step down. The last thing is that I am a memory purist. I don't trust that the memory I buy six months from now will match this memory even if they are from the same manufacture. Therefore, when I buy memory, I fill up the board with memory bought at the same time. Thus, if you buy this memory and you ultimately want 8GB on your board, buy it all at once. Buy a second set of this memory.

Pros: Very fast memory, I plan on upgrading my motherboard to 8 Gigs in the future. Voltage and Timings are on the sticks so there are no mix ups. Also you should plan to upgrade above 2 gigs if you are on a 64-bit system. Otherwise stick with 2 gigs.

Cons: The voltage on the stick reads 1.8V. However, I have it set to 1.9V and it works great. Not a con, just watch out this: Install Vista with 2 Gigs, then install the second stick later. There are several hotfixes out there with the memory and "storport.sys hardware configurations" out there. Download them if you run into trouble and it will be resolved.

Overall Review: Vista Ultimate 64-Bit P5N32-E SLI 775 LGA Intel Core 2 Quad Q6700 Kentsfield 2.66 GHz This system is blowing Vista out the water. No issues and runs very fast.

Pros: It does what it claims to do. It runs at 5-5-5-18 timings at 1.9V, which is nice. All too many glorified DDR2-667 sticks are sold as DDR2-800 with a voltage bump to 2.0V or 2.0V. I am running 8GB of this (2GB x 4) on a Gigabyte GA-EP35-DS3R, with 5-5-5-15 timings, at 960MHz, at 2.0V. My E8400 is at 3.6GHz (9 x 400) and the memory divider at 2.4. Runs totally stable and quite fast. For the price, this is very decent memory.

Cons: None.

Overall Review: This holds up well for light overclocking. Don't expect crazy >400 FSB's out of this, though. Also, 4-4-4-x timings are out. 5-5-5-15 is the best I could get from them, but again, that's plenty fast and perfectly reasonable.

Pros: This memory works very well. It has been stable since I made a voltage change.

Cons: The documentation with the memory said to use 1.8v however the motherboard detected 1.85. The memory was unstable with all 4 gig in, but ran fine with one dim. After contacting Corsair I found out this should be set to 1.9v. After doing this it runs like a champ

Pros: This review is an update. This RAM is realllllllllly good. It is very flexible with timings and just by boosting the voltage a small amount, I was able to achieve 4-4-4-12 timings easily. However this RAM also defaults to 1.8V which makes it extremely compatible with just about every mobo. RAM sticks that require higher voltages can run into compatibility problems, but this RAM does it all! Low voltage / loose timings for compatibility, and higher voltage / tighter timings for performance -- no problem! Really there are only good things to say about this RAM.

Cons: zero

Overall Review: Do not regret my purchase one bit... I think I may upgrade to 8GB for vista 64.

Pros: Inexpensive, works great out of the box, low voltage.

Cons: Limitied overclock

Overall Review: I was able to get this ram stable 920 Mhz at 5-5-5-15 on stock voltage (1.8). Higher Mhz required 2.3 to 2.36 V, which is in the danger zone IMHO. The highest i got this ram stable at 2.36 v was 1025 Mhz. I was also able to get this ram stable at 4-4-4-12 at 2.3v at 850 Mhz. Currently I am running this ram at 920 5-5-5-15 1.8v to match my E8400 at 460 FSB with 0 issues. I found this to be the fastest overall configuration for my system on this ram.

Pros: Installed and works perfectly.

Cons: Rebate is a card, not cash. I don't like that at all. Cards have expiration dates and are not universally acceptable.

Pros: Worked right of the back. Was able to very easily overclock to 5, 5, 5, 18 timings with 960mhz frequency.

Cons: While it's easy to overclock the frequency, don't expect to push this memory into 4, 4, 4, 12 timings and still maintain 800mhz. It just won't work.

Overall Review: Probably the best value for RAM on newegg right now.