Pros: Works at advertised speed. Patriot also has a good website with useful information about setting RAM timings, voltages and speed. They also have links to websites where you can download excellent software for testing your RAM. The Patriot RAM that I purchased 15 months ago has been a consistent performer and trouble free.

Cons: My particular sticks did not allow for stable overclocking or more aggressive timings. The PC6400 RAM would have been a better buy. My previous Patriot RAM (PC5600 3-2-2-5) and my Corsair (PC6400 4-4-4-12) both allowed me to overclock my CPU by nearly 20%. However, reducing the CAS Latency or increasing my FSB speed (with this RAM) made my computer very unstable. This is not a complaint, as the RAM does what it advertises and I got what I paid for. It is a bit of a bummer, though. It just bites me in the shorts that RAM prices dropped 10% shortly after my purchase. But in this business you have to get used to that.

Overall Review: Two thoughts: First, Patriot's rebate practices are a bit unsavory. They give you only 2 weeks FROM THE DATE OF PURCHASE to have your rebate postmarked, regardless of how long it takes to ship to you. This can give you limited time to test the RAM, and you are hosed if you are waiting on other components to arrive to complete your system. I got burned by them the last time because of that. Also, the RMA forms will change every two weeks (sale from 1-15 to 1-31, then the next sale is from 2-1 to 2-15), so if you bought your RAM on 1-26 but don't print out the online RMA form until 2-6, it will be the WRONG FORM and they won't honor the rebate. I hate those types of dirty practices. Second, you must remember to set your timings manually. The SPD timings are deliberately set higher for broader compatibility.

Pros: Average price. Excellent performance. Best of all it worked with my Intel DG965WHMKR motherboard which would not accept other ddr2-667 ram that was rated at 1.8 volts.

Cons: NONE

Overall Review: After going thru some incompatibility issues, it was a pleasure to get this ram. The intel board I have allows no adjustments to voltage. I was able to run the sticks I got on the intel board at ddr2-800, I did change the timings to 5-5-5-12 before attempting(to be safe and not waste time resetting the bios in case it failed) and it worked fine--passed hours of prime 95. After checking many benchmarks that I ran the difference between the 667@4-4-4-12 and 800@5-5-5-12 was not that much--good to know it can do both, and if I wanted to push the ram on another board I am sure I could as others seem to have done. I just don't have that need, I am looking for cool and stable. Compared to the non low latency 533 that I had laying around,, the difference was huge. All testing was with the onboad graphics and core2- E6400.

Pros: Runs great at 900MHz (4-4-4-12 @2.2V) on Gigabyte DS3 with Alendale 6400 CPU. As mentioned elsewhere, these sticks use Elpida chips which are great for OCing but not so great as Micron D9 based memory sticks. For the price this is a great bargain.

Cons: None

Overall Review: This memory runs default at 1.8V which is according to DDR2 spec and this is a plus if you put them on motherboards that stick to this spec (e.g. Gigabyte DS3 with early BIOSes required exactly this). The 1.8V guarantees wide motherboard compatibility. Another thing - it might be cheaper to get memory like this and buy a bit more expensive CPUs with higher dividers than buy expensive memory + cheaper CPU. This is exactly the case with Alendale 6400 and 6300. Not to mention the related higher requirements on motherboards to achieve much higher FSBs

Pros: DDR2 667 for AM2, oc's to 800@2.1V with zero issues. Have not tried anything higher. Stable. Works at default SPD of 4-4-4-12-2T@1.8V with no issues as well.

Cons: First set had one bad stick. Had to RMA whole package. Took forever for the process. New set passed MemTest86+ after 6 hours of testing so I am confident.

Overall Review: All manufacturers will produce bad RAM every now and then, I was just an unlucky one.

Pros: 1) I had some questions and emailed Patriot support a few different times. They responded quickly, and with helpful information each time. 2) Meets the 667 4-4-4-12 1.8V specs. Important considering that many new Conroe and AM2 motherboards have problems booting with > 1.8V memory. 3) I was able to get it running at 800 4-4-4-12 1.9V.

Cons: I had some problems OCing this RAM in my GA-965P-DS3 motherboard. Swapping from dual channel slots 1+3 to slots 2+4 fixed all my problems, so I suspect the motherboard (or gremlins) rather than the memory itself.

Overall Review: It bears repeating: my experience with Patriot support was outstanding.

Pros: I purchased two of these kits for a total of 4x1GB, and they work without a problem in my non-overclocked computer (Dell Dimension 9100).

Cons: None.

Overall Review: Keep in mind that by default, 32-bit versions of Windows XP and Vista can only address 4GB of physical RAM, and from what I've read, this includes your video card RAM. This is not the fault of this RAM, or of Microsoft, or of PCs for that matter, but rather a limitation of having a 32-bit address space. There's a quick fix for the tech-savvy that can be googled, or you can just opt for the 64-bit version of Vista. Just don't be surprised if your BIOS sees 4GB, but your 32-bit OS only sees something like 3.5GB (if you have a 512MB video card).

Pros: at stock speed of 667 Mhz, these will run with timing of 4-4-4-12. If you want to run at 800 Mhz, timing has to be increased to 5-5-5-15 and voltage increased to 1.9 (default is 1.8). However, 800 Mhz is about the max you will want to run. Anything over 800 Mhz cause random lockup and reboot. Newegg shipping is fast.

Cons: None.

Pros: Overclocks nicely, stable, cheap with rebates and free shipping.

Cons: none

Overall Review: word of advice with rebates: as soon as you order, download or print rebate forms because the rebate form will disappear-replaced with another rebate form.It can not be found even in the newegg past rebates section most of the time...