Pros: Fast, good timings, heatspreader included, good price for CL4. Overclocked mine as high as 900Mhz 4-4-4-12 with only 2.1v needed, and I'm sure it would go higher if my FSB could also. Currently running 866Mhz with 2.05v.

Cons: First pair was defective. Was replaced with a later revision which works perfectly. Newegg's RMA was a big slow.

Overall Review: Using with P5B Deluxe. Be sure to manually set your timings when you overclock, SPD can lead to problems. I was going to give 4-stars because of the bad first set, but its worked so well with the new ones, I gave it 5.

Pros: It booted at default voltage with my Gigabyte DS3 and an early BIOS, unlike many other high end sticks. They run fine with only 1.8v. I've tested it at 4-4-4-12 @ 938Mhz, and also 5-6-6-17 @ 1000Mhz. They might do better than that in both speed & timings, but that was the limits of my CPU and that FSB/ratios, etc.

Cons: Initially, I had to run them at 5-5-5-15 to be stable. But its not really their fault, it was surely a problem with Gigabyte's BIOS, b/c after I updated to the F7 BIOS it cleared the stability problem.

Pros: Perfectly stable at 4-4-4-10-14 @ 800Mhz as per description. The REAL PRO is that its also perfectly stable at PC2-7200 speeds at CL5 - and even better (best performance) is at the actual timing setting 4-4-4-12-16 @ 868mhz (434 dual) *PC2-7000 or so (about 6959+ MB/s per channel, double that for dual channel ofc) on GIGABYTE GA-G33M-DS2R w/E6320 @ 2.43GHz (1.8Ghz stock) 100% stable!

Cons: Auto initialized at stock speeds (as per cpuid CPUZ) setup as 5-5-5-15-21 @ 800mhz OR 4-4-4-10-14 @ 667mhz - not bad for me considering I'm OC'd anyway... but if your bios isn't OC/Memory timing (setup) friendly you may have issues. I'm not taking an "egg" off for not initializing correctly because its so great at other speeds!

Overall Review: I have 4 sets of these chips each in different chipsets Nvidia680i (C2Duo), IntelG33(C2Duo), P35 (C2Quad) & Nvidia7025(AMD64FX); generally this memory exceeds my expectations on every system I use them. FYI on Gigabyte motherboards press CTRL+F1 for additional tweaking options. With my evga 680i SLI motherboard not 100% stable at 900MHz (pc2-7200) @ CL4, so on that system its set to 5-6-5-21 @ 997Mhz w/E6600 at 3.2Ghz (I haven't yet pushed it as high as it will go so I know there's probably more to see at CL5, maybe slightly tighter timings). By the way sometimes its better to go with a lower bandwidth (or MHz) for tighter timing schemes; 866MHz with CL4 is actually better than 933 @ CL5 and these chips will do both 100% stable on every setup I've dealt with. SLI setup didn't like the CPU/Mem ratio for the low timing setup (866Mhz @ CL4) for some reason, could have been voltage issue on the 680i board I have, but with SLI disabled it was fine go figure - Overall An Excellent Product!

Pros: Inexpensive, heat spreaders are a pretty shade of blue, fast

Cons: Had to manually set timings in BIOS

Overall Review: Mobo: Gigabyte GA-P35-DS3L. Had to manually set timings to 4-4-4-12 (no CR setting means the CR is set to 2T) but otherwise work very nicely. Other brands may provide faster performance; even G.Skill's own F2-6400PHU2-2GBHZ kit. But SiSoft Sandra's benchmarks show this RAM isn't a slouch either. It's much better than any DDR1-400/1T speed. Win Vista Ultimate's performance index, out of the box, is 5.6 (FWIW, I'd stick with Sandra) I don't care for overclocking the bus, so if there are improvements to be had, I won't ever know.

Pros: It worked great, running at stock speeds, nothing fancy, no overclocking.

Cons: One stick went bad after a 3 months. It didn't just die outright but caused intermittent errors that steadily grew worse until it started blue screening windows within a minute or two of startup. A royal pain in the rear tracking down the error, thankfully it's not the motherboard.

Overall Review: I've never had a stick of memory go bad till now.

Pros: Works great at rated 4-4-4-12 800Mhz speed. No voltage increase necessary. The picture made me think I was getting white heat spreaders (I didn't look at the blown up views) so I was pleasantly surprised to see the nice blue color.

Cons: Absolutly NONE. Works as described.

Overall Review: Watch out for your BIOS settings. I was unaware that my motherboard (a Gigabyte G965 mATX) detected them as 5-5-5-12 until I looked at the timings through CPU-Z. When I went into the gigabyte BIOS, there was no manual latency timings settings. I thought I was boned after paying extra for lower latencies. I found out after a quick internet search that in the gigabyte BIOS you have to hit Crtl-F1 at the main BIOS menu to "unhide" the advanced settings. For some reason these memory modules report to the motherboard that they are 5-5-5-15, but they run perfectly fine at 4-4-4-12 like they are advertised. You just need to set them to that manually in the BIOS.

Pros: My FSB is 375 MHz so I'm running these at 375 MHz also to maintain a 1:1 FSB:DRAM ratio. I set the timings to 4-4-4-10 and they are 100% memtest stable. Rock on!

Cons: Presets are 5-5-5-15 at 400 MHz and 4-4-4-12 at 266 MHz

Pros: Works on my Asus, M2N-E mother board @ 1.95 volts. It is running stable @ 4-4-4-12-T2, as advertised. Very good price and as usual, great service from NewEgg.

Cons: None that I can see at this time,

Overall Review: Took me a while to figure out that the BIOS wanted a cold start, power off, with the reset button to accept the new 4-4-4-12 settings but once I did that, it booted just fine. These settings have to be manually set in the BIOS, using the setup menu.