Summary: Not really any cons to speak of, just make sure you have a wide case, it stands over 6 inches high.
Pros: On long hard gaming runs (BF4) on an 4th gen I7, the temps have reached a max of 45C, or 113 F with this cooler. The case is a Thermaltake, G10 Snow edition, ROG Formula board, SLI GTX 670's. The case may help with all the fans keeping the CPU temp down this low.
Cons: Seen some complaints on the install, there, black holding clips have to be installed with the bolt in them, and then slid onto the lower bracket, otherwise you will wonder why they did not provide long enough screws. Once I got that right, and followed the same bolting pattern for the 1155 socket for my 1150, it worked just fine.
Summary: I have been using this heatsink for quite awhile, on my LGA775 (Core2Duo E6600 g 2.4ghz) in my Antec P160W. Despite the Antec being a midtower, it fits like a charm, leaving up to half an inch between the top of the heatsink and the side panel/side window. I will also be using it in my new build with an LGA1155 (Core i5 3570k g 3.4ghz) in a Thermaltake Element V. No question, it fits perfectly inside a full tower. The installation is ok.
Pros: - Nice looking heatsink/fan, - Very good heat dissipation, - Fan shoots directly into the rear exhaust fan!!, - Compatible with a wide variety of socket/CPU, from older to newer, - Easy to clean with air blower
Summary: I am currently using a Gigabyte P55 motherboard and i5 750 CPU. With the stock cooler, my CPU can go up to 80 degrees when I play games such as battlefield and left 4 dead. At idle state, my CPU can still reach a quite high temperature of 50 degrees. After installing the Zalman 9900 max, my CPU temperature dropped about 30 to 40 degrees.
Pros: - Quiet (can hear some noise when it is at its max speed), - Equipped a LED which is quite cool, - Able to see a significant 30 degrees temperature drop from a stock Intel cooler, - Package included a small bottle of thermal compound
Cons: - Size is a bit too big (make sure you measure your case before purchasing), - Putting the screws on can be a bit troublesome because the fan is huge and you got to fit the screws under the fan onto the motherboard
Summary: I bought this to do some light overclocking as well to match the LED's in my system. It keeps the CPU a lot cooler than the stock heat sink and is fairly aesthetically pleasing in the looks department. My only complaint is that it doesn't have a speed adjustment dial, only a 4pin fan adapter which runs the fan on low, otherwise, without it, it always runs at high speed which can be a bit noisy.
Pros: A lot better than stock cooler, Blue LED, Lots of extra thermal paste
Summary: Purchased it when it was on sale. This fan kept my computer under 40 degrees when gaming and below 30 degrees when idle consistently, which is great. But I had many problems with it, such as the fan being too loud, that its even louder than my stock fan, only able to see the red LED light in the dark, and having to need more than 2 people to install the fan into the case due to its size and shape.
Pros: Cools the computer consistently.
Cons: - Loud, - Red LED is not bright enough., - Installing is a pain.
Pros: I previously had a Cooler Master Hyper 212. Either this cooler is significantly better or my application method was better when I installed it.
Cons: Installing this thing on my AM3+ motherboard was a disaster. My Cooler Master's backplate was secured by screws and nuts; the Zalman's backplate is secured by two sided tape. The backplate pulling away from the motherboard while trying to get the last scew in was a serious issue. I managed to get it on, but who knows how much damage I did.
Summary: I bought this after owning my current build for a year and a half. I regret not getting a cpu cooler sooner as my i5 2500k temps would easily get to the 90C's with the stock cooler and a 4.2GHz overclock. Buying this cooler on sale for the same price as a Hyper 212 was worth it as I was able to get a stable OC of 4.5GHz with the cpu temp maxing out at 76C with Intel Burn Test and using 1.38V (I got a "bad" i5 2500k cpu).
Pros: cooler cpu, able to overclock higher, looks cool
Cons: a pain in the a** to install, some may find it loud