Pros: Inexpensive. And surprising effective for an all aluminum cooler that doesn't look that much different from the stock cooler. Easy install that's pretty hard to screw up (just tighten the 4 screws) and didn't require stressing the motherboard or risk of shorting any motherboard components where the back-side bracket is mounted (bracket is non-conductive).

Cons: It's solid aluminum. No Copper. Some people may be put off that they have to remove the motherboard to place the bracket with the screw hole pylons that goes on the backside of the motherboard.

Other Thoughts: Needed an inexpensive cooler for an older Core2Duo CPU on a LGA 755 socket that was being run at stock clocking, and this guy fit the bill.

Pros: Had a problem with overheating with the ordinary cooler which came with the cpu. And it was very fragile that one of the plastic push pins for tightening between the cpu and motherboard can be broken. However, This cooler is easier to install and secured works better.

Cons: none.

Other Thoughts: I had to unscrew all the parts of the pc because of putting the bottom plastic plate under the motherboard.

Pros: Have had it on an Intel Core 2 Duo processor for over a year with no issues. Fan is still quite and the cpu has never had any overheating problems. I don't overclock, but I do game a lot of edit lots of videos.

Cons: Doesn't come with free nachos.

Other Thoughts: If you had 5 bucks, and Chuck Norris had 5 bucks, Chuck Norris would have 10 bucks.

Pros: Price-Nice fan at a very inexpensive price. No stupid plastic push pins which always seem to break. This fan seems to be well constructed and pretty sturdy. Comes with thermal paste but not very much, so make sure you get it right on the first shot.

Cons: Because of the back plate for the fan you have to take out the motherboard to install this unit. Not really a con but just a note.

Other Thoughts: I bought this fan to replace the original fan that came with my processor. When I tried to re-install it the stupid plastic push pins broke and I needed a new fan. There were plenty other fans with plastic, but since I no longer wanted any part of that I bought this fan with screws and the back plate. Once you have your motherboard out of your case there are no issues installing this fan. I noticed a few people said this fan is noisy but for me it isn't too loud. This is well worth the money and if you're looking to replace something that broke then I would highly recommend this fan.

Pros: good inexpensive cooler. needed an inexpensive cooler to replace the broken one on an old emachine I was fixing up. kept the e4700 at 30c idle and no higher than 57c after 10 loops of cpu burn. (room temp was around 80f used as-5)

Cons: none but a 4pin plug would've been nice.

Other Thoughts: wouldn't recommend it if you were going to do any oc'ing but for everyday use works great.
also, you might want to go with something a little better if you have a hotter running cpu as this is an all aluminum cooler.

Pros: Easy to install, it screws in to a backboard behind the motherboard (I re-used the one from my last fan which was a similar model.) Comes with a packet of thermal compound if you don't want to buy a separate tube.

Cons: None, works great!

Pros: It fits
Cheap replacement for weird dell motherboard

Cons: doesn't cool very well

Other Thoughts: I purchased this because I salvaged a dell Foxconn 775 mobo that was missing a CPU cooler. Unlike my other 775 boards this one had a build in non removable back plate so none of my CPU coolers could screw into the back plate and be snug with the CPU for heat transfer. This one does and that is why I'm using it. Do not try to overclock with this! It has a tough time keeping my Intel core 2 EX CPU under 50-60 at idle.

Pros: none

Cons: The back plate is a joke. It's made out of flimsy plastic composite and it's not properly threaded for the screws.

Other Thoughts: You get what you pay for.

Pros: This cooler has more airflow than a stock LGA775 cooler and has less restricted airflow as well (fins aren't as narrow.)

And while it isn't silent by a long shot, it is considerably less annoying than the stock Intel cooler. The Intel cooler has a very annoying whine at full throttle from the un-ducted fan.

Cons: First, this cooler cannot cool the TDP it's rated for. The specs don't give a concrete TDP limit, but it does say it will cool a "Prescott Pentium 4 3.6 GHz" which is 115W. This cooler absolutely will not do that, in fact it has trouble with anything over 65W. I have it on a Pentium 4 524 (3.06 GHz, 84W) and it will go over TCase while idle and near 80C under load.

Second, the mounting system is extremely hazardous. The screw bolts are made with an extremely poor quality metal and are anodized with an extremely thin layer of expensive metal to give it the chrome look.

The problem with this is that when you start screwing the bolts into the mounting bracket, metal shavings start flying everywhere. If you aren't very careful about protecting the motherboard, some metal shaving will inevitably go somewhere it shouldn't and destroy the motherboard. I had to learn this the hard way.

The way I found to stop this is to pinch a slightly damp cloth around each bolt as it's fastened to the bracket to catch any metal bits that come off. You have to do this every time you install or remove the cooler.

Other Thoughts: This is just your average LGA775 cooler, it's about as bad as the stock Intel cooler, but trades blows with it in different areas. They're both awful coolers but I'd pick this over an Intel cooler even with the metal shavings problem due to the annoying screaming of stock Intel coolers.

But at this price, you can get a much better cooler so you should only get one on sale.

Pros: Newegg, heat sink itself

Cons: Fan, tech support for warranty service

Recently purchased on 2.16.2014. I've noticed that since installing, that occasionally, when the PC is turned on, the CPU fan does not start (as indicated during the POST with a CPU fan failure alarm and through visual inspection). Other times, when it does start, the fan RPM reporting seems very erratic, sometimes reporting up to 5000 RPMs and as low as zero (0). I've seen this erratic behavior with several sensor tools, as well as in the BIOS.

Contacted their tech support, but they've been non-responsive.

Other Thoughts: Won't buy MASSCOOL again, even over a $10 fan.