Pros: Lightweight for the size, nice quiet fans! I turned on the stock fan/cooler on my GIGABYTE Radeon HD 4890 just 1 time, and knew I would have to replace it due to noise. This cooler fits just fine on a 4890 (since they are the same layout as a 4870).

Cons: If I could deduct 1/2 an egg instead of a full egg, I would for this issue. The new bracing plate on the back of the GPU that this cooler requires you to use, with the securing nuts, sticks out more than 1/4 inch more than the previous. It made installation into the mini PCI express slots on both sides of the GPU very difficult. I had to remove the metal shroud surrounding my Creative X-Fi sound card to get it to fit, and it misses contacting the board circuitry by about 1/32 of an inch! I also wish it had an option to allow software fan control instead of being stuck with the manual dials. My PC is in my desk, and I can't adjust the manual fan dials without some astounding acrobatics and limb dislocation.

Overall Review: People site that the cooler has a loose feel on the GPU. I used the small copper spacer that comes with it (Arctic silver on both sides) and it is very secure. The cooling fins are very thin (easily bent) and somewhat sharp.

Pros: Cools very well Very quiet

Cons: VRM Heat Sink Adhesive bad

Overall Review: Great Cooler. I replaced a stock ATI 4850 cooler. Installation was easy, used my own thermal paste for GPU. Fans very quiet even on full speed. I tried to hear a difference in the fan noise between full and low speed settings and could not even hear it over the other fans on the system on either settings. This cooler works great. My idle temps went to 33-35C and under load around 40-43C. Overclocked to max via ATI Overdrive it stayed around 50C under full load. The VRM heat sinks WILL FALL OFF if you trust the heat sinks adhesive. After a thorough cleaning I found several of them either fell off right away or fell off when touched gently. Most people installing these on an ATI card will use the stock coolers heat sink for the VRM chips and JUST use this for the GPU. This wasn't an option for the 4850. I chose to use small blobs of hot glue to adhere each side of the heat sinks to the card. This worked GREAT and was very easy. I HIGHLY recommend this method to sec

Pros: I am so impressed with this thing that I had to jump on here right away to write a review. My idle temps dropped from 64C to 45C and is my computer no longer sounds like a hair dryer. It's virtually inaudible. Thank you, thank you, thank you! I am sane again!

Cons: Requires two 3-pin power connections. Since all of the 3-pin connectors on my motherboard were in use I used the included molex adapter. Unfortunately this solution required attaching a whole new modular cable to my PSU increasing clutter in my case.

Overall Review: I installed this on my Powercolor Radeon 4870 and used Arctic Silver 5 in-between the GPU and the heatsink. I did not use the included copper spacer. I highly suggest cleaning and priming your GPU and RAM with the Arctic Silver Articlean kit.

Pros: Easy to install on my Asus 4850. Used some Arctic Silver and now my video card runs 30 degrees cooler while playing video games

Cons: Unable to plug both 3 pin fans to 4 pin video card fan header. This is just a minor annoyance. Since you can't use the fan header on the video card it requires you plug them into motherboard fan headers or the power supply. You will not be able to control the fans through ATI or Nvidia software.

Overall Review: Make sure you read the directions carefully and understand how to remove the stock cooler that comes with your video card. Cooler requires to power inputs for each fan (3 pin). You probably will have to plug in to motherboard fan headers for the power supply.

Pros: Much better cooling than my stock cooler, very easy to install, thinner than others.

Cons: Effectively makes video card longer--make sure you have space for it in your case.

Overall Review: I bought this after I saw my 8800 GT (650 MHz) reach 102 C while playing Dead Space before I freaked out and shut it down. After installing this, my idle temperature decreased from 54 C to 43 C and under load (while playing Dead Space), I have not seen the temperature reach more than 55 C. I didn't use the thermal paste that came with it; I used some Arctic Silver 5. It also does make the video card longer. Luckily the extra length fit into an empty hard drive bay in my case, but it may not be the case for everybody.

Pros: This thing actually works. Setup was a bit difficult (see cons) but it lowered the average temperatures on my ATI 4850 (manufactured by HIS) by over 10 degrees Celsius. This thing is whisper quiet, especially when compared to the jet-engine that came stock with my card. The price-point is pretty good also.

Cons: Setup is somewhat difficult. First of all, the instructions that come with the device are terrible; it is difficult to really understand what they are telling you to do. The "stick on" heatsinks that come with the device are low-quality at best, and some of them actually fell off after installation (about one in ten eventually came off). The thermal paste that comes with the product is dubious at best, I would recommend buying your own, although I did end up using the stuff that they sent with the product and still had a decent heat reduction (see above).

Overall Review: I would recommend buying your own set of small heatsinks as well as some thermal paste to supplement this product, you will most likely get better results than I did. Also, if you do not have reasonable tech experience, I would stay away from this product since the instructions are no help and you will have to end up winging it. If you know what you are doing, and want a quiet solution to a GPU heat problem, however, I highly recommend this product.

Pros: Easy to install, temps good and low and cant even hear it with the rest of the computer on.

Cons: Could have got her sooner, but that's me being impatient.

Pros: The coolers are very easy to install. Please Use Arctic Silver 5 or Gelid Extreme PAste. Also order the Enzotech heatsinks and apply where required for your board. The Fantastic part is the Prior to Install the Fan on my HIS Turbo Ice! IGHZ sounded like a Rocket ship taking off on 75% and I could only keep the temps down to 45 idle and over 60 on game in 75% Fan. With the Sythe idle is 37 and on game 51 on max setting. Keep n max setting. You cannot hear these coolers over your case Fans. I have two one on both Crossfire HIS 4870 cards. I have a HAF 922, so room is not a problem. they stick out about 1/2 inch more than board length.

Cons: Only one. The Fans should be should not have been Hard wired to the Fan control. The Fan control wires go in to the Fan themselves so you cannot Hot plug or change the fans without doing an external fan control if you change the fans. The fans are 100x100x12. I will try to install normal 100x100x25 to see if I get even more cooling effect.

Overall Review: Work great for their appearance. They do rock on the VGA GPU even when tightened down. A little scary, but they will not come loose. Alos not. You have no problem with crossfire or SLI. You wil have to get a flexible ribbon for three -way, due to the top of the cooling fins covering your second crossfire or SLI connection.