Pros: 30 degree celsius drop. All my temps are taken from EVGA Precision X.

Cons: Takes up FOUR slots with two 140 mm Corsair fans. Yes, that's with the GPU included.

Overall Review: My PC runs dual SLI, EVGA GTX 770 3778 KR. The primary GPU is where I installed this on. It was running 20+ degrees C higher than my secondary GPU, CONSISTENTLY. Upon installation, it now reads 10 degrees C lower than my 2nd GPU. Need I write more for you to buy this setup? Didn't think so. Be careful, the brackets hold fans up to 25 mm.

Pros: Just wanted to give my results of this amazing gpu cooler. I have a GTX 680 4gb video card. Stock temps reached 33* idle and 67* load playing HoN and SC2. With this cooler I reached idle temps of 26* and an amazing 37* load playing the same games. With this kind of performance the price you pay for the mk-26 is money well spent.

Cons: I have no cons for this gpu cooler.

Pros: Cools the GTX 470 extremely well. Ubuntu 13.04 Unity desktop would run upwards of 85c and the OEM fan would become annoying. With this it is now running the desktop at around 45-48c doing the same thing. Ran Unique Heaven demo at extreme settings for 30 minutes and the maximum temp went up to 67c with the fan adjusted to a very low setting for no noise. With the fan set to max, the temp pulled back to 55c running the demo. Was considering a passive cooled video card to use in Linux, but the performance of them is so low compared to the GTX470. This has been a great solution.

Cons: Big and heavy, especially when fan or fans are mounted to the cooler per the instructions. Makes it almost impossible for SLI/Crossfire. Read the pro reviews and they all say that. Make sure your case is big enough.

Overall Review: When installing, make sure to use a the cleaner called out in the instructions to prepare for the application of the heat sinks on the the vram chips. I did not have the ethanol that was prescribed in the instructions and tried some isopropyl alcohol which did not clean the residue at all. Used automotive brake cleaner on a clean rag. Clean each component multiple times. Without the fans attached on the face of the cooler, I do believe a second video card would fit in the second SLI PCIe slot on the motherboard which is the lowest position. Then the problem is that cooler is in the way of the path for the SLI cable to pass to the second card. There would be a very small gap between the PCB of the lower card and the cooler. I am considering trying it and cutting a small slot in the cooling fins (the heat pipes are clear) for the SLI cable to pass. Then figure out a way to get enough air flow to pass over the cooler. My second 470 is stock configured at the moment. If the case is not an issue, I do believe a person could get both cards configured with a cooler. It would take some modification of one cooler for the SLI cable. The old GTX 470 is a real gas hog and generates gobs of heat so two of them together makes mega hot air. But this cooler is amazing at dissipating the heat away if you can find the room.

Pros: I already knew I liked Prolimatech products after owning the Megahalems (Rev A) for a few years. I loved the quality,performance and one major overlooked area , ease of install. The MK-26 has the same atributes as the Megahalems. Awesome cooling, very sturdy and relatively easy to install.

Cons: The VRM heatsink barely makes contact with cooler on my Sapphire 6970 (reference v2 , no bios switch model). I could slightly bend a fin over if needed. Instructions were ok but not great. Wish they would have short edited how to videos on their website for the common video cards.

Overall Review: Going for a quieting gaming rig I tossed up the idea of a new 7950/7970 with a better cooler than my current refurb replacement 6970 that I got from Sapphire. My stock cooler would idle around 62c at 30% fan which I could hear over my 140mm case fans. Furmark at auto fan control would run into mid 85c range. Gaming would run around 75c. Now I idle at 40c and it is near silent using Prolimatech fans and NXKT fan controller. Furmark now runs at 60c or tops on 65c with fans running 5v. Wow! I love it! Glad I upgraded to my Fractal XL R2 last month. Plenty of room. My cooling will get better when I remove my PCI XFI sound card that is covering up some of the fans. THe cooler only takes 4 slots and I have the soundcard in the 5th slot. I used two zip ties through a corner hole on one of the fans closest to the motherboard and make a straight support putting the block portion of the zip tie behind a hole/slot in the case and simply pulled up the slack so the card sits level with no bending downwards. Works great.

Pros: Originally came from a 7870 with a Gigabyte cooler on it. For those that don't know, Gigabyte's cooler happens to be the coolest aftermarket heatsink from the factory. And Indeed it was.. Until I installed the Prolimatech MK-26. Normally, the Gigabyte 7870 would have temperatures around 51-54c average while the fans are set to a quietness of 4-5 db above ambient. With the Prolimatech MK-26, i'd get 38-41c on average! An incredible improvement! All while keeping the db at 3-4 higher than recorded ambient. Installation was easy as long as you read the instructions and look at the pieces with some thought.

Cons: Can cause some pcb bending if you do not have a pcb backplate or brace on the side . Fortunately the Gigabyte came with a metal brace to keep it straight. But reference cards may not have a way to prevent pcb bending. Instructions can be partially confusing. (for the 7870, I had to use the included black screws that was only said to be for 7970/7950. Note to prolimatech: please put "7000" series to it too !)

Overall Review: One of the possible reasons why it had an incredible temperature decrease could be because of the compatibility with two 140m fans. (two 140mm fans running at equivalent DB's vs the three 90mm fans on the gigabyte heatsink. The two 140's will undoubtedly have more airflow!) And..I wish the black version had come to the US sooner. oh well.

Pros: Bought this to replace the reference cooler on my HD7970. It cut my temperatures in half!!!! I paired this with 2 Enermax 120MM fans and now my idle temperature is averaging at about 24c and my load temperature hasn't topped 37c yet. I played about 2.5 hours straight of Battlefield 4 with all the settings maxed out at 1080P and my temperature never went pass 37c!!!! My original cooler I would see idle temperatures of around 50c-53c and load temperatures of around 78c-80c. So it has drastically cut my temperatures down. The cooler itself has lots of heat pipes, and is of a good solid design. The cooler seems very similar to Thermalright GPU coolers. it comes with a shim to work on the HD7970 which is nice, most aftermarket coolers don't support the HD7970 do to the way the GPU is set on the board. It also comes with some thermal paste, fan clips that allow for 2 120MM or 140MM Fans or a mix of the 2, all the necessary install hardware for most AMD and Nvida GPUs, there is a fan plug that converts 2 3-pin or 4-pin fans to work with a GPUs fan plug, extra heatsinks for the on-board RAM and VRMs too.

Cons: It's big, it barely fit in my Rosewill Blackhawk case. I have less than half a centimeter of space between the cooler and the side of the case. It will not fit in a small case and many mid tower ATX case will probably have problems fitting it in. Some may have bending issues with their cards do to how much the cooler ways. I didn't, but others may. It was hard to get the heatsinks for the RAM to stay on, you really have to press down on them.

Overall Review: Installed on an Visiontek HD7970 3GB Reference Card with 2 120MM Enermax T.B. Silence UCTB12N-R Red LED Fans,

Pros: Great air cooler, you can get water temps with this monster. Quiet if using low speed fans.

Cons: Size, it's huge, takes 4 slots using Prolimatech slim 140mmx15mm fans and 5 slots using 25mm fans. Weight, video card bends if mounted horizontally.

Overall Review: I used it on a Silverstone case, with vertical mount for the video card to avoid the bent problem.

Pros: does a super job on keeping my card below 40 degree at max metro 2033, CS GO, Deus EX.... installation is a bit DIY depends on what you have. S

Cons: Bend Card warning. may not fit on your case