COOLER MASTER R4-C2R-20AC-GP Case Fan

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This fan moves a decent amount of air. I added it as an intake fan for my case considering that it lacked one and necessary. The fins look kinda low cost but it has had no issue operating at it max rpm of 2000. It's sucking so considerably dust into my case. I hate how dusty this apartment gets:( Excellent fan. Great price tag:)

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Cool Searching, moves a lot of air. Kinda annoying. It moves the exact same amount of air as my stock XION case fan, but it's truly louder. It makes a semi-loud humming noise. 19dba, no way...Also, the 4-pin connectors it came with suck. Like honestly I virtually had to obtain a new 4pin connector for my gfx card cooler since the pins in the connector that came with this fan aren't the same size or are crooked and bent the pins in my heatsink connecter. Pretty frustrating. Wish it was a tiny quieter.

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BLOWS FAIR Quantity OF AIR ,WISPER QUIET , SMOKED COLOUR BLADES THEY HAVE A Tiny VIBRATION WHEN BLOWING AIR UP , I GUESS THERE NOT An ALL position FAN .no led holes to add leds later loss of one particular egg for vibration and no led holes ...would have rather obtain the blue led one particular for the identical price tag but newegg was out ..

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Would purchase again for sure, it was used in my roommates computer as an intake and it helped drop  his ambient temps quite nicely. I have 2 of the green LED version, one added to my Hyper 212 Evo as a pull fan and it works awesome, the other is used as intake like my roommate. 4stars

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Move lots of Air Loud but i knew that when i purchased it I put them in a Cooler Master 1000. A ought to for this case

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Moves alot of air, quite quiet for 70CFM. Newegg stated CFM incorrectly. It is 69.69CFM as the manufacturer states. (Someone likes 69 at CoolMaster)

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great airflow at 75%speed and quiet wire could of been longer, my fan plug is in front of the board close to sata ports :/ (bad board design lol) none

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Wonderful fans, lots of airflow and still quiet. They are only 69cfm NOT 90cfm as claimed in the description. Coolermaster masters the cooling.

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Nice design easy to mount and the 4 to 3 pin adapters included are handy Has a rather high whine to it

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There's a lot of air now going in my case now. Not speed variable. Noisy a bit. I purchased a speed controller on my favourite auction website so I can slow a bit this air beast :)

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Very QuietOK priceMove A LOT of aircomes with the three pin as well as molex converter you get what you spend for (see other thoughts)The screw holes are not greatcan make noise (see other thoughts) i ordered three of these fans. On two of them the holes are not appropriately spaced so it is incredibly hard to get the screws by means of the grill then the fan (i ordered the grills seperate). I managed to get them through but it created this sound like it was speeeding up then slowing down. following removing one of the screws (leaving three in) there had been no issues with it at all and the 3 screws fell in adequately.So if the holes don't line up perfectly just leave a single screw out and all is nicely

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Excellent Fan! It doesn't feel cheap and moves a mass amount of air! -does it's job as a fan and does it nicely, it Genuinely keeps my case cool.-these are three pin fans, but also consist of a three pin to four pin connector-Not Really a Pro for some, but if you like jet engines, they sound like a jet turbine firing up when you turn on your laptop lol. WATER COOLERS/STEALTH NINJAS BEWARE!!!!These fans are NOT Quiet! By ANY Indicates! These fans are of superb develop top quality and move mass amounts of air, but I have no thought where Cooler Master came up with the 19 Decibel rating! If you are into stealth fairly situations, these are not for you! i have two operating in my storm scout case, and these fans even mask my GTX 260 with its fans running at 80%! These are BY FAR the loudest fans in the case! So if you are stickler (like myself) for noise, pair these up with a fan controller. If not, then appear into Sythe Slipstream fans. Even with the cons mentioned above, I enjoy this fan. I am at present buying a Sythe Fan controller so they wont be audible more than my tv/surround sound method.All in all, if you aren't a stickler for sound, purchase these fans! they will Actually maintain your temps down! I have one particular pointed at my GTX 260 and it dropped temps down by 5C! Just by adding A single fan! I enjoy them so a lot that I am giving them a second likelihood with a fan controller. I will update my findings when it's installed. (Until then, I can't justify knocking down one more egg for sound EVEN Though it is supposed to be "quiet")P.S. don't listen to some of these evaluations. If they say this fan is quiet, they have certainly Never ever had (or been around) a water cooled technique.

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Some what very, moves superior quantity of air. Superior develop excellent Not 19 dba. more like 23dba. But once again, I am comparing it to Noctua

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Great style, lots of airflow, quiet, 2000 RPMS Tough to clean. Pulling against a grill causes noise, use spacers. OK, so two of these fans come on the Cooler Master N620 cooler and I was incredibly impressed with them. I recently bought two additional of them and a Scythe fan controller. I took off the stock fans from the CM690 case, on the side and exhaust and replaced them with these. Then I added the stock fans to the top rated of the CM690. Carrying out this dropped my idle temps 4C. Putting these fans against a drill causes noise so if you have them pulling use spacers. I clipped the leading honeycombs to enhance airflow, but I can't run the side one very at full speed with some noise. Blowing against a grill doesn't trigger the noise.

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Moves lots of air Really loud! Sounds like a smaller vacuum! 19 dBA??!! Wrong!

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Fit perfectly into my MasterCooler Tower. Snapped correct into location with no wiring difficulties. none Fantastic price, cost-free shipping.....thanx newegg

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Low-costExcellent Air Flow A bit loud I picked this up to use as an intake and it has done a excellent job at rising my airflow. At 100%, it is a bit loud for other people today, but it does not normally bother me. Good price and does its job.

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Move a lot of air, appears like possibly beyond the rated CFM even. Come with screws and three pin to molex adapters in case you will need them. Good appearance. Simple to mount, you don't have to fight with them to get the screws in. Very loud, loud as the 30db fans they replaced, plus it is an annoying shrill high pitched turbine like whine. Sounds like the Tim Burton Batmobile when I begin up my rig. If you require a balance of good air flow with moderate noise, this isn't what you are searching for. If noise isn't an concern they are a lot of bang for the buck. Going to have to replace these or install a fan controller now as I can't even stand to be in the similar room as this electronic banshee.

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works as expected. no problems and quiet. the power 3-four pin converter was a huge plus mainly because i didnt have any three pin slots left. none two of these on either side of my h50 keeps my amd phenom two x4 965 at an idle 30 C and about 54 C load

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-Particularly Rapid and moves very good amount of air-The Light is subtle but offers it a good touch-low cost -OK, for some reason, if this fan isnt moving at 100% speed, it begins to rattle as if it's not stable. It is really annoying and drives me nuts. I essentially have to set this to 100% in my bios for it to act normal. According to HW Monitor, when this isn't operating at 100% speed, it would go 1200 RPMs then jump to 6000 RPM, then go back down once more, etc and so on. Not certain why-Holes are not pre drilled so you need to drill it oneself. I bought 2 a lot more of these fans simply because I like it's cooling power. I want to see if maybe I just had a negative egg and we'll see if the other two doesnt start off creating noises. I fundamentally have this fan at 100% speed running at 2000 RPMs all the time.

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I bought these for a NAS system that I wanted to keep cool. So far I have had no problems with these fans. I price-matched them down to $5 and at that price, it's an awesome deal. They've been running quietly and very effectively.

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Excellent fan. Pushes a lot of air for it's size. No leds is nice. None so far.

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Decently rather and also moves a decent quantity of air. For some odd cause, these particular fans refuse to run effectively when wired in series and powered off a 24VDC power supply. I've attempted it with two of these fans and also one of these fans and one from yet another brand. The other brand fan runs fine and these "try" to spin but just make some noises. I have also purchased a number of of yet another brand and have them wired in series and powered off the identical power supply. Operating beautifully. I can only assume these fans have some circuitry in them that keep them from becoming run in a series connection setup.

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Moves air Louder than two stock case fans Great CFM/dbA/$ ratios but Newegg has it written as 90cfm thats a lie the box specifications are 69.69 cfm Manufacturer Response:Dear Valued Client,We apologize for the inconvenience you have had. As it states in the specs, 90 CFM is the maximum the fan can run. 70 CFM is the stock speed they run at which is 19dba. At 90 CFM the dba rating is 23 dba. You will need a fan controller to get up to 90 CFM. If you would like additional information on the fan you can contact us through live chat. If you are getting trouble with the fan you can rma it on our rma link below.Respectfully,CMUSA – Client Support.External Link(s): Live Chat| RMA|

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Move a lot of air. Low cost. Loud; Not 19db.