Hyper 212 second fan - worth it?

Soldato
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Anyone running two fans on their hyper 212? Is it worth it - they're pretty quiet... temps are a little high when pushing the 2700k at the moment, so without getting a completely new cooler, wondering if it was worth just picking up a second fan.
 
Isn't it funny that this cooler still dominates after all these years! I run mine with two fans but I haven't bothered to test before and after temps because it's a boss.
 
I saw a review once which showed no benefit in adding a second fan. How high are your temperatures now? Is it really a problem?
 
2nd fans usually make little difference, but it depends on how good the single fan is. Low pressure fans benefit from being stacked in push/pull on a tower. This is because the static pressure rating is increased by stacking with a flow staightener between them (the cooler) This means a 1500rpm fan ratied at 60cfm and 0.8mmH2O static pressure (static pressure is maximum pressure fan reaches when it's airflow stops moving). When fan slows down it bullds less pressure .. so at 1000rpm will have a static pressure rating of maybe 0.5mmH2O. Now if cooler has lots of resistance (like about 0.4mm H2O) the fan is only 0.1mm H20 stronger than resistance, so is moving very little air though it. When we go push/pull the pressure rating goes up to by about 0.4mm H2O and we now have 0.8mm H2O static pressured rating against the 0.4mm H2O of cooler and get more air movement.

But if the fan is a good fan with something like 1.4mm H2O rating and it is slowed donw it will still have something like 1.0mm H2O rating and eaisly overcome the 0.4 resistance of cooler .. meaning going push/pull makes little difference.

While Hyper 212 were decent coolers for their low price in their day, there are now many coolers just as good or better for same or lower prices .. and most of these have much better mounting systems.

Now old is the cooler and when was the last time it was thourally cleaned?
 
I'll second the opinion of not worth the extra fan. I've seen many reviews that say the cooler performs basically no different with the second fan added.
 
Your time and energy is better spend monitoring cooler intake air temp and improving case airflow so cooler is using air 2-5c above room ambient, not 15-20c warmer. Here is a basic guide to improving case airflow. https://forums.overclockers.co.uk/showpost.php?p=26159770&postcount=7

Many moons ago I was contemplating patenting completely ducted airflow (kind of like BTX "plus"). Looked too much hassle at the time. I still think it's the best solution for air cooling.
 
LOL
You mean something like old Mac Pro? :D

A well setup air cooling system is as good and much quieter than any CLC I know of .. and way more dependable, especially after a couple of years of use. After all there is no pump to fail, no aluminum to corrode, now weak pump with an amp rating lower than many good fans to fail .. the only thing that can fail in an air cooled system is fan .. system will still work while CLC system is DOA until new cooler is installed, any fan can rubber-banded on until replacement arrives, and a fan costs a fraction of what new CLC costs, even if it can be RMA'ed and you need to use your system you have to either have another cooler on hand or buy one.

And a top tier air cooler costs less then a CLC that cools similarly, but at 3-6 times the noise level.

The only logical option (in my opinion) are AIO like EK Predator and Swiftech H220 / 240/320 X and X2 / X2 Prestige. These are really entry level component systems pre-assembled and filled at factory.
 
Not too familiar with Macs. I've looked at water cooling stuff recently, i'm not convinced the heat exchangers that bolt to the CPU are well balanced for the speed of water flow. You've got a huge radiator cooling down water heated up by a relatively small heat exchanger.
 
The small heat exchanger (waterblock) can draw way more heat because of the volume of coolant flowing through it combined with the heat differential between CPU and coolant compared to coolant .. and air and heat absorption rates of water versus air are the reasons radiator needs so much more surface area than waterblock.

CPU is something like 70c transferring heat into coolant entering at about 30c an leaving at about 40c .. a 40c differential to 30c out
40c coolant entering radiator with 23c air is only a 17c differential in to 7c out.

Water can absorb about 3000 times as much heat as the same volume of air.

Hopefully the above helps you understand why the waterblock area is so much smaller than radiator area.
 
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