Dark Rock 4 + additional 120 fan, any benefits?

[gedggd]

greetings

will Dark Rock 4 cooling performance will benefit if im going to use additional silent wings 3 fan (my research suggest that its the only 120 fan it will support)

my idea is OC 8700k to 4.7 or 4.9

any ideas? or its just a waste of money since it will not make any real difference ?


Thank you

 

[photonboy]

The difference is unlikely to be very large. Perhaps one or two degrees.

I've experimented with my 2-fan Noctua NH-D14 as well as seen many reviews of similar products where the 2nd fan makes little difference, especially if there's good CASE COOLING already such as 2-fan intake and at least 1-fan exhaust near the CPU.

(two fans DOES make a difference when the design is optimize for it such as the Dark Rock Pro 4 where the air for each fan is then pushed through its own heat sink stack, but where it seems to make LITTLE difference is a single stack where the 2nd fan essentially just SUCKS no pun intended rather than being there to push air through a sink)

On the other hand a very SMALL VOLTAGE CHANGE can make a HUGE difference in power draw and thus the temperature at the same fan RPM so worst-case you get to say 4.8 instead of 4.9GHz or however that works out (too many variables such as room temp).

80degC is Intel's recommended max sustained temperature for those CPU cores BTW. I would use a real-world test like Handbrake at 100% CPU usage for at least 10 minutes to establish a fan profile (at least 10 minutes to establish thermal equilibrium).

 

[photonboy]

BTW there's a "Dark Rock Pro 4" that has two fans already. I'm not clear if you already have the parts.

Other: if you have no side window and don't care about the looks the Noctua NH-D15S is (IMO) the best air cooler for the i7-8700K.

 

[geofelt]

How high you can oc a 8700K is determined by your luck in getting a good chip.
I think all will meet your target.
The main question is what vcore will be needed to sustain your multiplier.
You are likely to run out of safe or comfortable vcore before you run into thermal limits.
That limit will be in the 1.3-1.4v range.

What is your case and fan arrangement?
What is your graphics card?

If you already have the parts go ahead and oc and see how you do.
You can always add a fan later.
My guess is that adding a fan will not make any meaningful difference.

 

[gedggd]

thank you for the answers, i already have Dark Rock 4, (dark rock 4 pro is out of my budget, so does Noctua) other parts on the way.. but im just curious about the benefits of additional fan.. my case will have 2 fans( one for intake , one for exhaust) maybe the better option is to buy additional case fan for intake? i will not use any dedicated graphics card at the moment..

 

[geofelt]

If you are going to buy another fan, I agree with using it as an added front intake.
The cooler you have now will be good for anything you want to do with it.