After building your first pc, there are a few things you might want to address for instance
if you're an overclocker you might want to tweak multipliers and vultures in your bios and you'll
probably want to install graphics drivers unless you're a madman these are just some of the usual
steps us computer enthusiasts run through after a fresh boot it's more like a ritual just a routine
that we don't even really think about but there's one step that's often kicked under the rug just
kind of overlooked in general especially by first time builders and that's adjusting fan speed
that's what we're going to talk about in this video i'm going to walk you through step by
step how to set one up so that you never have to worry about it again stay with me to get rid of
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skgs for a sweet discount you might notice after turning your pc on for the first time that uh
yeah your fans are well a bit loud and most of the time this is a consequence of biospan curve
defaults in this case for some reason it's set to full speed that is definitely not needed with
this kind of cooling most of the time this is a consequence of bios fan curve defaults
which are typically far from ideal so each time you reset your cmos or build a brand new system
you'll likely end up with this curve that just doesn't make any sense and most of the time it's
again going to set your fans to higher operating rpms than you really need especially at idle when
you don't necessarily need active cooling to that degree and they'll be operating like in the case
of this pure wings 2 fan here well over a thousand rpm each these can run at below that 1000 rpm it's
possible to do that here and this is a 4-pin fan it operates in pwm we have a video talking about
pw if you want to know more about that and how it works and how you're able to get lower operating
rpm or effective rpm as a result of this but this fan can ramp all the way up to 2000 rpm it says
so right here on the back and let me tell you um i really like purewings 2 fans and especially silent
wings 3 fans but they don't sound very good not that any fan does at 2000 rpm now as we said there
are multiple ways to address this including with many third-party programs like corsair iq and nzxt
cam but these are lower level solutions that won't kick in until the apps themselves have been opened
meaning these settings won't take effect until after you've already logged into windows and
allow these programs to open and run in the background my go-to for fan control is in the
bios for this simple reason if i can help it right i'd prefer to keep as few programs running in the
background as possible when i'm just on the computer doing anything at all though this can
be difficult to avoid admittedly if you've also got say a corsair aio and some corsair ram right
their iq software is going to kind of integrate everything including rgb control into one suite
take it or leave it and of course there's always a case where your motherboard is either just too
primitive or too old and it doesn't have an intuitive fan control platform sort of built
into the uefi or bios and in those cases yes you'd have to use iq or cam or whatever your
fan curve suite of choice is i suggest one that is not too heavy on system resources
though especially if your system is rather weak so bios fan control is a much more passive yet
still direct approach to controlling rpm and that's what we'll be taking advantage of in this
video although the approach is fairly universal when it comes to third-party platforms as well
to kick things off restart or power your system on while spamming the delete key this should take
you to your motherboard's uefi from here navigate to the hardware monitor tab or maybe it's a q fan
tab a lot of motherboards call this different things and i'm kind of annoyed by that it might be
under the system tab or the motherboard tab it's kind of a mess refer to your manual if you are not
sure or just start navigating around eventually you'll find it next you should see a tab similar
to this one it's called something like fan tuning or again q fan there are often two kinds
and you'll want to be careful about which one you select there's a certain kind of tuning and a lot
of motherboards where the board itself will kind of see what the lowest operating rpm of a fan is
and it'll do this for each fan or each header on the board and then determine what a stable
fan curve should be based on that lowest operating rpm it works okay but it's still not as intuitive
as manually controlling the curve which i'm going to show you now so if you found this
manual control tab you should see a graph with multiple line segments like this and like this may
be a bit daunting on the surface but it's actually straightforward along the x-axis we've temperature
in degrees celsius and along the y-axis we have the selected fan duty cycle or operating speed by
percent usually each of these points represents a target fan speed for a given temperature
that's either the cpus or the motherboards some boards are even fancier and include
other hotspots and things but typically instead of the cpu and motherboard and i like to use
just the cpu temps in most cases since they often go hand in hand with motherboard temps anyway
and you can see how as we slide this dot upward we're telling our computer to adjust fan speed
accordingly if our cpu is at 40 degrees celsius we may only want a 30 or 40 percent duty cycle
but if our cpu gets quite hot we'll of course want a value much higher than this so you'll often see
this chart trend upward with a positive slope as it really makes no sense to lower fan speeds
as system internals heat up that would be um yeah a bit counter-intuitive the goal is to keep temps
as low as possible right without compromising too much in the way of fan speed and noise now
depending on the fan and header you may be able to set a very low first target so something like
30 degrees celsius and i don't know a 30 percent fan load this is something i always try to start
with if i can and then i create a trend sort of like this as we approach 70 or 80 degrees
celsius with the slope gradually increasing the hotter the system gets this should keep
your system extremely quiet at idle and moderate load right however if things do get too hot we've
the last resort segment on our fan curve that bumps things up to 100 some maximum cooling
potential some motherboards allow for the addition of extra segments even in this chart
so you can get to higher degrees of precision if you want although i found that a solid three or
four points is generally enough to make fan rpm predictable and tolerable under varying degrees
of load you'll also want to take cooler size and tdp into consideration here since cpu coolers with
smaller heat sinks and fans will likely need to run more aggressive curves than those with
larger layouts you may not in those cases want to start with say a 30 duty cycle maybe a 50
or 60 will do now for a bit of added clarity the x-axis here is pretty straightforward right i mean
that's just your cpu temperature at least what i would recommend setting it to cpu temperature but
the corresponding fan load will vary depending on the make model and whether it supports pwm
see 40 load for one fan may not result in the same rpm as forty percent load for another also we have
an entire video discussing what pwm is again and how it generally is superior to voltage controlled
fans which are three pin fans but in essence this modulation allows for a lower operating
rpm than your standard three pin which means you can essentially fine-tune these a bit more bring
operating rpms down to again that 30 target you probably won't be able to do that with a voltage
fan now once you've finished calibrating the curve you'll want to select the headers
to which the curve applies in general i like to use the same curve for all case and cooler fans
say maybe in the event i'm custom cooling with larger radiators depends on the setup and as for
pumps which this build has i usually run them at either 80 90 or 100 rpm constantly now you might
be thinking well greg that doesn't sound too healthy a pump shouldn't be running at 100 all
the time actually that's what they're designed to do now it is possible that for them to run
with a curve similar to fans right where they kind of increase in slope as temperature increases but
i prefer a constant speed for the possibility of less stress and variation in fluid velocity
generally you want heat removed from sinks as quickly as possible and the medium responsible
for this and aios and custom loops is generally water or glycol-based solution and the pump is
what accelerates that process my rule of thumb if you can hear your pump at 100 load maybe lower
it by 10 increments until it becomes virtually inaudible but still widely effective most acetech
pumps which this aio uses are already relatively quiet at 100 load in fact it's at 100 load now
and you probably can't even hear it now some d5 and ddc pumps may need a bit of tweaking which is
why i said just back off in 10 increments until it is no longer super audible the d5 pump in my most
recent uh jesse pinkman custom loop was pretty loud at 100 load so i backed it off to i think 70
and i'm pretty happy with that and once you've saved these configurations in your bios or uafi
whenever you start your pc your fan curve should kick in almost immediately you shouldn't need to
rely on any third-party software you can even save profiles to a thumb drive or the board
itself in some cases for quick swaps depending on your environment this will also help to restore
settings in the event you need to clear your CMOS and your board doesn't retain custom settings by
default hopefully this straightens things out a bit for first-time builders and those who
need a quick refresher never hurts again there are multiple ways to fine tune fan curves but
this is the way i've always done it at least with boards that you know
pack the support it's simple it's quick and it's low profile that's all for this one if you enjoyed
it or learned a thing or two be sure to click the like button that would be appreciated and
consider subscribing if you have not already also leave a comment down below letting me
know what you want to see next on the channel my name is greg thanks for learning with me