- Let's demonstrate how to calculate the power that we need
and we'll be using a power supply calculator to figure
out the wattage, the total wattage required
for all the components within a computer.
And I'm just going to make up the system as we go.
And there's several power supply calculators out there.
Here, we have power supply calculator
at the Cooler Master website
and have another one here at OuterVision, which is good
if you're going to be doing video card overclocking
and other types of overclocking, but to start
we'll leave the overclocking out of it, out of the equation
and we'll start building our system here to see how powerful
of a power supply we'll need.
So we're going to assume that this is a desktop computer
and we're going to use an Intel CPU
and going to go, as far as the recording of this video,
this will be a newer system
and we're going to use the LGA 2066 socket
and we'll select something here.
Let's try the 9820 Core I9,
that's a pretty powerful CPU.
TDP, thermal design power,
generally, they recommend you're at 90%
if you're going to be doing overclocking or really
taxing your CPU or heavy duty gaming and stuff
and heavy duty design, those types of things, lots
of video rendering, you might want to bring it up
to a hundred percent TDP.
Okay, we'll select our memory
and we'll say that we're going to have, let's say four
and we'll say four,
four gigabyte.
Well, let's bring it up to eight gigabyte four
eight gigabyte DDR4 Modules so that we can have
a quad channel installation.
Okay, then we'll select our video card.
I'll go with Invidia, you know?
Yes, I'm doing Intel and Invidia for this
and we're going to do one card.
Let's go with say the GTX 1080.
That's a good place to go here.
Only one card for now,
we're not doing any SLI, but when maybe we'll show
that after.
Okay.
So a video card, if we do a second one
we'll see how that goes.
Okay, storage.
We definitely want to have an M.2 and sorry
for the dropdown menus there.
And we'll do one M.2
and then as a secondary type of thing, we'll do
an SSD, maybe even that runs the operating system
and maybe you have games running here or design programs
or video programs or whatever.
Optical drives,
well, you may or may not have one.
It's not going to make that much of a difference.
We'll say we'll put in a combo drive here, okay?
And it could be
that you want to add additional cards, TV Tuners,
sound cards, additional ethernet cards,
we'll leave that blank for now
and we'll just assume that the motherboard has
all the connectivity that we want for the time being.
Okay.
And they give you options
for bitcoining modules and all kinds of other stuff.
You might also need some additional devices
so let's just say that we have four USB 3.0 devices
standard keyboard and mouse and fans,
chances are we're going to have several fans.
So let's say we pick two additional,
120 millimeter fans, no liquid cooling yet
and we'll say computer utilization.
We'll leave that as eight hours per day, okay?
So to review, we've got a Core I9
with an LGA 2066 socket running
at 90% TDP, 32 gigs altogether, four sticks
of DDR4 quad channel setup, a GTX 1080 video card,
an M.2 card for our SSD
and then a separate SSD,
the 2.5 inch SATA drive, a combo optical drive
and four USB devices and keyboard and mouse, two fans.
So then we can go down and calculate it and it tells us,
hey, recommended wattage, it's 567.
Now a good engineer, always over plans
a little bit, does a little bit higher than what
you really need.
So you definitely would want a 650 watt.
They recommend a 750 watt
and they give an example here
but let's say we did go at 650, probably would work.
Here's an example of a 650 watt power supply from CORSAIR.
And this is a real heavy duty power supply, long lasting,
an efficient, quiet power, quiet fan,
and it's partially modular.
You've got connections going out to the motherboard
and so on
and then some inserts here, some modular inserts
for devices.
So that's a 650 watt, but we could always increase that
and go with, say 750 or 850.
They're recommending a 750.
And generally that's probably what I would do.
I would go about 25% higher than what I think the wattage
is going to be.
Now you can go and look at each of these devices and figure
out, you know, what each of these devices will
use individually and then add it together as well.
But these calculators do a lot of the work for you
For example the TDP, the maximum TDP
for the CPU I'm using on this computer Core I7, 5820K,
the computer I'm working on right now
that is a TDP of 140 watts.
So you could add all that stuff together individually.
But let's say
that you wanted to build some type of gaming system,
now you might not go with Intel at all,
you might go with AMD
but we'll stick with the Intel platform for now.
And so we'll bring this up to the 9900 chip
which brings this up to 3500 megahertz,
we'll increase the TDP to a hundred percent.
You know,
if we're going to do super duper gaming, we'll do that.
We'll leave the ram as is
but we'll include a second video card
and we'll turn on SLI
so we can actually select that.
And we'll do another GTX 1080, 'cause if you ever do this
you want the video cards to be the same.
And SLI means that you're going to connect the two together
so that they can work in conjunction with each other.
Perhaps we'll do two M.2s.
Maybe they'll be set up
as raid zero and then a separate SSD altogether.
And you know, to really get into this, we might include,
say a dual port ethernet card or a quad port
and then we could do link aggregation
and have a much better network connection.
So let's say we'll add something like that as well.
And you know, we might include a liquid cooling system.
You might not need these fans.
I'll just change that to one for now.
Okay, and we'll calculate our new, more powerful computer.
And look at the amount goes all the way
up to 780 watts required
so they recommend a thousand watt PSU.
And usually that's pretty common.
That's typical.
If you're going to have a gaming computer
or you're going to have a heavy duty computer,
aided design computer or something like that
then a thousand watt power supply is generally
what you're going to want.
And here's the other thing, that's going to utilize six
or seven AMPs on a circuit.
So, really, if you're going to do this kind of thing
it's a good idea to have a dedicated circuit
for your computer workstation as well.
Right, so there's a little bit about power calculations
and always figure out what the wattage's going to be
but plan to go beyond that.
Grab something that's going to be about 25% more powerful.
And especially if you're not sure later on,
you might add a video card or something like that
and you really don't want to have
to add another power supply
and change the power supply out and all those connections.
So think for the future as well,
look into your crystal ball and see what you might use.
All right?
So there's a little bit about power supply calculations
and that's it for this video.