The PC Build Thread

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Lupus said:
Depends on the case, but as many intakes but you'll need almost as much exhaust. So 3 in front, 1, 2 in rear or top
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Why? Air can escape the case just fine on it's own given it's literally being pushed out by the intake fans
 
Archer said:
Why?
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To try push cold air through over the components, you could end up with either negative or positive pressure. Negative pressure has more air being exhausted out then in and positive is more air in then out. You'll never really get to neutral, but I don't think you want to much hot air just sitting in the case so you want cold coming in and hot out.
 
Lupus said:
To try push cold air through over the components, you could end up with either negative or positive pressure. Negative pressure has more air being exhausted out then in and positive is more air in then out. You'll never really get to neutral, but I don't think you want to much hot air just sitting in the case so you want cold coming in and hot out.
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I'm still not understanding, only intake fans will push all air out the case with guaranteed positive pressure which is what you want. It doesn't need to be sucked out. Cases are really small (80L for big cases) compared to the volume of air even a single 120mm fan can provide (±20L/second) so you'll have no air just sitting around (assuming semi logical placement of this fan) due to turbulence introduced by the components in the way.
 
Dan C said:
Nothing new. You can get it from BOB or EBay for about R100. Just note these keys are OEM and not retail.
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CrypticZA said:
They are OEM keys
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You wish they were OEM keys, they are in fact msdn/enterprise keys and they tend to get blacklisted after a few months/years, still probably not bad value all things considered.
 
airborne said:
You wish they were OEM keys, they are in fact msdn/enterprise keys and they tend to get blacklisted after a few months/years, still probably not bad value all things considered.
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How many years ? Had mine for over 5 years now with no problems.
 
Archer said:
I'm still not understanding, only intake fans will push all air out the case with guaranteed positive pressure which is what you want. It doesn't need to be sucked out. Cases are really small (80L for big cases) compared to the volume of air even a single 120mm fan can provide (±20L/second) so you'll have no air just sitting around (assuming semi logical placement of this fan) due to turbulence introduced by the components in the way.
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Nope intake fans bring the cool air into the case, but then where does that hot air go? As it's now warmed up, you're correct pc cases are small and you're now filing it up with warm air that can't be vented out. So if you only have one fan, it would be better as an exhaust.
Warm air also rises so it's better to have the exhausts higher up, you also have the heat from the power supply blowing into the case, plus the GPU and the CPU fans.
So if you can have inlets and exhausts.
 
Dan C said:
How many years ? Had mine for over 5 years now with no problems.
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Well you should be buying lottery tickets then mate, get on it!!

If the account the keys are linked to gets blacklisted then all the keys that the account holder sold which fall under that account get blacklisted. It seems it's a matter of not if but when.

Have you actually checked what type your key is, it's easy to do with a key checking tool?

5yrs ago the selling of msdn/enterprise keys wasn't as widespread as it is now, so you may have got lucky and in fact do have an OEM key as you claim, which generally you won't have any issues with.

And you can use any legit/oem Win 7 or 8 key to install 10 or 11. Which is also an option if you have an old PC or laptop lying around, if it's a branded computer like a Dell etc with Win 8 even if there is no licence sticker you can extract the license key out of the bios.
 
airborne said:
Well you should be buying lottery tickets then mate, get on it!!

If the account the keys are linked to gets blacklisted then all the keys that the account holder sold which fall under that account get blacklisted. It seems it's a matter of not if but when.

Have you actually checked what type your key is, it's easy to do with a key checking tool?

5yrs ago the selling of msdn/enterprise keys wasn't as widespread as it is now, so you may have got lucky and in fact do have an OEM key as you claim, which generally you won't have any issues with.

And you can use any legit/oem Win 7 or 8 key to install 10 or 11. Which is also an option if you have an old PC or laptop lying around, if it's a branded computer like a Dell etc with Win 8 even if there is no licence sticker you can extract the license key out of the bios.
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You are confusing OEM with retail. Stop day drinking
 
Archer said:
I'm still not understanding, only intake fans will push all air out the case with guaranteed positive pressure which is what you want. It doesn't need to be sucked out. Cases are really small (80L for big cases) compared to the volume of air even a single 120mm fan can provide (±20L/second) so you'll have no air just sitting around (assuming semi logical placement of this fan) due to turbulence introduced by the components in the way.
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Internal air circulation, there is no guarantee that air comes in and out like an assembly line, you can have some hot air just doing circles in the case while some cooler air escapes out doing nothing. Although the inside of a case won't become a perfect pressure sealed container, air can build up and compress resulting in (whatever unit quantity you want to measure in, pascal/psi, liter, moles, whatever) quantity of hot air stuck in the case (you get to an equilibrium where hot air expands its occupying volume, but the case is passively slowly venting air through relatively small number of holes compared to the case total surface area, the rest is contained inside the case structure). Having fans pushing in air and sucking out air creates the assembly line (or aka chimney) effect, carrying out the hot air.

Edit: I personally think those cases that have fronts and then immediately alongside them have exhaust fans are completely useless like the following on the left with purple fans:

product-image.aspx


The only time it makes sense is if you have a front/side radiator, which you then don't want to circulate in hot air that was just extracted from the cpu:

Untitled.png.bb68ac1b0b9a9481db714a9c9faa77cc.png
 
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Dan C said:
You are confusing OEM with retail. Stop day drinking
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Hauw, obvias you have no clue what you are talking about but hey this Mybb everyone talks whatever shite makes them feel better so good for you my man.
 
Lupus said:
Nope intake fans bring the cool air into the case, but then where does that hot air go? As it's now warmed up, you're correct pc cases are small and you're now filing it up with warm air that can't be vented out. So if you only have one fan, it would be better as an exhaust.
Warm air also rises so it's better to have the exhausts higher up, you also have the heat from the power supply blowing into the case, plus the GPU and the CPU fans.
So if you can have inlets and exhausts.
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So the case is full of warm air, while more cold air comes in but the hot air goes nowhere? Is this PC Case air tight or something? No man this makes no sense. You can't have positive pressure but also the air not escaping in something with 100 holes in it. So I maintain inlets only, the massive amount of air they introduce forces every other hole to become an outlet. Add outlets if you want to help direct the air. Otherwise all manner of single fan devices wouldn't work. Heck, just look at a PSU, it has one single inlet fan and works just fine

Also hot air within a PC has almost no force behind it (it's not hot enough) so while yes it will rise, any fan can force it down again by orders of magnitude.
 
airborne said:
Hauw, obvias you have no clue what you are talking about but hey this Mybb everyone talks whatever shite makes them feel better so good for you my man.
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The OEM versions of Windows have been available to the general public for many, many years and have worked without problems. The main difference between OEM and Retail is that the OEM license does not allow moving the OS to a different computer, once it is installed.
 
Archer said:
So the case is full of warm air, while more cold air comes in but the hot air goes nowhere? Is this PC Case air tight or something? No man this makes no sense. You can't have positive pressure but also the air not escaping in something with 100 holes in it. So I maintain inlets only, the massive amount of air they introduce forces every other hole to become an outlet. Add outlets if you want to help direct the air. Otherwise all manner of single fan devices wouldn't work. Heck, just look at a PSU, it has one single inlet fan and works just fine

Also hot air within a PC has almost no force behind it (it's not hot enough) so while yes it will rise, any fan can force it down again by orders of magnitude.
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The purpose behind having intake and exhaust fans is simply to facilitate the airflow through the case. Hot air needs to be extracted. Having positive pressure from intake fans is fine, but having an exhaust fan to expel the hot air is better. Constant airflow. This delays heatsoak and keeps the general temp in the case lower, thus allowing more headroom which leads to longer boosts, less chance of throttling etc.
 
UrBaN963 said:
The purpose behind having intake and exhaust fans is simply to facilitate the airflow through the case. Hot air needs to be extracted. Having positive pressure from intake fans is fine, but having an exhaust fan to expel the hot air is better. Constant airflow. This delays heatsoak and keeps the general temp in the case lower, thus allowing more headroom which leads to longer boosts, less chance of throttling etc.
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What heat soak? The entire volume of air in the case is being replaced every second in any semi decent case.
But yes if you want to have more control over where the air goes add an exhaust. I say it's far simpler to designate one face as intake and done. Then you have pretty much gauranteed airflow through the entire case instead of having to try figure the internal aerodynamics
 
Archer said:
What heat soak? The entire volume of air in the case is being replaced every second in any semi decent case.
But yes if you want to have more control over where the air goes add an exhaust. I say it's far simpler to designate one face as intake and done. Then you have pretty much gauranteed airflow through the entire case instead of having to try figure the internal aerodynamics
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Heat soak of the CPU and GPU coolers.

Tell you what, why don't you go do the experiments and see for yourself. If it was as simple as a single intake, that's how cases would be designed.

So, go test it, then come back and we can review your findings.
 
UrBaN963 said:
Heat soak of the CPU and GPU coolers.

Tell you what, why don't you go do the experiments and see for yourself. If it was as simple as a single intake, that's how cases would be designed.

So, go test it, then come back and we can review your findings.
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I didn't say a single intake. I said a single fan could replace all the air in a case within a matter of seconds.

As for design, look at the vast majority of cases, way more forced intake vs forced exhaust. And some have no forced exhaust, but none have zero forced intake.

Anyway, I've been doing my own digging and have a revised opinion based on various tests I've seen (for a typical case layout)
If you want the absolute best temperatures go mostly exhaust (1-2°C drop in temps)
If you want reduced cleaning, go mostly intake (assuming intakes are filtered).
Real world difference to us plebs is negligible
 
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