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How to decide on a case for air cooling (warning - pics) - Page 192

post #1911 of 2110
Quote:
Originally Posted by $ilent View Post

I thought the top fans on a case are supposed to be exhaust?

So from what the OP states on the first post, every single fan in your pc should be intake apart from the fans at the back of the case which should exhaust all hot air?

Depends on where the fan is I think, as well as the total fans (and their location) in the case. (see also http://www.bit-tech.net/hardware/2012/02/10/the-big-cooling-investigation/10 using Fractal Design Define R3 which has the front fan basically on top of the heatsink position rather than in front of it ... 43°C over ambient isn't that great for 1.3V however)

If the fan is centered over the heatsink (and it is mounted front to back) it probably will introduce more turbulence into the CPU cooler exhaust stream. If it is in front of the intake fan for the CPU cooler then it could be beneficial provided the flow isn't so strong that air doesn't get into the heatsink intake. The issue is if you intake air that is exhausted from the heatsink (i.e. the hot air from CPU heatsink exhaust recirculates into the top intake).

Ehume's OP states that he uses a front fan in the 5.25" bays, so it's not just top intake : there's flow pushing air into the heatsink intake.

If I'm not mistaken silverstone's FT01 has top intake.
http://www.silverstonetek.com/product.php?pid=200&area=
and their video http://www.youtube.com/watch?feature=player_embedded&v=Qe-2ZqmSGug

The Silverstone Kublai KL04 also has a top intake.
Edited by AlphaC - 7/22/13 at 8:22pm
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post #1912 of 2110
Thread Starter 

I built my new 4770k rig in a CM N600. The front top fan is an intake.

 

Nice case, BTW. I'll link to the review as soon as it is published. This is the first review case I'm using every day.

alpha updated
(19 items)
 
secundus
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CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
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Wireless Mouse WACOM Intuos 3 generic 
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alpha updated
(19 items)
 
secundus
(14 items)
 
 
CPUMotherboardGraphicsRAM
i7 4790k Gigabyte GA-Z97X Gaming-7 Intel HD4600 Crucial Ballistix Sport Very Low Profile 8GB Ki... 
Hard DriveCoolingOSMonitor
Samsung 840 EVO 500GB Prolimatech Megahalems Rev. C Windows 8.1 Home Premium 64-bit Acer K242HL 
KeyboardPowerCaseMouse
Dell SK-8110 (PS/2) Seasonic X460 Fanless motherboard tray from CM ATCS 840 Logitech MX 1100 
Mouse PadAudio
Dell Creative SoundBlaster X-Fi MB3 
CPUMotherboardGraphicsRAM
i7 860 Gigabyte GA P55M UD2 ZOTAC/NVidia GTX 650 Ti 2GB 4x4GB G.Skill Ripjaws DDR3-1333 CAS9 
Hard DriveOptical DriveCoolingOS
Samsung 1TB Spinpoint F3 7200.12 Plextor 24x DVD burner Cooler Master Hyper Z600R Win7 64-bit 
MonitorKeyboardPowerCase
Dell E207WFP 20-inch flat panel Logitech Wireless 510 Seasonic X-650 fully modular 80+ Gold Lian Li PC-7FN 
MouseMouse PadAudio
Wireless Mouse WACOM Intuos 3 generic 
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post #1913 of 2110
Hey everyone, I need some help with airflow!

I'm using a fractal define design R4, and for those who don't know, there are two slots for the top, two for the front, and one for the rear. right now, I'm using the lower slot in the front for intake, and a rear fan for exhaust.

My power supply is a HX750, and it pushes air up. I'm using an akasa medusa for my HSF, it has a 120mm fan and a 140mm fan. According to this thread, to improve my airflow, I should populate both front slots for intake, and also add one powerful fan for intake on the top of the case in the front slot, and leave the back slot empty (i think?). However, my HSF could possibly block off some of the airflow that runs in from the top intake, as it is a relatively large heatsink. Should i still carry the plan out, or use the top slot for exhaust instead?

Sorry if i'm not being graphical enough - it's hard to describe a case!
post #1914 of 2110
HX750 pulls air in through the 140mm vent and exhausts out the back.

Have you removed the top section of your HDD cage? or if you can both sections and put HDD in optical cage.

I have found the stock R4 fans are not very good at pulling air through the grill and filter.

Move the front one to the bottom.

Get a couple of 140mm cooler fans and put them in the front and you should be nice and cool.

I've done a couple R4's now and my own R2 has 140mm TY-140 fans with square modification in front.
post #1915 of 2110
Quote:
Originally Posted by doyll View Post

HX750 pulls air in through the 140mm vent and exhausts out the back.

Have you removed the top section of your HDD cage? or if you can both sections and put HDD in optical cage.

I have found the stock R4 fans are not very good at pulling air through the grill and filter.

Move the front one to the bottom.

Get a couple of 140mm cooler fans and put them in the front and you should be nice and cool.

I've done a couple R4's now and my own R2 has 140mm TY-140 fans with square modification in front.


i don't have a HDD. I have an SSD, and it's mounted behind the motherboard. I cannot remove the bottom section of my HDD cage (it doesn't let me), but I removed the top section and rotated the bottom section. i actually have no idea whether rotating the bottom section of the HDD cage does anything.

you mean the stock R4 fans are bad at pulling air as intake, or exhaust? or both? i can replace everything (i want to perform every improvement i might need once and for all, and stop spending more money on miniscule upgrades).

the front fan is already on the bottom slot. would adding another fan in front and putting it on the top slot help? two fans as intake is better than one, right?

what do you mean, get a couple of 140mm fans and put them "in the front"? do you mean the front as in right behind the door, or the front slot on the top of the case?

unanswered question: should i place a fan or two as intake on the top of the case? would it help?

thanks for your response!
post #1916 of 2110
Quote:
Originally Posted by findingthelimit View Post

i don't have a HDD. I have an SSD, and it's mounted behind the motherboard. I cannot remove the bottom section of my HDD cage (it doesn't let me), but I removed the top section and rotated the bottom section. i actually have no idea whether rotating the bottom section of the HDD cage does anything.

you mean the stock R4 fans are bad at pulling air as intake, or exhaust? or both? i can replace everything (i want to perform every improvement i might need once and for all, and stop spending more money on miniscule upgrades).
Turning the bottom HDD cage lowers the resistance to airflow and that's good.

As I said above:
I have found the stock R4 fans are not very good at pulling air through the grill and filter.
Quote:
Originally Posted by findingthelimit View Post

the front fan is already on the bottom slot. would adding another fan in front and putting it on the top slot help? two fans as intake is better than one, right?
Yes
Quote:
Originally Posted by findingthelimit View Post

what do you mean, get a couple of 140mm fans and put them "in the front"? do you mean the front as in right behind the door, or the front slot on the top of the case?
No, I mean replace the stock front fan and install a 2nd fan.
Quote:
Originally Posted by findingthelimit View Post

unanswered question: should i place a fan or two as intake on the top of the case? would it help?
No.
It might help to remove the cover on the top vent at the back.
Quote:
Originally Posted by findingthelimit View Post

thanks for your response!

Edited by doyll - 7/31/13 at 1:41pm
post #1917 of 2110
Quote:
Originally Posted by doyll View Post

Turning the bottom HDD cage lowers the resistance to airflow and that's good.

As I said above:
I have found the stock R4 fans are not very good at pulling air through the grill and filter.
Yes
No, I mean replace the stock front fan and install a 2nd fan.
No.
It might help to remove the cover on the top vent at the back.

i'm new to building computers in general - what dose pulling air through the grill and filter mean? are you referring to the dustfilter in front?

what is "the cover on the top vent at the back"? do you mean remove the anti-noise foam in the slot closer to the back, but not placing a fan in?
post #1918 of 2110
Quote:
Originally Posted by findingthelimit View Post

i'm new to building computers in general - what dose pulling air through the grill and filter mean? are you referring to the dustfilter in front?
yes, the dust filter and grill in front.. and the slotted sides in front too.
Quote:
Originally Posted by findingthelimit View Post

what is "the cover on the top vent at the back"? do you mean remove the anti-noise foam in the slot closer to the back, but not placing a fan in?
Yes, the "anti-noise" material on vent cover closer to the back. and do not put a fan in it.
post #1919 of 2110
will the nzxt phantom 410 work if i use every fan as an intake with filters and only leave the rear as an exhaust? I am interested in doing it because i heard it reduces dust build-up greatly when all the dust are being push out of the case through small holes. Temperature drop is a bonus to me but dust is my primary concern.
post #1920 of 2110
Quote:
Originally Posted by xbotak View Post

will the nzxt phantom 410 work if i use every fan as an intake with filters and only leave the rear as an exhaust? I am interested in doing it because i heard it reduces dust build-up greatly when all the dust are being push out of the case through small holes. Temperature drop is a bonus to me but dust is my primary concern.
I think the Phantom 410 will be hard to keep dust out of as it has no filters. The bottom vent is worthless as base frame is solid on front and sides so the only airflow to bottom is from the back.. just below the PSU heated exhaust.. and supplies PSU intake. You would need to raise the case on 30-40mm feet, install filters on bottom and front intakes, install a side intake with filter and probably unplug / take out top fans.. maybe use the front one as intake with filter on low speed to feed cool air to CPU cooler.
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