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How many fans do you have on your PC case?

Jun 1, 2011
1,366 (0.45/day)
US of A
System Name gaming
Processor Intel i7-9700k @ 4.9ghz
Motherboard Gigabyte Z370 AORUS Gaming 3
Cooling Noctua U12A
Memory 16GB Corsair Vengeance LPX 3000mhz
Video Card(s) Gigabyte GTX 1660 Ti OC 6G
Storage Crucial MX500, Samsung 850 Evo , Crucial P1 NVMe
Display(s) Dell - SE2717HR 27" IPS LED FHD FreeSync Monitor
Case Phanteks P400S w/ Noctua fans
Audio Device(s) Klipsch pro-media 2.1 speakers
Power Supply Seasonioc Focus Plus 650w
Mouse Logitech G502
Keyboard Logitech G15 original
Software Win 10
Benchmark Scores i can finally play crysis
My profound morning shower thought today was "what's better two 140mm or three 120mm front intake fans". I figured I would make a poll to ask people what they thought but then there are so many options; number of fans, fan speeds, fan sizes, fan placement, etc., etc., and what about about out take fans? So I figured people could just post what they have if they like to.

I currently have two enermax TB twister 140mm fans up front as intake,
one noctua 140mm fan on the roof mount and one noctua 120mm on the rear for out take
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Jul 10, 2015
160 (0.10/day)
System Name Alienation from family
Processor i7 7700k
Motherboard Hero VIII
Cooling Macho revB
Memory 16gb Hyperx
Video Card(s) Asus 1080ti Strix OC
Storage 960evo 500gb
Display(s) AOC 4k
Case Define R2 XL
Power Supply Be f*ing Quiet 600W M Gold
Mouse NoName
Keyboard NoNameless HP
Software You have nothing on me
Benchmark Scores Personal record 100m sprint: 60m
Phanteks Luxe 2, 1x140mm bottom, 1x140mm rear, 1x140mm roof, 2x120mm right side panel. In front still without fans, maybe I will add 1x140mm. All Arctic F series Silent FDB.
Nov 13, 2007
7,528 (1.73/day)
Austin Texas
System Name _
Processor 8700K @ 5.1 Ghz
Motherboard MSI Z370-A PRO
Cooling 120mm Custom Liquid
Memory 32 GB 3600 Mhz DDR4 16-16-16-36-380 trfc - 2T
Video Card(s) Gigabyte GTX 2080 Ti Windforce (Undervolted OC 1905MHz)
Storage 3x1TB SSDs
Display(s) Alienware 34" 3440x1440 120hz, G-Sync
Case Jonsbo U4
Audio Device(s) Bose Solo
Power Supply Corsair SF750
Mouse silent click gaming mouse
Keyboard tenkeyless
Software Windows 10 64 Bit
3 x 120mm intake (@800rpm) and 1 x 120mm exhaust.

one of the 120MM intakes is just a double wide rad in push pull, ramps with cpu heat, and the 120mm exhaust that ramps up with PCH chip temp (so it ramps up exhaust during gaming when the gfx heats up).
Feb 3, 2017
1,766 (1.79/day)
Processor i5-8400
Cooling Alpenföhn Black Ridge
Memory 2*16GB DDR4-3200 CL16
Video Card(s) Gainward GeForce RTX 2080 Phoenix
Storage 1TB Samsung 970 Pro, 2TB Intel 660p
Display(s) ASUS PG279Q, Eizo EV2736W
Case Dan Cases A4-SFX
Power Supply Corsair SF600
Mouse Logitech G700
Keyboard Corsair K60
No space for case fans here :D


PC Gaming Enthusiast
Jul 25, 2008
12,411 (3.03/day)
Louisiana -Laissez les bons temps rouler!
System Name Bayou Devil
Processor Core i7-4790k 4.4Ghz @ 1.18v
Motherboard ASUS Z97 Deluxe
Cooling All air: 2x140mm Fractal exhaust; 3x 140mm Cougar Intake; Enermax T40F CPU cooler
Memory 2x 8GB Mushkin Redline DDR-3 1866
Video Card(s) MSI GTX 1080Ti Gaming X
Storage 1x 500 MX500 SSD; 1x 2TB WD Black; 2x 4TB WD Black;1x 2TB WD Green (eSATA)
Display(s) HP 27q 27" IPS @ 2560 x 1440
Case Fractal Design Define R4 Black w/Titanium front -windowed
Audio Device(s) Soundblaster Z
Power Supply Seasonic X-850
Mouse Coolermaster Sentinel III
Keyboard Logitech G610 Orion mechanical (Cherry Brown switches)
Software Windows 10 Pro 64-bit (Start10 & Fences 3.0 installed)
My Main Sydtem:
2x 140mm Cougar Vortex HDB front intake
1x 140mm Cougar CFD white LED bottom intake
1x 140mm Fractal R2 top exhaust
1x 140mm Fractal Venturi HF-14 rear exhaust

The above has been carefully calculated by cfm to be very close to balanced, with slightly more air going in than out. My temps are always fantastic.
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Jun 27, 2011
5,855 (1.93/day)
Processor Ryzen 3900x
Motherboard Asrock X570m PRO4
Cooling Scythe Mugen 5 Rev B with push pull fans
Memory Corsair 4x8gb 3533mhz Cas 16
Video Card(s) EVGA 1060 3gb
Storage Adata SX8200 1tb
Display(s) Asus 144hz
Case Fractal Design Something
Power Supply XFX 850w
Software Windows 10 64 Bit
At the moment 2 intake, 2 on cooler, and 1 exhaust. I have ran as few as 0 and as many as 10. I have a box of used parts with about 30 old fans in it.
Nov 30, 2015
693 (0.49/day)
Processor Core i5-2400 @3,1 GHz
Motherboard Gigabyte GA-B75M-D3H
Cooling LC Power LC-CC-95
Memory HyperX Genesis 2x4GB @1333 MHz
Video Card(s) Palit GTX 750 Ti StormX OC 2GB
Storage WD Blue 1TB/ Crucial BX500 120GB/ Seagate 500GB
Display(s) ASUS VW190DE
Case Deepcool Smarter /w 2x Zalman 1000RPM
Audio Device(s) Onboard
Power Supply FSP Hexa+ 400W
Mouse Microsoft WMO 1.1A
Keyboard IBM KB-8926
Software W7 Pro 64-bit
Benchmark Scores Turns on on the first try! Usually.
My own case has 2 Zalman fans at 1000rpm, brothers' case has 5 Scythe Glidestream 1200rpm running at about 800rpm, 2 intakes and 3 exhausts. That case (Zalman Z3 Plus) has hands down the best cooling of all the cases I've worked so far.
Jul 14, 2006
2,047 (0.42/day)
System Name It's just a computer
Processor i9-9900K
Motherboard eVGA Z390 Dark
Cooling D5, PA140.3, HK Rev. 3.0
Memory G.Skill F4-4500C19D-16GTZKKE
Video Card(s) eVGA RTX2080 FTW3 Ultra
Storage Samsung 960 EVO M.2
Display(s) LG 32GK650F
Case Thermaltake Xaser VI
Audio Device(s) Onboard /Z-5500
Power Supply Corsair AX1200
Mouse Logitech
Keyboard Logitech
Software Win7 Ultimate x64 SP1
Two 140 bottom mounted intake, one 140 top mounted exhaust, one 120 rear mounted exhaust, one 140 internal circulator.
Apr 15, 2009
738 (0.19/day)
Processor Ryzen 9 3900X
Motherboard Gigabyte X570 Aorus Master
Cooling Noctua NH-D15S
Memory 32 GB Ballistix Elite DDR4-3600 CL16
Video Card(s) Sapphire Nitro+ RX 590 OC Special Edition
Storage Sabrent Rocket NVMe 4.0 1TB
Display(s) ASUS MG278Q
Case Corsair Carbide 600Q
Power Supply Seasonic Prime 750W Titanium
Software Windows 10 Pro 64
2 x 140 intake
1 140 exhaust
The CPU fan gives pretty good exhaust flow as well.
Mar 23, 2012
763 (0.28/day)
System Name Games/internet/usage - Server - backup - HTPC2
Processor I7 5820k - AMD A8-5600K BE - I7 920 - A8-7600
Motherboard ASUS X99-A2 - Gigabyte GA-F2A85X-UP4 - MSI x58 pro-e - Gigabyte GA-F2A88XN-WIFI
Cooling custom water loop for cpu and gpus - CM - Arctic Cooling Freezer Xtreme r.2 - Noctua NH-U12P SE1366
Memory 16GiB Crucial Ballistix Sport 2666 MHz - 8GiB 1600MHz - 12 GiB corsair thing - 8GB 1866MHz - 8 GB
Video Card(s) 2x Radeon R9 290X CF 1100/1350 - HD 7560D - 2x Radeon HD6950 CF - A8 -7600
Storage Samsung XP941 500 GB - 60 GB SSD + 6 x HDD 4 TB in RAID 6 - 4 SSD and 2 HDD - 250 GB SSD
Display(s) Dell 3008WFP - Remote desktop - the Dell when in use - 55" TV screen
Case Caselabs Magnum M8 - Fractal Design Define R4 - Nanoxia DS 1 - Antec ISK 110 VESA
Audio Device(s) Toslink -> Shiit Modi 2 Uber -> Matrix m-stage -> HD650 - none - as main - HDMI out -> 5.1 system
Power Supply beQuiet dark power pro 1200W- corsair RM750x - Corsair AX850 - Antec 90 W pico power
Mouse Logitech G402 - remote desktop - Logitech G402 in use - Logitech K830
Keyboard Corsair K95 RGB - remote desktop - Corsair K95 RGB when in use - Logitech K830
Software Win 10 Pro - Win server 2012 essentials - Win 7 Pro - Win 10 Pro
Benchmark Scores Not high enough
Depends on the case really,
1st HTPC: none
2nd HTPC: one 120 mm for the tower cooler, that does protrude substantially from the case itself.
the last daily used one has:
1 front intake
3 bottom intake
1 back exhaust
1 back exhaust in PSU
All fans (except PSU) are arctic cooling F12 PWM
It also has an external radiator with 18 fans (9 fans in push and 9 in pull)
All fans running approximately at 500 rpm at desktop and ramp up to round 1000 rpm when needed, since the driving voltage has been lowered in a fan controller.
Most noisy component is the D5 pwm pumps (witch were an improvement from the MCP 35x)
Jun 8, 2011
5,071 (1.66/day)
Somerset, UK
System Name Not so complete or overkill
Processor 5960X @ 4.20Ghz @ 1.06v - For Crunching!!
Motherboard MSI X99 Titanium Gaming
Cooling Custom loop with old bits and pieces that I need to replace
Memory G Skill TridentX 3466 non RGB..
Video Card(s) 2 x EVGA GTX 1080 Ti SC Black Edition
Storage Sandisk 120Gb SSD, 2 x 2Tb Sammy 3.5" drives - Need more drives!!
Display(s) 3 x 23" LG IPS panels (can't remember model!!)
Case 10mm thick MDF on plastic risers.. It's kinda a case??
Audio Device(s) Onboard
Power Supply EVGA T2 1200w
Mouse Corsair thingy
Keyboard Corsair thingy
Software Windows 10
Benchmark Scores It's not to bad.. More importantly, it works!!
I suppose for this I'd need a case.........
Oct 21, 2005
5,531 (1.08/day)
System Name Small ATX Desktop
Processor Intel i5 8600K @ 4.6 GHz Core & 4.3 GHz Cache @ 1.168V
Motherboard Asrock Z370 Taichi
Cooling Phanteks PH-TC14PE, MonoPlus, Fans: 2xThermalright TY143 / 2xCorsair SP-120L / 2xYate Loon D14BH-12
Memory G-Skill TridentZ 2X8GB DDR4 3200 CL14 F4-3200C14D-16GTZ @ 3200 14-14-14-34 2T @ 1.35V
Video Card(s) Zotac 1060 6GB Mini ZT-P10600A-10L with Arctic MonoPlus and Yate Loon D14BH-12 Fan
Storage OS Samsung 970 Pro 512GB NVMe, Games Phison E12 NVMe 1TB, Data WD10EZEX HDD 1TB
Display(s) 2x Asus PB258Q 2560x1440 25" IPS
Case Lian Li PC A05NB (Inverted Mobo)
Audio Device(s) Audiotechnica ATH M50X, Antlion Mod Mic 4, SYBA SD-CM-UAUD, Acoustic Research 2Ch Speakers
Power Supply Seasonic SS-660XP2 660 Watt Platinum
Mouse Zowie EC2A Mouse, Razer Naga Chroma '14, Corsair MM600, Inateck 900x300 XL pad, Tiger Gaming Skates.
Keyboard Filco Majestouch II Ninja TKL, Goldtouch GTC 0033 Ten Key, PS3 Controller
Software Win7 Pro 64 (Installed on Coffee Lake using AsRock's handy PS/2 Simulator in Bios)
My PC A05 case has 3 fans. Keep in mind the internals of my PC A05 case are upside down.
1) Top intake Yate Loon D14BH-12 140mm
2) Front intake Corsair SP120L 120mm (mainly just vents the hot bezel air from the power supply's exhaust)
3) Rear exhaust Corsair SP120L 120mm

Corsair fans are the high performance PWM grey ones from an H100i.
Jul 25, 2006
5,830 (1.21/day)
Nebraska, USA
System Name Brightworks Systems BWS-6 E-IV
Processor Intel Core i5-6600 @ 3.9GHz
Motherboard Gigabyte GA-Z170-HD3 Rev 1.0
Cooling Quality case, 2 x Fractal Design 140mm fans, stock CPU HSF
Memory 16GB (2 x 8GB) DDR4 3000 Corsair Vengeance
Video Card(s) EVGA GEForce GTX 1050Ti 4Gb GDDR5
Storage Samsung 850 Pro 256GB SSD, Samsung 860 Evo 500GB SSD
Display(s) Samsung S24E650BW LED x 2
Case Fractal Design Define R4
Power Supply EVGA Supernova 550W G2 Gold
Mouse Microsoft Wireless 5000
Keyboard Microsoft Wireless Comfort 5050
Software W10 Pro 64-bit
"what's better two 140mm or three 120mm front intake fans"
Two 140mm fans - obviously! Why? Again, that's obvious. Two fans are quieter than 3.

Now don't go interjecting a bunch of "what ifs" in some futile attempt to discredit that claim. If you want to do that, use specific model numbers for the 140mm and the 120mm fans. And be specific about your definition of what "better" means in your scenario.
Nov 28, 2012
1,608 (0.64/day)
System Name N/A
Processor I3 3.5GHZ (3150)
Motherboard ASRock B85M-ITX
Cooling stock
Memory 8GB
Video Card(s) XFX GTX750Ti 2GB
Storage 1TB WD and 1TB Seagate
Display(s) LG 21.5" LCD IPS
Case CoolerMaster
Audio Device(s) Onboard
Power Supply Rosewill 610WATT
Mouse R.A.T3
Keyboard Razer BlackWidow
Software Windows 10 Pro 64-Bit
The normal for my Video Server (1 120mm Front) and for my Main Rig (120mm rear/front) though I would mod for my video Server but not at this time
Apr 3, 2019
133 (0.68/day)
System Name Felix
Processor AMD 3800x
Motherboard Asus Prime X570 Pro
Cooling Enermax ETS-T50
Memory 32gb Teamgroup Nighthawk 3200mhz 14 cas
Video Card(s) 1080 Strix
Storage Adata 8200pro 1tb, WD Black SN750 500GB, Samsung 860 pro 500gb
Display(s) Alienware 34" AW3418DW
Case Enermax Sabray White
Audio Device(s) THX AAA 789 Headphone Amp, RME ADI-2 Dac, Adam Audio T5V Speakers, Creative Pebble Speakers
Power Supply Seasonic Snow Silent 650 watt
Mouse LLDOS Flamma
Keyboard Corsair K95
6x120mm intake, 1x140mm exhaust, 2x120mm exhaust
Mar 23, 2016
2,827 (2.17/day)
Processor Ryzen 5 3600
Motherboard MSI B450 Tomahawk ATX
Cooling Scythe Kotetsu with AM4 bracket
Memory PNY Anarchy-X XLR8 Red DDR4 3200 MHz C15-17-17-17-35
Video Card(s) MSI GeForce RTX 2060 GAMING Z 6G
Storage Samsung 970 EVO NVMe M.2 500 GB, SanDisk Ultra II 480 GB
Display(s) Samsung SyncMaster C27H711 OC refresh rate 110Hz
Case Phantek Eclipse P400S (PH-EC416PS)
Audio Device(s) On-board dead - Creative Labs Sound Blaster Audigy Rx
Power Supply EVGA 850 BQ
Mouse SteelSeries Rival 310
Keyboard Logitech G G413 Silver
Software Windows 10 Professional 64-bit v1903
3x Cougar Vortex HDB 120mm as front intake
2x Cougar Vortex HDB 120mm as exhaust
Mar 13, 2014
4,136 (2.02/day)
Processor i7 7700k
Motherboard MSI Z270 SLI Plus
Cooling CM Hyper 212 EVO
Memory 2 x 8 GB Corsair Vengeance
Video Card(s) MSI GTX 980 Ti GAMING
Storage Samsung 850 EVO 250 GB and WD Black 4TB
Display(s) ASUS 27 inch 1440p PLS PB278Q
Case Corsair Obsidian 750D Airflow Edition
Audio Device(s) Onboard
Power Supply EVGA SuperNova 850 W Gold
Mouse Logitech G502
Keyboard Logitech G105
Software Windows 10
I've got the 3 fans that came with my Corsair Obsidian 750D Airflow Edition case. 2 front intake, 1 rear exhaust. They seem to be doing a good job pushing heat out of my rig so I haven't bothered to add any more although there are several more places that I could if I ever need to. This PC case is certainly not the best out there but it's the nicest case that I have ever owned.
May 18, 2009
1,101 (0.29/day)
System Name Personal / HTPC
Processor i5-4670k @ 4.4 / i5-4460
Motherboard ASUS z97-AR /ASRock Z87 Extreme4
Cooling Corsair H100i / stock HSF
Memory 16GB DDR3 1600 / 8GB DDR3 1600
Video Card(s) Zotac GTX 980Ti AMP! Omega / Zotac GTX 980Ti AMP! Omega
Storage 250 GB Crucial SSD MX200, 1TB & 500GB Western Digital / 2x 4TB WD Red
Display(s) 3x 24" Asus Ve248H LED (5760x1080) / 50" LCD TV
Case CoolerMaster XB Evo / CM HAF XB Evo
Power Supply 850W SeaSonic X Series / 750W SeaSonic X Series
Mouse Logitech G502
Keyboard Microsoft Natural Elite Keyboard
Software Windows 7 Home 64 / Windows 10 Home 64
1 - 200mm top exhaust

There are two 120mm push fans on the H100i cooler, but I just have the 1 exhaust fan.
Sep 10, 2018
300 (0.75/day)
System Name His & Hers
Processor i9 9900k @5ghz/ R9 3900X Stock
Motherboard Asus Maximus XI Code/ X570 Aorus Master
Cooling Corsair h150i Pro Push/Pull. 5x Corsair ML120 + 4x Corsair LL120/ Corsair h115i Platinum
Memory 32 GB 4x8GB 3600mhz Corsair RGB Pro/ 16 GB 3200 CL14 @3600 CL16
Video Card(s) Asus ROG Strix 2080 ti/ Titan XP
Storage lots of SSD.
Display(s) Asus ROG PG278QR / MSI 27 inch VA panel.
Case Corsair 500D SE RGB/ Phanteks Evolv X
Audio Device(s) Arctis Pro + gaming Dac/ Corsair sp 2500/ Logitech Z 625
Power Supply Seasonic Ultra Prime Titanium 850w x2
Mouse Logitech G903 Lightspeed/ Logitech G Pro Hero.
Keyboard Corsair K95 RGB Platinum/ Logitech G Pro
6 120mm front intake in push/pull with 3 120mm exhaust (1 rear/2 top in my main Pc.

3x 140mm front intake with 3x 140mm exhaust (1 rear/2 top) in my secondary pc.

All configured to run at 800-1200 RPM depending on what my GPU is doing.

My Rowenta Turbo Silence table top fan make more noise than my pc.
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Dec 16, 2017
496 (0.74/day)
System Name Desktop5
Processor AMD Ryzen 5 3600
Motherboard Asus Prime X570-P
Cooling AMD Wraith Stealth
Memory 2x8GB Ballistix Sport LT 3200 MHz (CL16-18-18-36)
Video Card(s) Gigabyte AORUS Radeon RX 580 8 GB
Storage Kingston HyperX Fury 240 GB // Toshiba 2 TB HDD // WD 2 TB HDD // Mushkin Triactor 3DL 256 GB
Display(s) LG 22MP55 IPS Display
Case Corsair Carbide 100R
Audio Device(s) Logitech G430 Headset
Power Supply Corsair CX650M
Mouse Logitech Wireless Mouse M280 // Microsoft Trackball Optical 1.0
Keyboard HP Vectra VE keyboard (Part # D4950-63004)
Software Windows 10
1 intake, 3 exhaust (1 rear, 2 top), 120 mm all of them. I've been considering installing a second intake fan, but the only place remaining is pretty much covered with hard drives. Seems kinda pointless. And since my current rig is still being fine tuned, I haven't settled yet on any specific setting for the fans, although they can spin up to 1600 RPM if needed...

And I also need to fix that cable mess I have inside the case, so... Lots of work left to do :laugh:
Jan 29, 2012
5,424 (1.93/day)
System Name natr0n-PC
Processor 2600K @ 4.4GHz / Dual Xeon 5675's @ 3.33GHz 12c/24t
Motherboard Sabertooth Z77 / GA-7TESM
Cooling Deepcool Assassin - 3 Fans / Custom
Memory 2x8GB 2133MHz Samsung Dual Channel / 6x4GB 1333MHz Samsung Hexa Channel
Video Card(s) Evga GTX 980 SC / Asus Strix 980ti
Storage Various SSD/HD
Display(s) Samsung 23' 2048x1152 / Various Dells
Case Sunbeam Transformer Silver / Matrexx 55
Audio Device(s) SB X-fi on all systems
Power Supply Corsair TX 650w / Evga NEX 750B
Mouse Alienware AW558 @ 5000 DPI
Keyboard Asus KB34211
Software XP64/7/8.1/10
Benchmark Scores http://valid.x86.fr/79kuh6
In my server case got 8 -140mm and 1- 120mm
also a 70mm just looked lol for chipset
Apr 9, 2018
68 (0.12/day)
I always try to minimise the amount of case fans running because less airflow means less noise and less dust.

At idle, only 1 x 140mm top-mounted exhaust fan is running at 350rpm.
Under load, the exhaust fan ramps up to 800rpm and then a 120mm intake fan kicks in around 500rpm.
There's a second 120mm intake fan but it never turns on because temperatures are pretty good.
Sep 16, 2018
215 (0.55/day)
Processor 3770K @ 4700MHz 1.375v
Motherboard Asus P8Z77-V
Cooling Le Grand Macho RT, TY143
Memory 2x2GB G.Skill TridentX, 2x2GB G.Skill Perfect Storm @ 1000 8-9-8-24 1T 1.65v
Video Card(s) EVGA GTX 980 Classified @ 1495/2001
Storage Crucial M4 256, WD 1TB Black, and some misc spinners.
Display(s) Hisense 55"
Case Fractal Design Meshify C TG, White
Audio Device(s) NAD T748, Mission M something, Monitor Audio FB-210, Monster HDP 1800
Power Supply CM Silent Pro M2 850
Mouse Zowie EC2 Evo
Keyboard Logitech G15
Software Yes
Benchmark Scores Ask your mom.
In my Meshify C I have 5x 120x38's and a single 120x25 for the hdd bay. Three intakes at the front, 1 intake top front, 1 exhaust top rear, 1 exhaust rear. Better than open air lol. Not too loud, you can hear it. But with the kids, stereo, etc it really doesn't bother me. And now the kids are in bed, its quiet, and its really not bad. I run them at 7v, but at 12v its a different story. Hairdryers.


I myself normally wouldn't run an intake next to an exhaust, but my fronts will push right out of the top at 12v with no fan up there, so I've got it there to push the incoming air straight through the cooler. The two exhaust are literally acting as push/pull against my cooler since there is a about a mm or two of clearance on both sides lol. At normal quiet speeds, its not what you would expect, it still throws air, but quietly :D

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Mar 28, 2018
425 (0.75/day)
System Name Space Heater MKIII
Processor AMD Ryzen 5 2600X
Motherboard MSI X470 Gaming Pro
Cooling Cryorig R1 Ultimate, 4x Cryorig XF140 fans
Memory 2x8GB Crucial Ballistix Sport DDR4-3000
Video Card(s) Gigabyte GTX 1070 G1 Gaming
Storage 500GB Samsung 970 EVO, 2+4TB Seagate Barracudas
Display(s) AOC AG241QX, 2x Dell 1908FP
Case Phanteks Enthoo Pro M
Audio Device(s) Denon AVR-1909 , Panasonic SB-PM19 speakers
Power Supply EVGA 750 B3, CyberPower CST135XLU
Mouse Logitech MX Master
Keyboard Logitech G610 Orion Brown
Software Windows 10 Pro
Benchmark Scores Geekbench 4 on i7: 14581 multi, 4225 single @4.5GHz (https://browser.geekbench.com/v4/cpu/8441992)
I have four Cryorig XF140 fans in my Phanteks Enthoo Pro M. Two are in the front as intakes, one is on my R1 Ultimate, and one is in back as the exhaust.
May 30, 2018
728 (1.45/day)
Cusp Of Mania, FL
System Name humble reentry to pc-building after too many years
Processor Ryzen 5 2600 [4.0GHz @ 1.1v]
Motherboard Asus ROG Strix X370-F
Cooling Dark Rock 4 [CPU] 2x 140mm Corsair ML140's [front intake]
Memory 2x8GB TridentZ RGB [3200Mhz 14-14-14-28-42 @ 1.37vCore/.98vSoc]
Video Card(s) Asus ROG Strix RTX 2060 OC
Storage 970 EVO 500GB nvme, 860 EVO 250GB SATA, Seagate Barracuda 1GB HDD
Display(s) 32" Samsung F395 [1080/60]
Case NZXT S340 Elite
Audio Device(s) Schiit Modi 2 Uber, Sys, Vali 2, Scarlett 2i2 gen2 - LSR 305's, DT-990 Pro's, HD600's
Power Supply Corsair RM650x v2
Mouse iunno whatever cheap crap logitech *clutches Xbox 360 controller security blanket*
Keyboard HyperX Alloy Pro
Software Windows 10 Pro
Benchmark Scores Nothing too impressive, but it serves me well. Good to be fully back in it with a decent build!
All I've got are two Corsair ML 140's on the front intake. Whether I go 120mm or 140mm, my case can only take two front fans so 140mm it is. They peak at around 1100 rpm but typically it's more like 500-800. As far as I can tell, more air cannot physically be drawn to the case. It overcomes the restriction of the filter and front panel about as well as possible. If I run the same stress test, one run with those fitted and another without, I see roughly the same temperatures at the same speeds. It's a good balance. Suckers have some pull even at low RPM's and they're pretty quiet!

My case (NZXT S340 Elite) also has a top 140mm and rear 120mm exhaust spot, but I don't populate them. I found that all they were doing was making the front intake work harder to push the same air through and directly contributing to noise themselves. The flow pattern just wasn't right, I think. The exhaust must've been throwing a wrench in it. I had exhaust from the GPU being drawn right back in underneath. CPU cooler was working harder, too. Just removing the exhausts reduced its RPM's a good bit. And that's not to mention the dust being sucked in from god knows where. My setup runs much quieter, holds lower temps, and draws in far less dust without the exhaust fans. But I think the worst part was the nasty resonance the exhausts caused. Just no benefit. I mean, it ran fine with them in and I kind of figured "why not?" but it really was holding things back more than it was helping.

It really does perform great this way. I run a Ryzen 2600 at 4ghz all-core and verrry rarely does it ever break 55C. And by then my CPU cooler (Dark Rock 4) is just *starting* to approach 1000RPM. More typically I'm seeing maxes of 800, over several days running and carrying out all sorts of tasks. Meanwhile my Strix 2060 will boost to nearly 2100mhz barely breaking a sweat. The only two games to ever push it over 70C have been Metro Exodus and SOTTR... and even then it's just barely hitting 70. Most games are lower to mid 60s. The fans there can get up to 1600RPM under heavy strain, but that really isn't loud for that cooler... ~50% of max speed. And that sucker kicks up some watts! Just shy of 200w, in fact. Decent amount of heat coming off of it, but it all makes it out easily.

I've put in a lot of time to getting the best, quietest performance out of this setup, playing with different configurations of different fans, a couple of different CPU coolers, OCD fan-curve tweaking... everything I could think to isolate, I did. I also did my best to find the best performance compromise for my CPU. The boost on the vanilla 2600 is kind of a shame. Very efficient, but it leaves a lot of the performance off of the table for anything that hits multiple cores. So it had to be all-core, which means more heat and power consumption. After extensive fuckery I found the max all-core to be 4.3ghz! But as tempting as it is to run it there just because I'm lucky enough to have one of the few that does it well enough to actually run it there continuously, the heat is too much. I take that voltage headroom and use it for efficiency. It has the headroom and stability to run that 4.3ghz OC, so it also doesn't take as much as your typical 2600 to run lower. I don't fear the heat, but I greatly dislike the screaming dinosaur sounds my computer makes when I run it that way.

4ghz ended up being the ideal point. Past that, the performance gains aren't as significant as they are at any point below it, and the power usage starts to go up at an exponential rate. Not just more voltage, but quite a lot more current when those cores start getting nailed. 4ghz is stable at 1.1ish volts, which as far as I can tell is about the best voltage you can ask for. But to get to 4.1 I'm already getting closer to 1.3v. That combined with the extra current needed results in a 10C temperature increase on the same fan curve. 4.2 is another 5C over that, as well as firmly over 1.3v. 4.3, I'm approaching 1.5v and going over 200w... nuff said. It clearly likes 4ghz best, so that's where it stays!

And then, there's other little things. I've got rubber washers on both sides of the screws for my intake fans, just to help dampen vibrations. And it does seem to help. I also try to keep all of the space around the machine open and keep everything clean to minimize obstruction... and I also have it near the AC exhaust. The GPU was a little tricky. There is a certain RPM range you have to stay out of because it makes a resonant humming sound, so I set the curve so it never lingers there. Just a steep jump at that RPM range. Hueristics help significantly, too. Temperatures are just slightly higher due to the response delay, but they're also more stable... RPM's overall tend to stay a bit lower. And idle-stopping with this card is out of the question... the fans on this card are ridiculously noisy when they start up... not to mention when they first kick-up they go up to very high RPMs before settling down... I mean, when you're going from no load to high load and temperatures jump, makes sense the fans might too. Some cards handle it better than others. But with the Strix, I couldn't have that obnoxious shit randomly bothering me.

I'm at a point where I don't wonder what's best for my setup, fans/cooling-wise. I just feel like there's nothing left to optimize. It does everything I need it to nice and snappy-like and I barely know it's there by the sound. Meanwhile the parts inside are staying (I think) pretty respectably cool. I picked the parts I did partially with efficiency in mind. Right out of the box, both the Ryzen 2600 and many of the RTX 2060 cards are pretty easy to cool. With optimal configurations they really shine in that department. It's really what they're best at - they do well delivering solid performance with really good thermals. I mean, a decent sized tower cooler, two fans, and a chunky, triple-fan GPU cooler get the job done well enough I think.

It's interesting to see how people run their airflow. Everyone has their rules for what works and what doesn't, but honestly I think advice can only take you so far. The only way to know what's best for your case, parts, and cooling solution is to play around with it. There's nothing mystical or arbitrary about it. All you have to do is apply some basic rigor. That's the only way to know. What generally makes sense may not be the best, depending on the case layout, placement in the room, and components inside.
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