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* * Ways to Better Cooling; Airflow, Cooler & Fan Data..*

post #1 of 971
Thread Starter 
Got tired of posting instructions and guides over and over and over, so decided to start a thread for them.

Please do not post unnecessarily as it will make it harder for others to find what they are looking for.

This thread is not for opinions of the data or tutorials.

If you have questions start a thread to discuss them.

Topic List & Post #:
02: How to monitor air temperature different places inside of case:

03:

04: PWM Fans Have Their Own Custom Independent PWM to RPM Curves !!

. . . Controlling case fans with PWM signal from motherboard CPU and / or GPU fan header.

. . . Normal PWM Splitter with PSU Power & Auxiliary RPM Plugs

. . . How to Monitor RPM of Fans on Splitters & Hubs


05: How airflow works
. . . Setting up a case for optimum cooling


06: Cooler Size and Clearance Comparison

07: Cooler Cooling Comparison on 117-345watt CPU size heat source

09: Downflow / Pancake Cooler Fan Orientation for Better Cooling

10: How to Apply Thermal-paste

. . . Concave and Convex Cooler Base on Different CPU IHS Surface Shapes

. . . TIM (Thermal Interface Material), How Good Should We Go?

. . . Direct Metal to Metal, No TIM Layer In-between!

. . . CPU Chip Size Under IHS

11.
P-Q Curve

. . . How Airflow and Static Pressure Specifications relate to real world use

. . . Actual Airflow Versus Peak CFM & Static Pressure.


13. TIM (Thermal Interface Material), How Good Should We Go?

15. Case Bottom Spacing Effect on Airflow to Bottom Fans

. . . Grill & Filter Effect on Airflow & Noise level

. . . Grill & Filter Effect on Airflow & Noise level

16. PWM control with PSU power to PWM fan and PWM adapter with 12v power from PSU

. . . PWM Header & Plug Pinout

17. How to Make Air Ducts

19. Phillips vs PosiDriv Screws & Screwdrivers Don't confuse them!!

21: How Intake & Exhaust Fans Close to Each Other Can Cause Airflow Loop

23: 120mm to 140mm mounting adapter for 140mm fans with 120mm mounts

25: Thermalright Bolt Through Mounting Kits for thick base coolers

27: Noctua NF-A14 & NF-A15 series fans compared to Thermalright TY-140 series fans

29: How to Figure Out What CPU and RAM Clearances Are

31: Thermalright TY-14x fan series

33: Vibration Dampeners & Mounts

35: PH-TC14PE vs Nepwin 280 w/ stock and hi-performance fans by our own airisom2

36: Squaring TY-14x fans

37: Making PH-TC14PE Fan Mounting Clips for TY-140 series fans ]
. . . Mounting TY-140 series fans on PH-TC14PE


40: GPU PWM to Normal PWM Splitter with PSU Power & Auxiliary RPM Plug

41: Fan Vibration Dampening Using Grommets like used for Electrical Work

43: Fan Bearing Types; Ball-Bearing Versus Sleeve Bearing and It's Fluid Dynamic Variants

45: Phanteks Case Grill & Panel Clip Operation

48; Fractal Design Define cases modified to 140mm fans, bottom & back grills removed

63: Phanteks Enthoo Luxe and Pro Bottom Filter Modification so it is One Long Filter That Slides Out the Front

65: Phanteks PWM Fan Hub Review

Edited by doyll - 1/29/17 at 12:57am
post #2 of 971
Thread Starter 
How to monitor air temperature different places inside of case:
  • A cheap indoor/outdoor thermometer with a piece of insulated wire and a plastic clothspin works great.
  • Made up with floral wire and tape. We don't want anything to short out with metal. wink.gif
  • Clip and position sensor where I want to check the temp. Make it easy to see what the air temp going into components actually is relative to room temp. wink.gif
  • Optimum cooling is when air temps going into coolers only being 2-3c warmer than room.. 5c or less is good.

Edited by doyll - 3/30/15 at 3:28am
post #3 of 971
Thread Starter 
reserved
Edited by doyll - 3/30/15 at 3:34am
post #4 of 971
Thread Starter 
PWM Fan Independent Speed Curve
PWM fan rpm is not a fixed ratio or percentage of PWM signal. The PWM signal to rpm is part of the programming in PWM circuitry built into each PWM fan.
Here are some examples. Black graph line (top line in chart) is fan rpm; PWM % is shown across bottom of chart. Notice how all of these fans are flat-lining at idle at different minimum fan RPM. PWM% signals below this minimum fan RPM have no effect on fan. Also notice how the PWM% to rpm is not a the same progression for each fan .. it is not a linear progression, but is instead a custom progression that is programmed into each fan's internal PWM circuit. wink.gif


All graphs are from Thermalbench.com fan tests and reviews.

Normal PWM Splitter with PSU Power & Auxiliary RPM Plugs


How to Monitor RPM of Fans on Splitters & Hubs


Controlling case fans with PWM signal from motherboard CPU fan header and GPU fan header.

There are some limitations:
  • Obviously motherboard and GPU must have PWM
  • Obviously fans must be PWM
  • Motherboard can only support 8-9 fans (PWM signal strength gets too weak)
  • No idea how many fans GPU can support.

Setting up motherboard PWM control of PWM case fans:
  • Use a PWM splitter with molex/sata connector. Gelid and Swiftech are my preferred. I do not use Akasa PWM splitters because their wire temination into connectors is very poorly designed. Look at one and you will notice all wire distribution is at the connector .. all flex and load is at connector .. while ones like Gelid have cable distribution away form the connectors.

    http://www.pccasegear.com/index.php?main_page=product_info&products_id=17923
    http://www.swiftech.com/8-waypwmsplitter.aspx
    https://www.amazon.co.uk/Phobya-8x-4-Pin-Splitter-PWM/dp/B00OD7MO6E
    http://silverstonetek.com/product.php?pid=526&area=en
  • Plug PWM splitter to motherboard CPU fan header and PSU
  • Use CPU cooler fan as "master" fan. This is the fan that sends rpm signal to motherboard PWM header.
  • Additional CPU cooler fans and case fans will ramp u and down with CPU fan.
  • Can use a second PWM splitter on 3-way & 4-way PWM splitter.
  • Setup fan speed curve with motherboard bios or software. Gigabyte has EasyTune 6 and Asus has SmartFan. I set minimum at 30% fan @ 30c and maximum at 100% @ 65c. Than watch temps and see if you want more or less rpm to keep temperature and noise where you want them. My sig rig idles 24-29c @ 700rpm; 100% all cores is 42-48c :950-1050rpm.

Setting up GPU PWM control of case fans:

modDIY has several adapters and splitters for this.
mini 4-pin PWM adapters
http://www.moddiy.com/products/Mini-4%252dPin-GPU-%28Female%29-to-Mini-4%252dPin-GPU-%28Male%29-%7B47%7D-4%252dPin-Fan-%28Male%29-Cable-Splitter.html

Mini 5-pin PWM adapters
http://www.moddiy.com/products/5%252dPin-VGA-PWM-Mini-PH-Connector-to-Dual-PH-Mini-4%252dPin-Fan-Cable-Splitter.html

GPU PWM to Normal PWM Splitter with PSU Power & Auxiliary RPM Plug



modDIY has several adapters and splitters for this.
mini 4-pin PWM adapters
Mini 4-Pin GPU (Female) to Mini 4-Pin GPU (Male) / 4-Pin Fan (Male) Cable Splitter

http://www.moddiy.com/products/Mini-4%252dPin-GPU-%28Female%29-to-Mini-4%252dPin-GPU-%28Male%29-%7B47%7D-4%252dPin-Fan-%28Male%29-Cable-Splitter.html

And many more.
http://www.moddiy.com/search.php?search_query=mini+VGA++fan+adapter&x=0&y=0

Mini 5-pin PWM adapters
5-Pin VGA PWM Mini PH Connector to Dual PH Mini 4-Pin Fan Cable Splitter

http://www.moddiy.com/products/5%252dPin-VGA-PWM-Mini-PH-Connector-to-Dual-PH-Mini-4%252dPin-Fan-Cable-Splitter.html

5-Pin VGA PWM Mini PH Connector to Dual PWM 4-Pin Fan Cable Splitter

http://www.moddiy.com/products/5%252dPin-VGA-PWM-Mini-PH-Connector-to-Dual-PWM-4%252dPin-Fan-Cable-Splitter.html
http://www.moddiy.com/products/5%252dPin-VGA-PWM-Mini-PH-Connector-to-Dual-PH-Mini-4%252dPin-Fan-Cable-Splitter.html
Edited by doyll - 3/27/17 at 12:11pm
post #5 of 971
Thread Starter 
How airflow works
Airflow is simply displacement; for air to come into case, air must be leaving case .. or .. for air to leave the case, air must be coming into case.
Think of the air around us as water and we are divers in it and a sunken van is a computer case.
  • We can't move more water into the van (case) through an open window (vent) unless we have another open window (vent) somewhere else in the van (case) moving the same amount of water (air) out through a window on other side of van (case).
  • We can't take any water out of van unless we have the same amount of water coming in at the same time.
  • This means we have to have as many open windows flowing water into van as we have open windows flowing water out.
  • This is exactly how airflow works. Intake fan pushing / flowing air into case is pushing / flowing the same amount of air out of case.
  • Adding an exhaust fan can help case airflow, same as adding a back fan on some coolers.
  • But with good case intake fans we don't need exhaust fans, same as good cooler / radiator fans don't need pull fans. wink.gif
  • This is why I used to always change stock intake fans. Now some cases are finally coming with intake fans that have high enough pressure ratings to not need 'helper' (exhaust) fans. thumb.gif


Setting up a case for optimum cooling

Setting up the case for optimum cooling is often the hardest and most time consuming part of a build... And the most neglected by most builders.
  • There is much more to cooling than good cases and good CPU / GPU coolers. Add the fact that many GPU's make more heat than CPU means getting that heat out of the case and keeping a cool airflow to components can be a challenge.
  • Cases, especially those with filters, usually benefit from fans with higher static pressure ratings than stock fans... "cooler" fans instead of "case" fans.
    Intakes typically have more restricted than exhaust because of air filters, more restrictive grills, HDD cages, etc.
  • I prefer more intake than exhaust. And don't confuse number of fans with amount of airflow... or airflow with airblow
  • airflow is flowing cool air from intake to component and flowing hot air from component out of case without the hot air mixing with the cool air.
  • airblow is lots of fans blowing air with some of hot air from components mixing with cool air making it warmer resulting in warm air not cooling components as well as the cool air will.
  • Putting fans in case as intake and/or exhaust is only the first step. These fans only move air in and out of case.
  • This does not mean heated air is not mixing with cool air.
  • Nor does it mean cool air is going to where it is needed.
  • Getting the air to flow inside of case properly is even more important. We still need to manage where the air flows inside the case. We can do this several ways; deflectors, more intake fans.. & exhaust fans, removing vent grills, removing HDD cage, using fans with higher pressure/airflow, building ducts to or from CPU/GPU cooler, etc.
  • Using a remote temperature sensor to monitor what air temps are is the key to finding out where the cool air is flowing and knowing heated air is not mixing into it. By monitoring this we can than make changes to get airflow the way we want it.
  • Keep in mind your case needs to flow more air than components do. It isn't so much how many fans but how well they flow air through the case. If component fans move more air than case fans move through case components are using their own heated exhaust to make up the difference and case heats up. Good rule of thumb is 25-50% more case cfm than component cfm but well tuned airflow can be almost equal equal.
  • Traditional tower cooler exhausting toward back of case must have rear / rear & top back case exhaust fan that remove as much or more cfm than cooler fans exhaust.
  • A duct from back of cooler to back of case (like Thermalright HR-22 uses) is also an option that works very well.

Example of Cool & Quiet System
  • My Define R2 system has three TY-140 74cfm intake fans. (no exhaust fans) in case while CPU has TY-143 130cfm fan and GPU has two TY-100 44cfm fans
  • Case = 222cfm
  • Components = 218cfm
  • Air temp inside of case going into coolers is never more than 3c above room.
  • 2 front TY-140 & CPU cooler TY-143 fans are PWM controlled by CPU
  • Bottom TY-140 & GPU TY-100 fans are PWM controlled by GPU


It is amazing how much cooler a system runs (and quieter) once the case airflow is setup to keep heated exhaust from contaminating cool intake air. Once we start doing these things, the concept seems like a no-brainer, yet most users seem to think more fans and/or powerful fans are needed to get better cooling. The reality is it's not so much the power and amount of air the fans move. but the currents / pathways the air flows in on it's way through the case that is important. Fan power/airflow only needs to be a little more than the amount the components are using at any given time. Using too many, fan and having too much airflow airblow can be as detrimental to case's flow pattern as not using fans with enough flow .. and if the flow isn't tuned to keep cool and heated air separate the system is not going run as cool as it can.


How to monitor air temperature different places inside of case:
  • A cheap indoor/outdoor thermometer with a piece of insulated wire and a plastic clothspin works great.
  • Made up with floral wire and tape. We don't want anything to short out with metal. wink.gif
  • Clip and position sensor where I want to check the temp. Make it easy to see what the air temp going into components actually is relative to room temp. wink.gif
  • Optimum cooling is when air temps going into coolers only being 2-3c warmer than room.. 5c or less is good.

Edited by doyll - 5/19/17 at 2:02am
post #6 of 971
Thread Starter 
Cooler Size and Clearance Comparison

This list is some,but by no means all, top coolers and their sizes. There are at least twice as many as in this list. More will be added as I squire and measure them.

Several like Cryorig R1 Ultimate & Universal, all Macho and HE-1 are off-center to the rear giving better RAM clearance. Others like Silver Arrow SB-E & IBE, NH-D15S, HR-22, TRUE Spirit 140 BW Rev. A, etc. are offset for better PCIe socket clearance. Many of the big single tower coolers are just as good as the twin towres. For example TRUE Spirit 140 Power as good as NH-D14 (and quieter) .. as are NH-U14S, Archon and Le Grand Macho (w/ fan).

If you notice any errors, please let me know.

Edited by doyll - 3/2/16 at 8:14am
post #7 of 971
Thread Starter 
Cooler Cooling Comparison on 117-345watt CPU size heat source

And here is temps based on 117-345watt of CPU heat.




Code:
CPU Cooler Temperature Database

        Cooler                  Fans    Fan Model       RPM/CFM         345.1W  289.9W  232.1W  175.4W  117.1W   dBA*
                                                                          Temperatures    in       Celcius 
Cooler Master Nepton 280L       2x JetFlo 140           2000 / 122.5    17.1    14.6    11.9    9.2     6.2     55.8
Cooler Master Seidon 240M       2x DF1202512RFUN        2400 / 86       20.2    17.1    14.1    10.4    7.9     50.7
Silverstone Tundra TD02         2x AS1225H12            2500 / 92.5     20.6    17.6    14.6    10.7    6.9     49.6
Corsair H105                    2x SP120L               2700 / 3        21.5    18.5    15.8    11.9    8.5     54.3
Corsair H110                    2x      ?               1500 / 94       22.5    19.3    16.0    12.1    8.8     48.7

Corsair H100i                   2x SP120L               2700 / 73       23.8    20.5    17.0    13.0    9.9     54.3
NZXT    Kraken X60              2x FX-140               2000 / 98.3     23.9    20.8    17.3    12.9    9.0     51.2
Corsair H100                    2x      ?               2500 / 92       24.4    20.6    16.7    12.9    9.0     51.2
Noctua  NH-D15                  2x NF-A15               1500 / 82.5     24.0    21.1    18.0    13.7    10.1    41.5
Cooler Master Seidon 120XL      2x DF1202512RFUN        2400 / 86       25.5    21.2    17.2    13.2    9.0     53.2

Akasa   Medusa                  1x AK-FN059             1900 / 84       26.7    22.5    18.7    13.7    10.1    48.1
                                1x AK-FN073             1600 / 110
Thermalright SilverArrow SB-E   1x TY-150               1100 / 84       26.9    22.8    18.7    14.1    9.5     37.4
                                1x TY-141               1300 / 74
Noctua  NH-U14S                 1x NF-A15               1500 / 82.5     27.0    22.9    19.4    14.9    10.6    35.8
Phanteks PH-TC14PE Black        2x PH-F140              1300 / 88.6     27.4    23.5    19.2    14.1    9.9     41.3
Antec   KÜHLER 1250             2x      ?               2400 / 98       27.4    22.9    18.9    14.9    10.9    54.4

Be Quiet! Dark Rock Pro         1x T12025-MF-PWM        1500 / 67.8     28.2    25.9    20.2    16.4    11.2    38.2
                                1x T13525-MF-PWM        1700 / 57.2
Cooler Master Eisberg 240L      2x SA12025SA2           1600 / 60.2     28.9    23.6    19.6    15.0    10.3    48.5
Thermaltake Frio Extreme        2x PLA14025S12H         1800 / 106.2    29.3    24.8    20.4    15.9    10.7    48.7
Enermax Liqtech 240             2x ELC-LT120HP          2500 / 111      29.6    25.2    21.2    15.9    11.4    57.4
Silverstone Tundra TD03         2x AS1225H12            2500 / 92.5     29.7    24.9    19.8    15.5    10.7    51.4

Prolimatech Megahalems BlkViper 2x AK-FN059             1900 / 83.6     30.4    25.8    23.4    16.0    11.5    46.5
Noctua  NH-D14                  1x NF-P14               1200 / 64.9     30.6    26.2    21.3    16.3    11.8    38.2
                                1x NF-P12               1300 / 54.3
Antec   KÜHLER 920              2x      ?               2400 / 110      30.8    27.0    22.8    18.6    14.0    60.5
Scythe  Mugen 3                 1x SY1225SL12M-P        1200 / 68.54    31.0    25.6    21.3    14.8    10.8    42.7
Xigmatek Aegir (SD128264)       1x PLA12025S12M-4       2200 / 89.45    31.1    26.0    20.5    15.2    10.3    45.9

Thermaltake Frio OCK            2x EF RB14025SH         2100 / 121      31.3    26.7    22.1    18.1    13.1    41.1
Corsair H90                     1x SP140                1500 / 94       31.5    26.3    21.8    16.5    11.9    59.3
Silverstone Argon AR01          1x AS1225H12            2200 / 81.40    31.7    26.9    22.3    17.4    12.1    42.8
Thermalright Ultra 120 eXTreme  1x PLA12025S12M-4       2200 / 89.45    32.1    27.0    22.5    17.0    12.0    45.9
Enermax Liqtech 120X            2x ELC-LT120HP          2500 / 111      32.4    26.9    22.3    16.9    12.2    57.3
ELC-LT120HP     2500 /111

Prolimatech Genesis Black       2x PH-F140              1300 / 88.6     33.1    24.4    19.3    14.2    9.7     41.7
Xigmatek Dark Knight SD1283     1x A1225H12S            2200 / 89.45    34.4    28.8    23.5    18.1    12.8    42.8
(Night Hawk Edition)
Alpenfohn Matterhorn Pure       1x      ?               1500 / 108      34.5    29.1    23.8    17.9    12.6    39.8
Noctua  NH-U12S                 1x NF-F1                1500 / 55       35.3    29.9    24.9    19.0    13.7    37.3    
Corsair H75                     2x AF120L               2000 / 54       35.4    29.6    24.9    19.0    14      44.8

Antec   KÜHLER 650              1x      ?               2400 / 98       36.2    30.5    24.9    20.1    14.9    47.4
Scythe  Mine 2                  2x SM1425SL12H          1700 / 92.4     37.7    31.7    25.9    19.7    13.8    38.0**
Cooler Master TPC 800           2x PLA12025S12M-4       2200 / 89.45    38.6    30.1    22.6    15.8    10.6    43.1
Prolimatech Panther             1x RL4R S1202512LNP-4M  1600 / 72.7     42.0    35.9    29.6    21.8    16.5    41.5

Antec KÜHLER 620                1x      ?               2000 / ?        42.0    35.5    29.4    22.6    16.1    43.1

NZXT HAVIK 140                  2x      ?               1200 / 90.3     42.3    35.7    29.0    22.7    14.7    42.5
Be Quiet! Shadow Rock 2         1 BQ PUW2-12025-MR-PWM  1600 / 51       45.4    39.7    32.8    25.7    19.4    38.3


* Measured at 0.5m distance
** Measured with old db meter (not accurate)

http://www.thelab.gr/heatsinks-coolers-watercooling-reviews/cpu-cooler-review-database-89014.html


Should keep you busy for a few minutes. biggrin.gif

If you find any errors please let me know.
Edited by doyll - 5/4/15 at 2:08am
post #8 of 971
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Quote:
Originally Posted by doyll View Post

Cooler Cooling Comparison on 117-345watt CPU size heat source

And here is temps based on 117-345watt of CPU heat.
Code:
CPU Cooler Temperature Database

        Cooler                  Fans    Fan Model       RPM/CFM         345.1W  289.9W  232.1W  175.4W  117.1W   dBA*
                                                                          Temperatures    in       Celcius 
Cooler Master Nepton 280L       2x JetFlo 140           2000 / 122.5    17.1    14.6    11.9    9.2     6.2     55.8
Cooler Master Seidon 240M       2x DF1202512RFUN        2400 / 86       20.2    17.1    14.1    10.4    7.9     50.7
Silverstone Tundra TD02         2x AS1225H12            2500 / 92.5     20.6    17.6    14.6    10.7    6.9     49.6
Corsair H105                    2x SP120L               2700 / 3        21.5    18.5    15.8    11.9    8.5     54.3
Corsair H110                    2x      ?               1500 / 94       22.5    19.3    16.0    12.1    8.8     48.7

Corsair H100i                   2x SP120L               2700 / 73       23.8    20.5    17.0    13.0    9.9     54.3
NZXT    Kraken X60              2x FX-140               2000 / 98.3     23.9    20.8    17.3    12.9    9.0     51.2
Corsair H100                    2x      ?               2500 / 92       24.4    20.6    16.7    12.9    9.0     51.2
Cooler Master Seidon 120XL      2x DF1202512RFUN        2400 / 86       25.5    21.2    17.2    13.2    9.0     53.2
Akasa   Medusa                  1x AK-FN059             1900 / 84       26.7    22.5    18.7    13.7    10.1    48.1
                                1x AK-FN073             1600 / 110

Thermalright SilverArrow SB-E   1x TY-150               1100 / 84       26.9    22.8    18.7    14.1    9.5     37.4
                                1x TY-141               1300 / 74
Noctua  NH-U14S                 1x NF-A15               1500 / 82.5     27.0    22.9    19.4    14.9    10.6    35.8
Phanteks PH-TC14PE Black        2x PH-F140              1300 / 88.6     27.4    23.5    19.2    14.1    9.9     41.3
Antec   KÜHLER 1250             2x      ?               2400 / 98       27.4    22.9    18.9    14.9    10.9    54.4
Be Quiet! Dark Rock Pro         1x T12025-MF-PWM        1500 / 67.8     28.2    25.9    20.2    16.4    11.2    38.2
                                1x T13525-MF-PWM        1700 / 57.2

Cooler Master Eisberg 240L      2x SA12025SA2           1600 / 60.2     28.9    23.6    19.6    15.0    10.3    48.5
Thermaltake Frio Extreme        2x PLA14025S12H         1800 / 106.2    29.3    24.8    20.4    15.9    10.7    48.7
Enermax Liqtech 240             2x ELC-LT120HP          2500 / 111      29.6    25.2    21.2    15.9    11.4    57.4
Silverstone Tundra TD03         2x AS1225H12            2500 / 92.5     29.7    24.9    19.8    15.5    10.7    51.4
Prolimatech Megahalems BlkViper 2x AK-FN059             1900 / 83.6     30.4    25.8    23.4    16.0    11.5    46.5

Noctua  NH-D14                  1x NF-P14               1200 / 64.9     30.6    26.2    21.3    16.3    11.8    38.2
                                1x NF-P12               1300 / 54.3
Antec   KÜHLER 920              2x      ?               2400 / 110      30.8    27.0    22.8    18.6    14.0    60.5
Scythe  Mugen 3                 1x SY1225SL12M-P        1200 / 68.54    31.0    25.6    21.3    14.8    10.8    42.7
Xigmatek Aegir (SD128264)       1x PLA12025S12M-4       2200 / 89.45    31.1    26.0    20.5    15.2    10.3    45.9
Thermaltake Frio OCK            2x EF RB14025SH         2100 / 121      31.3    26.7    22.1    18.1    13.1    41.1

Corsair H90                     1x SP140                1500 / 94       31.5    26.3    21.8    16.5    11.9    59.3
Silverstone Argon AR01          1x AS1225H12            2200 / 81.40    31.7    26.9    22.3    17.4    12.1    42.8
Thermalright Ultra 120 eXTreme  1x PLA12025S12M-4       2200 / 89.45    32.1    27.0    22.5    17.0    12.0    45.9
Enermax Liqtech 120X            2x ELC-LT120HP          2500 / 111      32.4    26.9    22.3    16.9    12.2    57.3
ELC-LT120HP     2500 /111
Prolimatech Genesis Black       2x PH-F140              1300 / 88.6     33.1    24.4    19.3    14.2    9.7     41.7

Xigmatek Dark Knight SD1283     1x A1225H12S            2200 / 89.45    34.4    28.8    23.5    18.1    12.8    42.8
(Night Hawk Edition)
Alpenfohn Matterhorn Pure       1x      ?               1500 / 108      34.5    29.1    23.8    17.9    12.6    39.8
Noctua  NH-U12S                 1x NF-F1                1500 / 55       35.3    29.9    24.9    19.0    13.7    37.3    
Corsair H75                     2x AF120L               2000 / 54       35.4    29.6    24.9    19.0    14      44.8
Antec   KÜHLER 650              1x      ?               2400 / 98       36.2    30.5    24.9    20.1    14.9    47.4

Scythe  Mine 2                  2x SM1425SL12H          1700 / 92.4     37.7    31.7    25.9    19.7    13.8    38.0**
Cooler Master TPC 800           2x PLA12025S12M-4       2200 / 89.45    38.6    30.1    22.6    15.8    10.6    43.1
Prolimatech Panther             1x RL4R S1202512LNP-4M  1600 / 72.7     42.0    35.9    29.6    21.8    16.5    41.5

Antec KÜHLER 620                1x      ?               2000 / ?        42.0    35.5    29.4    22.6    16.1    43.1
NZXT HAVIK 140                  2x      ?               1200 / 90.3     42.3    35.7    29.0    22.7    14.7    42.5

Be Quiet! Shadow Rock 2         1 BQ PUW2-12025-MR-PWM  1600 / 51       45.4    39.7    32.8    25.7    19.4    38.3


* Measured at 0.5m distance
** Measured with old db meter (not accurate)

http://www.thelab.gr/heatsinks-coolers-watercooling-reviews/cpu-cooler-review-database-89014.html
Should keep you busy for a few minutes. biggrin.gif

If you find any errors please let me know.
could you check those results some are bad
Edited by PontiacGTX - 5/29/14 at 1:20pm
  
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post #9 of 971
Thread Starter 
Downflow / Pancake Cooler Fan Orientation for Better Cooling
I've found more often than not using the fan to pull air up from cooler give significantly lower temps than pushing air into cooler.

Reason is pushing air in through cooler means hot air coming out toward motherboard turns out, hits RAM, GPU, I/O houseings etc. turning up past cooler & fan and is sucked back into fan.

With fan pulling out of cooler air flows over motherboard, up into cooler, fan and out side vents.

Even on open bench testing just turning the fan often lowers mobo and CPU temps by 5-8c



You think I used enough pretty arrows? :tongue.gif
Edited by doyll - 5/25/15 at 8:39am
post #10 of 971
Thread Starter 
How to Apply Thermal-paste

Tiny dot is all that is needed. . A print like this on CPU is good. No surplus on heatsink. Temp is 50c

http://www.hardwaresecrets.com/article/What-is-the-Best-Way-to-Apply-Thermal-Grease-Part-1/1303/2


Small dot is biggest needed. Print is complete CPU & litte extra. Notice the surplus at top and bottom of heatsink . Temp is 50c too.

http://www.hardwaresecrets.com/article/What-is-the-Best-Way-to-Apply-Thermal-Grease-Part-1/1303/3


Bigger dot that is just too big. Surplus pushed out around CPU. Also on heatsink. And temp is 2c higher at 52c.

http://www.hardwaresecrets.com/article/What-is-the-Best-Way-to-Apply-Thermal-Grease-Part-1/1303/4


Keep in mind all of these are within 2c margin of error. In fact the temperature difference could be as little as 1c or as great as 5c.

http://www.hardwaresecrets.com/article/What-is-the-Best-Way-to-Apply-Thermal-Grease-Part-1/1303/10



Direct Metal to Metal, No TIM Layer In-between!
Be careful not to apply too much TIM. We want only enough to fill the voids in the crystalline structure of the metal where it does not give direct metal to metal contact. We do not what TIM to form a layer between the IHS and cooler base
In case you do not know, TIM heat transfer is not even close to what good metal to metal contact is, but it is much better than what air transfers when there is no TIM in the voids created by the pores of the metal structure.

Heat tranfer ability of different things:
Copper is 400 W/(m·K) heat transfer
Aluminum 210 W/(m·K))
Lead is 35 W/(m·K)
Typical TIM is rated 3.5-10.5 W/(m-K) (GC Extreme 8.5W/(m·K), Chill Factor III 3.5W(m-K) in use this is only 1-2c difference in CPU temp)*
Air is 0.024 W/(m·K)

To put that into perspective, any way you look at it metal to metal is 50 times better than TIM:
Copper is 47 times better than Gelid GC Extreme TIM & 114 times better than Chill Factor III
TIM is 333 times better than air at sea level.

*i don't know how accurate the W(m-K) ratings are onl TIM, but do know the temperature differences between top 30 or 40 TIMs are all within a degree or two, except for liquid metal variants .. which are a degree or two better.



CPU Chip Size Under IHS
Also keep in mind the area of IHS that transfers the heat from CPU chip is much smaller than the total top of IHS. It varies from CPU to CpU. While Intel chips it is generally a square or rectangular chip in the center part of IHS, AMD CPUs sometimes have the chips in the corners.








Edited by doyll - 12/2/16 at 7:43am
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