Overclock.net › Forums › Cooling › Water Cooling › Why you should probably not buy a CLC cooler
New Posts  All Forums:Forum Nav:

Why you should probably not buy a CLC cooler - Page 25

post #241 of 465
Quote:
Originally Posted by claes View Post

It seems to me that a) sure, pwm curves are different for each motherboard, but it seems useful to measure across PWM like thermalbench does and b) as far as I can tell those fans are responding to PWM like I would expect them to... isn't this just a difference of the fan's controller's programming? AFAICT the graph here just indicates that ThermalRight fans respond to PWM well, faster fans are faster, slower fans slower, etc... what do you guys mean by "wonky comparisons" - doesn't this just mean that faster fans are faster and slower fans are slower? Why is this not worth measuring?

Just curious, thanks for the discussion smile.gif
PWM curves change depending on fan too. It is not just the motherboard signal programing, but also the fan's PWM controller to pulse power to fan also has programming. And these are different from fan to fan.
I guess you didn't notice that in the graph I posted of how TY-140 and TY147 perform the same on same PWM signal, but TY-147A idles lower and runs up slower until 1100rpm or so before it speed up to match TY-140 & TY-147. This is the result of different in fan, not the motherboard signal.
post #242 of 465
No... I understand, it just seems to me that this simply means they are different fans.

I am still confused by the logic - to me this just emphasizes that at 7v, for example, TY-147 will perform differently than the TY-147A (due to the TY-147A's lower starting speed).

confused.gif
finally quiet
(20 items)
 
Peggy
(11 items)
 
Betty - WIP
(17 items)
 
CPUMotherboardGraphicsRAM
i5-760 3.8 + turbo MSI P55-GD80 MSI GTX 970 Golden Edition 16GB Tactical LP 1600 c8 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Pro 128GB OCZ Agility 60GB Spinpoint F3 1TB Noctua NH-U12P SE2 
CoolingOSMonitorMonitor
2x NF-P12, CPU OS X 10.10, 8.1 Ultimate Asus VW246H Ergotron Neo-Flex 
KeyboardPowerCaseMouse
CM Quick Fire Rapid EVGA Supernova G2 850W Silverstone FT-02W CM Spawn 
AudioAudioAudio
Sony TA-AX380 Sennheiser HD 280 KLH 911B 
CPUMotherboardGraphicsRAM
i3-2125 GA-H61N USB3 HD3000 8GB Samsung Miracle RAM 
Hard DriveHard DriveHard DriveCooling
Kingston 60GB 3ware/LSI 9750-4i Hitachi 5k3000 2TB x4 RAID 5 Intel for now 
OSPowerCase
OS X 10.8.2 Corsiar CX430M Fractal Design Node 304 
CPUMotherboardGraphicsRAM
i3-2100 ASUS P8H67-M PRO/CSM ASUS Passive GT 440 4GB Dominator 1600 c8 
Hard DriveOptical DriveCoolingCooling
Hitachi 120GB 2.5" LG BR-RW CM GeminII S + NF-P12 2x NF-R8 - Intake 
CoolingOSMonitorKeyboard
NF-B9 Windows 7 Sony KDL-46NX700 MK700 
PowerCaseMouseAudio
Antec EA-650 Zalman HD160XT, Modded MK700 Yamaha RX-V373 
  hide details  
Reply
finally quiet
(20 items)
 
Peggy
(11 items)
 
Betty - WIP
(17 items)
 
CPUMotherboardGraphicsRAM
i5-760 3.8 + turbo MSI P55-GD80 MSI GTX 970 Golden Edition 16GB Tactical LP 1600 c8 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Pro 128GB OCZ Agility 60GB Spinpoint F3 1TB Noctua NH-U12P SE2 
CoolingOSMonitorMonitor
2x NF-P12, CPU OS X 10.10, 8.1 Ultimate Asus VW246H Ergotron Neo-Flex 
KeyboardPowerCaseMouse
CM Quick Fire Rapid EVGA Supernova G2 850W Silverstone FT-02W CM Spawn 
AudioAudioAudio
Sony TA-AX380 Sennheiser HD 280 KLH 911B 
CPUMotherboardGraphicsRAM
i3-2125 GA-H61N USB3 HD3000 8GB Samsung Miracle RAM 
Hard DriveHard DriveHard DriveCooling
Kingston 60GB 3ware/LSI 9750-4i Hitachi 5k3000 2TB x4 RAID 5 Intel for now 
OSPowerCase
OS X 10.8.2 Corsiar CX430M Fractal Design Node 304 
CPUMotherboardGraphicsRAM
i3-2100 ASUS P8H67-M PRO/CSM ASUS Passive GT 440 4GB Dominator 1600 c8 
Hard DriveOptical DriveCoolingCooling
Hitachi 120GB 2.5" LG BR-RW CM GeminII S + NF-P12 2x NF-R8 - Intake 
CoolingOSMonitorKeyboard
NF-B9 Windows 7 Sony KDL-46NX700 MK700 
PowerCaseMouseAudio
Antec EA-650 Zalman HD160XT, Modded MK700 Yamaha RX-V373 
  hide details  
Reply
post #243 of 465
Motherboard curve is temp vs signal, fan own curve is signal vs rpm.

If you put real 7v/12v, then it should be v=ir, ideally, which should be linear.
Edited by baii - 2/14/16 at 2:51pm
post #244 of 465
Quote:
Originally Posted by claes View Post

No... I understand, it just seems to me that this simply means they are different fans.

I am still confused by the logic - to me this just emphasizes that at 7v, for example, TY-147 will perform differently than the TY-147A (due to the TY-147A's lower starting speed).

confused.gif
No, both will perform the same of 7v.
PWM is always 12 volt. The 12v is pulsed in different lengths and at rates to change the speed.

The motherboard has a program for the PWM signal rates it sends to fan.
Different motherboards send different signal rates at same percent. The rating is linear but the signal rate may not be. It is whatever it's programming is.

The fan has a program to convert the signal sent from motherboard to pulse rate going to fan motor. This conversion may be linear or it may not be. It is whatever it's programming is.
post #245 of 465
Quote:
Originally Posted by Mega Man View Post

i find it funny i found this so i figured i would plop it here
Quote:
Originally Posted by Mega Man View Post

Quote:
Originally Posted by Nick-F View Post

Just recently purchased the H240x unit , and WOW ! soooo much better than my corsair H110i GT , MUCH quieter , better looking and temps are almost 10 Deg C better . Only downside is the black tubing looks really naff , but I am changing that for clear tubing and pastel blue coolant . idleandprimetemps.png 1906k .png file

enjoy ! and i am going to steal your quote to use in another thread !
oh my , in the thread quoted above there is a fanboi, who does not believe, the above is true, say it isnt so ...... corsair must be avenged !
USS CLM8-1701
(39 items)
 
Her Venom
(21 items)
 
Lil Tough Guy
(15 items)
 
CPUMotherboardGraphicsGraphics
AMD FX-8350 Gigabyte 990FXA-UD7 R7970-2PMD3GD5/OC  R7970-2PMD3GD5/OC  
GraphicsGraphicsRAMHard Drive
R7970-2PMD3GD5/OC  R7970-2PMD3GD5/OC  F3-2400C10D-16GTX  OCZ Agility 3 120GB  
Hard DriveHard DriveHard DriveOptical Drive
OCZ Agility 3 120GB  Seagate Barracuda 1TB  Segate Barracuda 3TB Rosewill RCR-IM5001 USB2.0 75 in 1 internal Car... 
Optical DriveCoolingCoolingCooling
Pioneer BDR-208DBK Blu-ray Writer Swiftech H20-220 EDGE HD Liquid Cooling Kit Swiftech Komodo 7970 Swiftech MCP-35X2 
CoolingCoolingCoolingCooling
Swiftech MCP35X2 Heat Sink Swiftech MCP35X Reservoir Swiftech Komodo 7970 Swiftech Komodo 7970 
CoolingCoolingCoolingCooling
Alphacool 240mm XT45 Alphacool 120mm XT45 Alphacool 120mm UT60 FrozenQ PC Mods UV Meteor Light Limited Edition... 
CoolingCoolingOSOS
Koolance Radiator Mounting Bracket with Quick-R... Swiftech Komodo 7970 Windows 7 Windows 8  
MonitorMonitorMonitorMonitor
ASUS VG248QE Black 24" 144Hz 1ms  ASUS VG248QE Black 24" 144Hz 1ms  ASUS VG248QE Black 24" 144Hz 1ms  XFX FXTRISTAND Triple Display Monitor Stand  
KeyboardPowerCaseMouse
Logitech G510 XFX pro 1250w black edition Caselabs MAGNUM M8 Case Razer Naga 
AudioAudioOther
Sony 2.1 Razer Megalodon XFX pro 1250w black edition 
CPUMotherboardGraphicsGraphics
8350 batch 1229 pgn  Asus Crosshair V Formula-Z gigabyte 7770 OC gigabyte 7770 OC 
RAMHard DriveHard DriveHard Drive
F3-2400C10D-16GTX OCZ agaility 3 120  OCZ Agility 3 120gb  Seagate 7200rpm 1tb 
Optical DriveOptical DriveCoolingCooling
Pioneer BDR-208DBK Rosewill RCR-IM5001 USB2.0 75 in 1 internal Car... Swiftech MCP-35X White Top Swiftech Quiet Power 240  
CoolingOSOSMonitor
Swiftech Apogee HD Windows 7 Windows 8 LG E2242 
MonitorKeyboardPowerCase
LG E2242 RAZER Black Lycosa Mirror Special Edition Seasonic x660 Cooler Master Storm Stryker 
Mouse
Razer Lachesis 
CPUMotherboardGraphicsRAM
FX 6100 Sabertooth 990fx R2.0 XFX 7770 Core Edition Samsung 1600 2x4 
RAMHard DriveOptical DriveCooling
Samsung 1600 2x4 Unknown as of now  Piorneer BDR-208DBK Swiftech H220  
OSMonitorKeyboardPower
Windows 8  Samsung 60" 120hz 3d LED TV Unknown Seasonic x750 
CaseMouseAudio
Cooler Master Storm Stryker Unknown Pioneer 5.1 
  hide details  
Reply
USS CLM8-1701
(39 items)
 
Her Venom
(21 items)
 
Lil Tough Guy
(15 items)
 
CPUMotherboardGraphicsGraphics
AMD FX-8350 Gigabyte 990FXA-UD7 R7970-2PMD3GD5/OC  R7970-2PMD3GD5/OC  
GraphicsGraphicsRAMHard Drive
R7970-2PMD3GD5/OC  R7970-2PMD3GD5/OC  F3-2400C10D-16GTX  OCZ Agility 3 120GB  
Hard DriveHard DriveHard DriveOptical Drive
OCZ Agility 3 120GB  Seagate Barracuda 1TB  Segate Barracuda 3TB Rosewill RCR-IM5001 USB2.0 75 in 1 internal Car... 
Optical DriveCoolingCoolingCooling
Pioneer BDR-208DBK Blu-ray Writer Swiftech H20-220 EDGE HD Liquid Cooling Kit Swiftech Komodo 7970 Swiftech MCP-35X2 
CoolingCoolingCoolingCooling
Swiftech MCP35X2 Heat Sink Swiftech MCP35X Reservoir Swiftech Komodo 7970 Swiftech Komodo 7970 
CoolingCoolingCoolingCooling
Alphacool 240mm XT45 Alphacool 120mm XT45 Alphacool 120mm UT60 FrozenQ PC Mods UV Meteor Light Limited Edition... 
CoolingCoolingOSOS
Koolance Radiator Mounting Bracket with Quick-R... Swiftech Komodo 7970 Windows 7 Windows 8  
MonitorMonitorMonitorMonitor
ASUS VG248QE Black 24" 144Hz 1ms  ASUS VG248QE Black 24" 144Hz 1ms  ASUS VG248QE Black 24" 144Hz 1ms  XFX FXTRISTAND Triple Display Monitor Stand  
KeyboardPowerCaseMouse
Logitech G510 XFX pro 1250w black edition Caselabs MAGNUM M8 Case Razer Naga 
AudioAudioOther
Sony 2.1 Razer Megalodon XFX pro 1250w black edition 
CPUMotherboardGraphicsGraphics
8350 batch 1229 pgn  Asus Crosshair V Formula-Z gigabyte 7770 OC gigabyte 7770 OC 
RAMHard DriveHard DriveHard Drive
F3-2400C10D-16GTX OCZ agaility 3 120  OCZ Agility 3 120gb  Seagate 7200rpm 1tb 
Optical DriveOptical DriveCoolingCooling
Pioneer BDR-208DBK Rosewill RCR-IM5001 USB2.0 75 in 1 internal Car... Swiftech MCP-35X White Top Swiftech Quiet Power 240  
CoolingOSOSMonitor
Swiftech Apogee HD Windows 7 Windows 8 LG E2242 
MonitorKeyboardPowerCase
LG E2242 RAZER Black Lycosa Mirror Special Edition Seasonic x660 Cooler Master Storm Stryker 
Mouse
Razer Lachesis 
CPUMotherboardGraphicsRAM
FX 6100 Sabertooth 990fx R2.0 XFX 7770 Core Edition Samsung 1600 2x4 
RAMHard DriveOptical DriveCooling
Samsung 1600 2x4 Unknown as of now  Piorneer BDR-208DBK Swiftech H220  
OSMonitorKeyboardPower
Windows 8  Samsung 60" 120hz 3d LED TV Unknown Seasonic x750 
CaseMouseAudio
Cooler Master Storm Stryker Unknown Pioneer 5.1 
  hide details  
Reply
post #246 of 465
Quote:
Originally Posted by baii View Post

Motherboard curve is temp vs signal, fan own curve is signal vs rpm.

If you put real 7v/12v, then it should be v=ir, ideally, which should be linear.
Just curious what "ir" stands for here smile.gif
Quote:
Originally Posted by doyll View Post

PWM is always 12 volt. The 12v is pulsed in different lengths and at rates to change the speed.

The motherboard has a program for the PWM signal rates it sends to fan.
Different motherboards send different signal rates at same percent. The rating is linear but the signal rate may not be. It is whatever it's programming is.

The fan has a program to convert the signal sent from motherboard to pulse rate going to fan motor. This conversion may be linear or it may not be. It is whatever it's programming is.
This all makes sense to me, but this part doesn't:
Quote:
No, both will perform the same of 7v.
Wouldn't they perform differently given that the TY-147 A would be running a little slower? Or is this the difference you're highlighting (same rpm with same v, different rpm at same pwm output - i.e. lower starting voltage with the A)?

Are any of these reasons not to test USB controlled pumps in their various settings rather than by voltage?
finally quiet
(20 items)
 
Peggy
(11 items)
 
Betty - WIP
(17 items)
 
CPUMotherboardGraphicsRAM
i5-760 3.8 + turbo MSI P55-GD80 MSI GTX 970 Golden Edition 16GB Tactical LP 1600 c8 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Pro 128GB OCZ Agility 60GB Spinpoint F3 1TB Noctua NH-U12P SE2 
CoolingOSMonitorMonitor
2x NF-P12, CPU OS X 10.10, 8.1 Ultimate Asus VW246H Ergotron Neo-Flex 
KeyboardPowerCaseMouse
CM Quick Fire Rapid EVGA Supernova G2 850W Silverstone FT-02W CM Spawn 
AudioAudioAudio
Sony TA-AX380 Sennheiser HD 280 KLH 911B 
CPUMotherboardGraphicsRAM
i3-2125 GA-H61N USB3 HD3000 8GB Samsung Miracle RAM 
Hard DriveHard DriveHard DriveCooling
Kingston 60GB 3ware/LSI 9750-4i Hitachi 5k3000 2TB x4 RAID 5 Intel for now 
OSPowerCase
OS X 10.8.2 Corsiar CX430M Fractal Design Node 304 
CPUMotherboardGraphicsRAM
i3-2100 ASUS P8H67-M PRO/CSM ASUS Passive GT 440 4GB Dominator 1600 c8 
Hard DriveOptical DriveCoolingCooling
Hitachi 120GB 2.5" LG BR-RW CM GeminII S + NF-P12 2x NF-R8 - Intake 
CoolingOSMonitorKeyboard
NF-B9 Windows 7 Sony KDL-46NX700 MK700 
PowerCaseMouseAudio
Antec EA-650 Zalman HD160XT, Modded MK700 Yamaha RX-V373 
  hide details  
Reply
finally quiet
(20 items)
 
Peggy
(11 items)
 
Betty - WIP
(17 items)
 
CPUMotherboardGraphicsRAM
i5-760 3.8 + turbo MSI P55-GD80 MSI GTX 970 Golden Edition 16GB Tactical LP 1600 c8 
Hard DriveHard DriveHard DriveCooling
Samsung 840 Pro 128GB OCZ Agility 60GB Spinpoint F3 1TB Noctua NH-U12P SE2 
CoolingOSMonitorMonitor
2x NF-P12, CPU OS X 10.10, 8.1 Ultimate Asus VW246H Ergotron Neo-Flex 
KeyboardPowerCaseMouse
CM Quick Fire Rapid EVGA Supernova G2 850W Silverstone FT-02W CM Spawn 
AudioAudioAudio
Sony TA-AX380 Sennheiser HD 280 KLH 911B 
CPUMotherboardGraphicsRAM
i3-2125 GA-H61N USB3 HD3000 8GB Samsung Miracle RAM 
Hard DriveHard DriveHard DriveCooling
Kingston 60GB 3ware/LSI 9750-4i Hitachi 5k3000 2TB x4 RAID 5 Intel for now 
OSPowerCase
OS X 10.8.2 Corsiar CX430M Fractal Design Node 304 
CPUMotherboardGraphicsRAM
i3-2100 ASUS P8H67-M PRO/CSM ASUS Passive GT 440 4GB Dominator 1600 c8 
Hard DriveOptical DriveCoolingCooling
Hitachi 120GB 2.5" LG BR-RW CM GeminII S + NF-P12 2x NF-R8 - Intake 
CoolingOSMonitorKeyboard
NF-B9 Windows 7 Sony KDL-46NX700 MK700 
PowerCaseMouseAudio
Antec EA-650 Zalman HD160XT, Modded MK700 Yamaha RX-V373 
  hide details  
Reply
post #247 of 465
v=ir is ohms law easiest to google for yourself!
USS CLM8-1701
(39 items)
 
Her Venom
(21 items)
 
Lil Tough Guy
(15 items)
 
CPUMotherboardGraphicsGraphics
AMD FX-8350 Gigabyte 990FXA-UD7 R7970-2PMD3GD5/OC  R7970-2PMD3GD5/OC  
GraphicsGraphicsRAMHard Drive
R7970-2PMD3GD5/OC  R7970-2PMD3GD5/OC  F3-2400C10D-16GTX  OCZ Agility 3 120GB  
Hard DriveHard DriveHard DriveOptical Drive
OCZ Agility 3 120GB  Seagate Barracuda 1TB  Segate Barracuda 3TB Rosewill RCR-IM5001 USB2.0 75 in 1 internal Car... 
Optical DriveCoolingCoolingCooling
Pioneer BDR-208DBK Blu-ray Writer Swiftech H20-220 EDGE HD Liquid Cooling Kit Swiftech Komodo 7970 Swiftech MCP-35X2 
CoolingCoolingCoolingCooling
Swiftech MCP35X2 Heat Sink Swiftech MCP35X Reservoir Swiftech Komodo 7970 Swiftech Komodo 7970 
CoolingCoolingCoolingCooling
Alphacool 240mm XT45 Alphacool 120mm XT45 Alphacool 120mm UT60 FrozenQ PC Mods UV Meteor Light Limited Edition... 
CoolingCoolingOSOS
Koolance Radiator Mounting Bracket with Quick-R... Swiftech Komodo 7970 Windows 7 Windows 8  
MonitorMonitorMonitorMonitor
ASUS VG248QE Black 24" 144Hz 1ms  ASUS VG248QE Black 24" 144Hz 1ms  ASUS VG248QE Black 24" 144Hz 1ms  XFX FXTRISTAND Triple Display Monitor Stand  
KeyboardPowerCaseMouse
Logitech G510 XFX pro 1250w black edition Caselabs MAGNUM M8 Case Razer Naga 
AudioAudioOther
Sony 2.1 Razer Megalodon XFX pro 1250w black edition 
CPUMotherboardGraphicsGraphics
8350 batch 1229 pgn  Asus Crosshair V Formula-Z gigabyte 7770 OC gigabyte 7770 OC 
RAMHard DriveHard DriveHard Drive
F3-2400C10D-16GTX OCZ agaility 3 120  OCZ Agility 3 120gb  Seagate 7200rpm 1tb 
Optical DriveOptical DriveCoolingCooling
Pioneer BDR-208DBK Rosewill RCR-IM5001 USB2.0 75 in 1 internal Car... Swiftech MCP-35X White Top Swiftech Quiet Power 240  
CoolingOSOSMonitor
Swiftech Apogee HD Windows 7 Windows 8 LG E2242 
MonitorKeyboardPowerCase
LG E2242 RAZER Black Lycosa Mirror Special Edition Seasonic x660 Cooler Master Storm Stryker 
Mouse
Razer Lachesis 
CPUMotherboardGraphicsRAM
FX 6100 Sabertooth 990fx R2.0 XFX 7770 Core Edition Samsung 1600 2x4 
RAMHard DriveOptical DriveCooling
Samsung 1600 2x4 Unknown as of now  Piorneer BDR-208DBK Swiftech H220  
OSMonitorKeyboardPower
Windows 8  Samsung 60" 120hz 3d LED TV Unknown Seasonic x750 
CaseMouseAudio
Cooler Master Storm Stryker Unknown Pioneer 5.1 
  hide details  
Reply
USS CLM8-1701
(39 items)
 
Her Venom
(21 items)
 
Lil Tough Guy
(15 items)
 
CPUMotherboardGraphicsGraphics
AMD FX-8350 Gigabyte 990FXA-UD7 R7970-2PMD3GD5/OC  R7970-2PMD3GD5/OC  
GraphicsGraphicsRAMHard Drive
R7970-2PMD3GD5/OC  R7970-2PMD3GD5/OC  F3-2400C10D-16GTX  OCZ Agility 3 120GB  
Hard DriveHard DriveHard DriveOptical Drive
OCZ Agility 3 120GB  Seagate Barracuda 1TB  Segate Barracuda 3TB Rosewill RCR-IM5001 USB2.0 75 in 1 internal Car... 
Optical DriveCoolingCoolingCooling
Pioneer BDR-208DBK Blu-ray Writer Swiftech H20-220 EDGE HD Liquid Cooling Kit Swiftech Komodo 7970 Swiftech MCP-35X2 
CoolingCoolingCoolingCooling
Swiftech MCP35X2 Heat Sink Swiftech MCP35X Reservoir Swiftech Komodo 7970 Swiftech Komodo 7970 
CoolingCoolingCoolingCooling
Alphacool 240mm XT45 Alphacool 120mm XT45 Alphacool 120mm UT60 FrozenQ PC Mods UV Meteor Light Limited Edition... 
CoolingCoolingOSOS
Koolance Radiator Mounting Bracket with Quick-R... Swiftech Komodo 7970 Windows 7 Windows 8  
MonitorMonitorMonitorMonitor
ASUS VG248QE Black 24" 144Hz 1ms  ASUS VG248QE Black 24" 144Hz 1ms  ASUS VG248QE Black 24" 144Hz 1ms  XFX FXTRISTAND Triple Display Monitor Stand  
KeyboardPowerCaseMouse
Logitech G510 XFX pro 1250w black edition Caselabs MAGNUM M8 Case Razer Naga 
AudioAudioOther
Sony 2.1 Razer Megalodon XFX pro 1250w black edition 
CPUMotherboardGraphicsGraphics
8350 batch 1229 pgn  Asus Crosshair V Formula-Z gigabyte 7770 OC gigabyte 7770 OC 
RAMHard DriveHard DriveHard Drive
F3-2400C10D-16GTX OCZ agaility 3 120  OCZ Agility 3 120gb  Seagate 7200rpm 1tb 
Optical DriveOptical DriveCoolingCooling
Pioneer BDR-208DBK Rosewill RCR-IM5001 USB2.0 75 in 1 internal Car... Swiftech MCP-35X White Top Swiftech Quiet Power 240  
CoolingOSOSMonitor
Swiftech Apogee HD Windows 7 Windows 8 LG E2242 
MonitorKeyboardPowerCase
LG E2242 RAZER Black Lycosa Mirror Special Edition Seasonic x660 Cooler Master Storm Stryker 
Mouse
Razer Lachesis 
CPUMotherboardGraphicsRAM
FX 6100 Sabertooth 990fx R2.0 XFX 7770 Core Edition Samsung 1600 2x4 
RAMHard DriveOptical DriveCooling
Samsung 1600 2x4 Unknown as of now  Piorneer BDR-208DBK Swiftech H220  
OSMonitorKeyboardPower
Windows 8  Samsung 60" 120hz 3d LED TV Unknown Seasonic x750 
CaseMouseAudio
Cooler Master Storm Stryker Unknown Pioneer 5.1 
  hide details  
Reply
post #248 of 465
Yeah but it's not like the load is actually resistive. Ohm's Law only actually holds for devices with linear I-V curves, which are far from everything.

In fact, the DC brushless motor used for these fans takes the input DC voltage and uses an inverter to get alternating current. After all, pumping DC current wouldn't generate a magnetic field, and you need the changing interaction with the stationary magnets to generate the movement.

If you measure the current to different fans across a range of input voltages (or measure power), you see different relationships. You can see this in some fan reviews.
post #249 of 465
Quote:
Originally Posted by claes View Post

Just curious what "ir" stands for here smile.gif
This all makes sense to me, but this part doesn't:
Wouldn't they perform differently given that the TY-147 A would be running a little slower? Or is this the difference you're highlighting (same rpm with same v, different rpm at same pwm output - i.e. lower starting voltage with the A)?

Are any of these reasons not to test USB controlled pumps in their various settings rather than by voltage?
When using PWM there is no voltage change. Motor receives 12v power in pulses The 4-pin header has 12v constant power on pin-2 and PWM signal on pin-4

When motor is run on variable voltage pin-2 changes voltage and their is no PWM signal on pin-4 Most PWM fans can be run on varialbe voltage just like 3-pin fans

The TY-147 and TY-147A are same motor and fan. Only difference is the PWM signal to 12v pulse curve is different. This means TY-147A will run slower than TY-147 as the graph shows.

But running on 7v power in 3-pin variable voltge mode they will both run the same speed because they are receiving the same 7v power to their identical motors. The PWM circuit is doing nothing because there is no PWM in use.

Or are you talking about usign PWM mode with 7v on pin-2 instread of 12v? If pin-2 was 7v instead of 12v on PWM.the fans would likely not even run. I do know that most PWM fans will run at lower speed curve with lower voltage on pin-2 (like 10v or 11v), but that is not what you are asking.
post #250 of 465
Quote:
Originally Posted by ciarlatano View Post

Two things.....have you seen the video posted earlier in the thread where they literally throw a build around with an air cooler? Even on a Biostar MB nothing happened. And where are you people all moving your desktops to so frequently, and having such a need to access your RAM so frequently?

I have lost a mobo to air cooler (Thermaltake Frio). Took about 6 months of carrying the PC with me daily (morning to the work, evening to the home in car trunk). An you know ... the cases with handles on them - these handles are often not just for the show biggrin.gif

So while people can ofc make videos where they throw the case with heavy air cooler down the stairs, plug it in and it boots fine it does not mean that if they do it few more times for added statistical significance that it will boot on 4th or 5th time as well. AIO's can have different issues ofc in mobile system like, for example, extreme temperatures.

In my experience either custom loop with properly tightened compression fittings or sub 400g non-tower air cooler are the best options (depending on what is important to the person) for cooling an mobile system. There are other tricks with mobile systems as well, like using a glue gun on motherboard standoffs, using locking washers on screws to minimize them unscrewing themselves with vibration, etc. I have no experience with CLC's.

Edit: Bonus pictures biggrin.gif
Custom loop:

Current (fully air cooled atm) system:

The next iteration (will be done later in the spring) will have a hybrid system. CPU and one GFX card with air and the main GPU under water. I have ended up with Sythe Big Shuriken with aftermarket fan as my main CPU cooling solution for my mobile systems for the current build. With proper airflow it can handle i7-3820 at 4.3 GHz hitting about 70..75 C or so (~21 C ambient, hot hot hot inside case).
Edited by Carniflex - 2/15/16 at 5:54am
Kohver v.4
(25 items)
 
Kohver v.3
(21 items)
 
Soliton
(23 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 X79-UP4 Gigabyte 390X G1 Club3D 7870 Eyefinity 6 
RAMHard DriveHard DriveHard Drive
64 GB Barracuda 3 TB WD Green 3 TB Crucial M4 256 GB 
Hard DriveHard DriveHard DriveCooling
Crucial M4 64 GB Barracuda 4 TB Corsair LE 480HB Sythe big shuriken rev B 
CoolingCoolingCoolingOS
Nexxos 280mm radiator DC-LT Alphacool GPX 390M04 Windows 7 Pro 64 bit 
MonitorMonitorMonitorMonitor
DELL U2311H (x3) DELL U2312HM (x2) 9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K 
KeyboardPowerCaseMouse
CM Quickfire TK (red) Corsair AX-1200i Significantly modded Jupiter .. something alumi... Logitech G700s 
Mouse Pad
3M Ergonomic 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 X79-UP4 Gigabyte 390X G1 Club3D 7870 Eyefinity 6 
RAMHard DriveHard DriveHard Drive
64 GB Barracuda 3 TB WD Green 3 TB Crucial M4 256 GB 
Hard DriveHard DriveCoolingOS
Crucial M4 64 GB Barracuda 4 TB Sythe big shuriken rev B Windows 7 Pro 64 bit 
MonitorMonitorMonitorMonitor
DELL U2311H (x3) DELL U2312HM (x2) 9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K 
KeyboardPowerCaseMouse
CM Quickfire TK (red) Corsair AX-1200i Modded Sharkoon VS-3 Logitech G700s 
Mouse Pad
3M Ergonomic 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 X79-UP4 Sapphire 7950 FleX OC XFX 6770 Eyefinity 5 
GraphicsRAMHard DriveHard Drive
Club3D 7870 Eyefinity 6 64 GB Samsung 750 GB F3 Barracuda 3 TB 
Hard DriveHard DriveHard DriveHard Drive
WD Green 3 TB Crucial M4 256 GB Crucial M4 64 GB Barracuda 4 TB 
CoolingOSMonitorMonitor
Custom loop Windows 7 Pro 64 bit DELL U2311H (x3) DELL U2312HM (x2) 
MonitorMonitorKeyboardPower
9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K CM Quickfire TK (red) Corsair AX-1200i 
CaseMouseMouse Pad
Modded Chieftec Smart WH-02B-B-OB Logitech G700s 3M Ergonomic 
  hide details  
Reply
Kohver v.4
(25 items)
 
Kohver v.3
(21 items)
 
Soliton
(23 items)
 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 X79-UP4 Gigabyte 390X G1 Club3D 7870 Eyefinity 6 
RAMHard DriveHard DriveHard Drive
64 GB Barracuda 3 TB WD Green 3 TB Crucial M4 256 GB 
Hard DriveHard DriveHard DriveCooling
Crucial M4 64 GB Barracuda 4 TB Corsair LE 480HB Sythe big shuriken rev B 
CoolingCoolingCoolingOS
Nexxos 280mm radiator DC-LT Alphacool GPX 390M04 Windows 7 Pro 64 bit 
MonitorMonitorMonitorMonitor
DELL U2311H (x3) DELL U2312HM (x2) 9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K 
KeyboardPowerCaseMouse
CM Quickfire TK (red) Corsair AX-1200i Significantly modded Jupiter .. something alumi... Logitech G700s 
Mouse Pad
3M Ergonomic 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 X79-UP4 Gigabyte 390X G1 Club3D 7870 Eyefinity 6 
RAMHard DriveHard DriveHard Drive
64 GB Barracuda 3 TB WD Green 3 TB Crucial M4 256 GB 
Hard DriveHard DriveCoolingOS
Crucial M4 64 GB Barracuda 4 TB Sythe big shuriken rev B Windows 7 Pro 64 bit 
MonitorMonitorMonitorMonitor
DELL U2311H (x3) DELL U2312HM (x2) 9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K 
KeyboardPowerCaseMouse
CM Quickfire TK (red) Corsair AX-1200i Modded Sharkoon VS-3 Logitech G700s 
Mouse Pad
3M Ergonomic 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 X79-UP4 Sapphire 7950 FleX OC XFX 6770 Eyefinity 5 
GraphicsRAMHard DriveHard Drive
Club3D 7870 Eyefinity 6 64 GB Samsung 750 GB F3 Barracuda 3 TB 
Hard DriveHard DriveHard DriveHard Drive
WD Green 3 TB Crucial M4 256 GB Crucial M4 64 GB Barracuda 4 TB 
CoolingOSMonitorMonitor
Custom loop Windows 7 Pro 64 bit DELL U2311H (x3) DELL U2312HM (x2) 
MonitorMonitorKeyboardPower
9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K CM Quickfire TK (red) Corsair AX-1200i 
CaseMouseMouse Pad
Modded Chieftec Smart WH-02B-B-OB Logitech G700s 3M Ergonomic 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Why you should probably not buy a CLC cooler