Overclock.net › Forums › Cooling › Other Cooling Discussions › Is that overload ?
New Posts  All Forums:Forum Nav:

Is that overload ?

post #1 of 5
Thread Starter 
Hey OCN ..

I made a custom cooling mod for my sig laptop ..



As you can see , This is three fans powered with 2 usb cables ..

So here is the dilemma :

Quote:
Originally Posted by CyberDruid View Post
Just thought I should mention that the USB standard states no more than 500 milliamp draw per port. Anything more and you might be overloading the traces or other components.
Could you please explain ?!

Gaming Laptop
(8 items)
 
HTC One M8
(7 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-4720HQ 2.6GHz-3.6GHz Lenovo Y50-70 NVIDIA GeForce GTX 960M 4GB GDDR5 16GB DDR3 1600MHz 
Hard DriveOSMonitorKeyboard
1TB-8GB SSD Hybrid Hard Drive Windows 8.1 x64 15.6" 1920x1080 Backlit Keyboard 
CPUGraphicsRAMHard Drive
Quad-core 2.3 GHz Snapdragon 801 Adreno 330 2GB 16GB 
OSMonitorPower
Android 4.4.3 Super LCD3 5.0 1080x1920 2600mAh 
  hide details  
Reply
Gaming Laptop
(8 items)
 
HTC One M8
(7 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-4720HQ 2.6GHz-3.6GHz Lenovo Y50-70 NVIDIA GeForce GTX 960M 4GB GDDR5 16GB DDR3 1600MHz 
Hard DriveOSMonitorKeyboard
1TB-8GB SSD Hybrid Hard Drive Windows 8.1 x64 15.6" 1920x1080 Backlit Keyboard 
CPUGraphicsRAMHard Drive
Quad-core 2.3 GHz Snapdragon 801 Adreno 330 2GB 16GB 
OSMonitorPower
Android 4.4.3 Super LCD3 5.0 1080x1920 2600mAh 
  hide details  
Reply
post #2 of 5
Quote:
Originally Posted by MPIXAPP View Post
Hey OCN ..

I made a custom cooling mod for my sig laptop ..

As you can see , This is three fans powered with 2 usb cables ..

So here is the dilemma :



Could you please explain ?!

500mA = 0.5A

So it depends the three fans rating say 0.5A each, it pulls 1.5A = 1500mA from the USB which is capable of 500mA.

Not a very good example, it's like with a 500w PSU but you draw 800w from it will either trip or damage the PSU.
ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
  hide details  
Reply
ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
  hide details  
Reply
post #3 of 5
Thread Starter 
But I know that USB is limited by 5V , and the fans are 12V , so is there anything wrong ?!
Gaming Laptop
(8 items)
 
HTC One M8
(7 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-4720HQ 2.6GHz-3.6GHz Lenovo Y50-70 NVIDIA GeForce GTX 960M 4GB GDDR5 16GB DDR3 1600MHz 
Hard DriveOSMonitorKeyboard
1TB-8GB SSD Hybrid Hard Drive Windows 8.1 x64 15.6" 1920x1080 Backlit Keyboard 
CPUGraphicsRAMHard Drive
Quad-core 2.3 GHz Snapdragon 801 Adreno 330 2GB 16GB 
OSMonitorPower
Android 4.4.3 Super LCD3 5.0 1080x1920 2600mAh 
  hide details  
Reply
Gaming Laptop
(8 items)
 
HTC One M8
(7 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-4720HQ 2.6GHz-3.6GHz Lenovo Y50-70 NVIDIA GeForce GTX 960M 4GB GDDR5 16GB DDR3 1600MHz 
Hard DriveOSMonitorKeyboard
1TB-8GB SSD Hybrid Hard Drive Windows 8.1 x64 15.6" 1920x1080 Backlit Keyboard 
CPUGraphicsRAMHard Drive
Quad-core 2.3 GHz Snapdragon 801 Adreno 330 2GB 16GB 
OSMonitorPower
Android 4.4.3 Super LCD3 5.0 1080x1920 2600mAh 
  hide details  
Reply
post #4 of 5
Quote:
Originally Posted by MPIXAPP View Post
But I know that USB is limited by 5V , and the fans are 12V , so is there anything wrong ?!
500mA x 5v = 2.5 watt.

If the 3 fan total power draw is not exceeding 2.5 watt then there's nothing wrong.




...
Edited by Ken1649 - 11/5/11 at 12:52pm
ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
  hide details  
Reply
ケンジ
(16 items)
 
  
CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
  hide details  
Reply
post #5 of 5
Thread Starter 
Thank you , +Rep
Gaming Laptop
(8 items)
 
HTC One M8
(7 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-4720HQ 2.6GHz-3.6GHz Lenovo Y50-70 NVIDIA GeForce GTX 960M 4GB GDDR5 16GB DDR3 1600MHz 
Hard DriveOSMonitorKeyboard
1TB-8GB SSD Hybrid Hard Drive Windows 8.1 x64 15.6" 1920x1080 Backlit Keyboard 
CPUGraphicsRAMHard Drive
Quad-core 2.3 GHz Snapdragon 801 Adreno 330 2GB 16GB 
OSMonitorPower
Android 4.4.3 Super LCD3 5.0 1080x1920 2600mAh 
  hide details  
Reply
Gaming Laptop
(8 items)
 
HTC One M8
(7 items)
 
 
CPUMotherboardGraphicsRAM
Intel Core i7-4720HQ 2.6GHz-3.6GHz Lenovo Y50-70 NVIDIA GeForce GTX 960M 4GB GDDR5 16GB DDR3 1600MHz 
Hard DriveOSMonitorKeyboard
1TB-8GB SSD Hybrid Hard Drive Windows 8.1 x64 15.6" 1920x1080 Backlit Keyboard 
CPUGraphicsRAMHard Drive
Quad-core 2.3 GHz Snapdragon 801 Adreno 330 2GB 16GB 
OSMonitorPower
Android 4.4.3 Super LCD3 5.0 1080x1920 2600mAh 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Other Cooling Discussions
Overclock.net › Forums › Cooling › Other Cooling Discussions › Is that overload ?