Overclock.net › Forums › AMD › AMD CPUs › About VRMs & Mosfets / Motherboard Safety with 125W+ TDP processors
New Posts  All Forums:Forum Nav:

About VRMs & Mosfets / Motherboard Safety with 125W+ TDP processors - Page 93

post #921 of 1100
Quote:
Originally Posted by wilykat;15415002 
No. VRM regulate voltage and current. Under powered VRM can fry itselves with overpowered CPU or from extreme overclocking.

Chipset is what handle communication between CPU and peripherals like USB and SATA on board.

OH! so you mean like if i set my cpu voltage to 2volts, ok btw is 1.5v bad for an AMD phenom 965 with that i could reach 4Ghz.
annihilator
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 965 @ 4Ghz Asus M5A97 990FX Pny Geforce Gts 450 1024MB 128-bit Kingston Hyperx 4GB 
Hard DriveOptical DriveOSMonitor
Kingston Hyperx SSD 250GB LG Black 10X Blu-ray Burner Windows 7 64Bit Acer G24, 24" 1920x1200 
KeyboardPowerCaseMouse
Razer Blackwidow Ultimate Cooler Master TX 650 Watt Cooler Master Haf 912 Razer Diamond Back 
Mouse Pad
Razer eXactMat 
  hide details  
Reply
annihilator
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II 965 @ 4Ghz Asus M5A97 990FX Pny Geforce Gts 450 1024MB 128-bit Kingston Hyperx 4GB 
Hard DriveOptical DriveOSMonitor
Kingston Hyperx SSD 250GB LG Black 10X Blu-ray Burner Windows 7 64Bit Acer G24, 24" 1920x1200 
KeyboardPowerCaseMouse
Razer Blackwidow Ultimate Cooler Master TX 650 Watt Cooler Master Haf 912 Razer Diamond Back 
Mouse Pad
Razer eXactMat 
  hide details  
Reply

Gear mentioned in this thread:

post #922 of 1100
Quote:
Originally Posted by wilykat;15415002 
No. VRM regulate voltage and current. Under powered VRM can fry itselves with overpowered CPU or from extreme overclocking.

Just to give this quote an idea of what can happen. This is my MSI K9A2-CFF version 1 motherboard. I blew the mosfets overclocking an older brisbane 5400+.
post #923 of 1100
Thread Starter 
^ The K9A2-CF was, unlike the other MSI K9A2 boards (particularly the Platinum), known for failure, probably due to the different brand MOSFETs as observed by another user.
post #924 of 1100
Is there a way to fix these VRM failures? Im running stock on an 890FXA-GD70 for the past 11 months but i don't want it to fail on me frown.gif
Epic Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T 890FXA-GD70 (MS-7640) Radeon HD 5670 G. Skill 
RAMHard DriveHard DriveOptical Drive
G. Skill WD Green Seagate Samsung Blu Ray reader 
Monitor
i inc 28 inch monitor 
  hide details  
Reply
Epic Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T 890FXA-GD70 (MS-7640) Radeon HD 5670 G. Skill 
RAMHard DriveHard DriveOptical Drive
G. Skill WD Green Seagate Samsung Blu Ray reader 
Monitor
i inc 28 inch monitor 
  hide details  
Reply
post #925 of 1100
Quote:
Originally Posted by Thedark1337;15538082 
Is there a way to fix these VRM failures? Im running stock on an 890FXA-GD70 for the past 11 months but i don't want it to fail on me frown.gif

If your board hasn't blown up, it may be possible to replace the stock VRM with beefier chips that can handle more current. Also good heat sink and good fan on it if you're going to use water cooling.

If it has already blown, it's hard to fix them as the traces on the PCB could be damaged and mobo often have multi-layered traces. You'd need access to schematic to properly fix it.

A better solution is to be sure you buy quality mobo. And to refrain from overclocking on cheaper mobo and make sure CPU is not too OP. For example, a 95w AMD mobo will blow up if you used 125W CPU.
    
CPUMotherboardGraphicsRAM
i7 2700k Asus P8P67 Deluxe GTX 580 DCII Corsair Vengeance 
Hard DriveHard DriveHard DriveHard Drive
Corsair Force GT Intel X25V Hitachi HDS722020ALA330 Seagate ST30001DM001 
Hard DriveHard DriveHard DriveOptical Drive
Seagate ST31000528AS Seagate ST30001DM001 Intel X25V Pioneer BDR-209DBK 
CoolingOSMonitorMonitor
Thermalright Venomous X Windows 7 premium 64 bits Soyo Topaz S MT-GW-PRLM24D6 Acer E21H 
KeyboardPowerCaseMouse
Logitech G510 OCZ Z series 1000w Mountain Mods UFO case Logitech G5 
Mouse PadOther
any cheap pad with cute kitty picture Kingwin KB4000 4-in-3 swap bay 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7 2700k Asus P8P67 Deluxe GTX 580 DCII Corsair Vengeance 
Hard DriveHard DriveHard DriveHard Drive
Corsair Force GT Intel X25V Hitachi HDS722020ALA330 Seagate ST30001DM001 
Hard DriveHard DriveHard DriveOptical Drive
Seagate ST31000528AS Seagate ST30001DM001 Intel X25V Pioneer BDR-209DBK 
CoolingOSMonitorMonitor
Thermalright Venomous X Windows 7 premium 64 bits Soyo Topaz S MT-GW-PRLM24D6 Acer E21H 
KeyboardPowerCaseMouse
Logitech G510 OCZ Z series 1000w Mountain Mods UFO case Logitech G5 
Mouse PadOther
any cheap pad with cute kitty picture Kingwin KB4000 4-in-3 swap bay 
  hide details  
Reply
post #926 of 1100
i have no good soldering skills, but i do know that i have a lot of fans. one side fan, 2 exhaust fans, 2 intake fans, psu fan, and 2 heatsink fans. I think thats plenty for the vrms? If it is, would it be possible to OC my CPU without frying it? Or do i have to wait and buy a better board
Epic Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T 890FXA-GD70 (MS-7640) Radeon HD 5670 G. Skill 
RAMHard DriveHard DriveOptical Drive
G. Skill WD Green Seagate Samsung Blu Ray reader 
Monitor
i inc 28 inch monitor 
  hide details  
Reply
Epic Rig
(9 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X6 1090T 890FXA-GD70 (MS-7640) Radeon HD 5670 G. Skill 
RAMHard DriveHard DriveOptical Drive
G. Skill WD Green Seagate Samsung Blu Ray reader 
Monitor
i inc 28 inch monitor 
  hide details  
Reply
post #927 of 1100
Thread Starter 
Here's another 970A-G45 failure. I'm listing it down.
I think I will form a submission sheet for those who have had their VRMs fail. That way I don't have to pop in so often and can focus on life. I do intend to keep this thread under my control though.
post #928 of 1100
Hi, I'm new here at overclock.net. I'm having a problem with my Asrock 880gm-le mobo with an Athlon II X3 on it. I noticed that the first choke (not the mosfet) is very hot while the rest are on normal temps. This mobo is just a few days old, I recently replaced my J&W RS785-Fusion which I believe, had its VRM blown because when I remove the 4-pin CPU power connector, the system fans spin up. I also noticed that it's first choke is very hot but I thought its normal because the same happens with the Asrock until knowing that my friends have normal temps on all of their chokes. Everything else is new except my CPU so it is my primary suspect. Do you have any idea regarding this?

Athlon II X3 425 @ stock frequency, 1.2V
Asrock 880GM-LE
2*2GB G.Skill RipjawsX @ 1600, 8-9-8-24-34-1T, 1.59V
Geforce 9600GT 512MB DDR3 256-bit
Western Digital Caviar Black 1TB
FSP Hexa 500W

Thank you!
post #929 of 1100
Thread Starter 

regiesoriano08, I have responded to your PMs.


Also,

 

This thread has a new home in OCN's "Articles" Section!!! [CLICK HERE]

post #930 of 1100
Thread Starter 

Check THIS out.  3 880GMA-E45s in a row.  What a doozy.  This is being moved into the high fail rate category.


Check THIS out too.  MSI 970A-G45, MOSFETs failed TWO DAYS after review.  LOL.
 

And THIS.  Someone undervolted a 1055T, THEN the MOSFETs failed.


What happens when you disable all the power phases except one...


Edited by xd_1771 - 11/12/11 at 7:10pm
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs

Gear mentioned in this thread:

Overclock.net › Forums › AMD › AMD CPUs › About VRMs & Mosfets / Motherboard Safety with 125W+ TDP processors