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Am I risking blowing up my mobo?

post #1 of 4
Thread Starter 
I read a few things about people's motherboards blowing up because of un-heatsinked VRMs, and I looked at mine and I don't think it has heatsinks, I don't really know what I'm supposed to be looking for though.

Specs are in sig,
here's a picture of my mobo. The things I circled...squared?.. in red, are those the things that should be heatsinked? Also if anyone wants to give me a lesson on what all the little things on a mobo are called and what they do, that would be cool.



And here's a link to a review of it for more information: http://www.motherboards.org/reviews/...ds/1793_3.html


I have my Athlon II oc'd from 2.7 stock to 3.1, and it is on full load or nearly full load almost 24/7. It's TDP is 95-Watts btw.

Am I fine or should I back off on my overclock a little?
My rig
(17 items)
 
   
CPUMotherboardGraphicsRAM
AMD Turion TL-60 x2 2Ghz Acer Aspire 5517 Radeon HD 3200 4GB DDR2 800 Mhz 
Hard DriveOS
64GB Kingston SSD Windows 7 
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My rig
(17 items)
 
   
CPUMotherboardGraphicsRAM
AMD Turion TL-60 x2 2Ghz Acer Aspire 5517 Radeon HD 3200 4GB DDR2 800 Mhz 
Hard DriveOS
64GB Kingston SSD Windows 7 
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post #2 of 4
I got some free time, so ill explain for you, what you circled in red are called MOSFETs they are basically electronic transistors which are switches. When power is applied they pass current, but in our case two FETs(short for MOSFET)(two FETs, one for high side and one low side) convert 12v to whatever your vcore is, and a third switches them on and off.

The basic idea is that motherboards use SMPS(switch mode power supply) which means that each phase is switched on for a small moment, about 300000 times per second(called the switching frequency aka, the amount of time per second each phase is in the on state), and every phase is switched on right after the one right before it. So each phase turns on for a set amount of time, outputs a certain a mount of current and when that limit is reached it is turned off, and the next phase turns on. more phases = less stress b?c each phase is outputting less current.

Now the voltage inputted to the FETs comes from the capacitors i circled in orange. These are input capacitors, and they basically smoothe out the 12v rail from your PSU, they also store power. They are needed becuase your CPu will be in differnet load states every second,a nd the FETs need a constant supply. The input capacitors are probably one of the most important capacitors on your board, as they are under as much stress as the output capacitors.

The current/ power from the FETs output goes into the inductors/chokes, i circled in blue. they store energy as well as reduce the affects of the switching of the power supply, they work to filter out the switching frequency is is about 300000 times per second down to 60000 times per second, a frequency that the CPU can handle. Each inductor is connected to the output of each pair of FETs(each phase), but then all the inductors are connected together on their output.

In pink are the output capacitors, apart from some ceramic MLC caps, they are the final stage before your CPU. When the CPu wants power, the output caps feed the power, and when the output caps need power they get it from the inductors. So while the capacitors discharge the inductors charge so that they can discharge to the caps when needed. Together the inductors and output capacitor bank create a low pass filter, which reduces the frequency of the switching, as well as smooth out the AC portion of the DC output voltage, which is more commonly known as ripple.

There is also one other component, the most important one, the PWM chip. This chip controls the switching frequency, the load balancing, current monitoring per phase, as well as the duty cycle(how output voltage is changed), and offset per phase. This PWM IC also controls LLC, droop, and basically everything to do with voltage regulation.

There you go, enjoy.

touch the FETs if they get hot then put some heatinks on them, check newegg, they got good copper ones for like 13 bucks for 10.
X99 Main Rig
(10 items)
 
  
CPUMotherboardGraphicsRAM
Intel 5960X Extreme Edition @ 4.5GHz Always Changing VisonTek R9 290 G.Skill Ripjaws 4 16GB (4x4GB) DDR4 @ 3200MHz 
Hard DriveHard DriveHard DriveCooling
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X99 Main Rig
(10 items)
 
  
CPUMotherboardGraphicsRAM
Intel 5960X Extreme Edition @ 4.5GHz Always Changing VisonTek R9 290 G.Skill Ripjaws 4 16GB (4x4GB) DDR4 @ 3200MHz 
Hard DriveHard DriveHard DriveCooling
Samsung 128GB M.2 PCI-E 4x SSD Apotop 256GB SSD 1.82TB NAS Noctua NH-D15 with both fans 
OSPower
Win7 Pro Enermax 1000W 
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post #3 of 4
Thread Starter 
Wow, thank you for taking the time to explain all of that, it will help me a lot, plus I just like to know how things work.
I'm gonna order some of these: http://www.newegg.com/Product/Produc...82E16835708012
When I get some money in like a week or 2. Should I reduce my overclock a little bit til then? It's been Oc'd for about a month already. Eh, I think I'll just lower because now that I know this, if something did happen to it I would kick myself for not doing anything about it.
My rig
(17 items)
 
   
CPUMotherboardGraphicsRAM
AMD Turion TL-60 x2 2Ghz Acer Aspire 5517 Radeon HD 3200 4GB DDR2 800 Mhz 
Hard DriveOS
64GB Kingston SSD Windows 7 
  hide details  
Reply
My rig
(17 items)
 
   
CPUMotherboardGraphicsRAM
AMD Turion TL-60 x2 2Ghz Acer Aspire 5517 Radeon HD 3200 4GB DDR2 800 Mhz 
Hard DriveOS
64GB Kingston SSD Windows 7 
  hide details  
Reply
post #4 of 4
i think they should be ok, but its always a good idea to cool things down, that way they last longer.

if you want to learn more read on of the reviews in my sig, try X58A-OC part 1, its very much about motherboard VRMs.
X99 Main Rig
(10 items)
 
  
CPUMotherboardGraphicsRAM
Intel 5960X Extreme Edition @ 4.5GHz Always Changing VisonTek R9 290 G.Skill Ripjaws 4 16GB (4x4GB) DDR4 @ 3200MHz 
Hard DriveHard DriveHard DriveCooling
Samsung 128GB M.2 PCI-E 4x SSD Apotop 256GB SSD 1.82TB NAS Noctua NH-D15 with both fans 
OSPower
Win7 Pro Enermax 1000W 
  hide details  
Reply
X99 Main Rig
(10 items)
 
  
CPUMotherboardGraphicsRAM
Intel 5960X Extreme Edition @ 4.5GHz Always Changing VisonTek R9 290 G.Skill Ripjaws 4 16GB (4x4GB) DDR4 @ 3200MHz 
Hard DriveHard DriveHard DriveCooling
Samsung 128GB M.2 PCI-E 4x SSD Apotop 256GB SSD 1.82TB NAS Noctua NH-D15 with both fans 
OSPower
Win7 Pro Enermax 1000W 
  hide details  
Reply
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