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VRM Cooling on an Asus M4A77TD Pro

post #1 of 5
Thread Starter 
Hi all! This is my first post other than my introduction!

So, this is the reason I signed up today; I have a few questions regarding VRM cooling on the aforementioned motherboard (M4A77TD Pro).

I read the amazing article/post by xd_1771 about VRMs and learned a lot. I followed up by checking the AMD mobo VRM database you guys have helpfully compiled and saw that my motherboard doesn't have any heatsinks attached to the VRMs. I'm happy to add some myself, but I wanted be sure that I was purchasing the correct equipment and attaching them to the correct components.

Here's a picture of the CPU socket that I had taken previously and I understand that the row of black cubes at the bottom of the shot are the chokes:



Now, below the chokes I can see what I assume to be the MOSFETs: they are the black squares labelled NIKOS P75N02LDG.

So, now for my questions smile.gif

1. Am I correct in my assumptions my above about the components (black cubes being chokes, the NIKOS P75N02LDG being the MOSFETs)?

2. Should I ideally be cooling some or all of these components? I think an EnzoTech MOS-C1 will fit on top of the MOSFETs, while the EnzoTech MOS-C10 should comfortably fit on top of the chokes. What about the other chips / components there?

3. Before fitting any cooling equipment, I will probably need to clean the surfaces of the components (the board has been in service a while now); what's a good way of doing this without damaging anything?

Thanks in advance for any help or advice. smile.gif

PS - I notice that on the AMD motherboard VRM database post, the M4A77TD Pro isn't listed as having NIKOS MOSFETS. Given that the MOSFETs in the image I posted seem to be of the NIKOS variety, would it be worthwhile updating the database?

Gear mentioned in this thread:

post #2 of 5
Red are chokes.
Blue are the Mosfet.



You need Enzotech MOS-C1.
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SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
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post #3 of 5
Also it's good to get a small fan that will blow on those radiators. Amd box is perfect for this kind of use (it's 60mm if I remember correctly) if you still own box fan. It should be mounted with some plastics holders so it's easy to remove from the box cooling.
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RAMRAMRAMHard Drive
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Hard DriveHard DriveHard DriveCooling
Samsung 840 EVO 120GB[OS] WD Red 1TB Samsung 840EVO 120GB[Arma 3] Koolance 380A [modded for LGA2011v3] 
CoolingCoolingCoolingCooling
Black Water Ultimate 123 [3x Corsair AF120 Perf... MCP655 with Alphacool HF acetal top [5th gear] Feser 10/13 UV Tubing Alphacool CKC clear 
CoolingCoolingCoolingOS
Cooltek 120mm rad [antec tri-speed] Cooltek 120mm Rad [Corsair SP120 High Performan... Alphacool GPX-A 290 [290X waterblock] Windows 7 Ulitimate 64 bit  
MonitorMonitorMonitorMonitor
LG 29EA93 [2560x1080] LG L1715S [1280x1024] Samsung SMB2030N [1600x900] DIY display on V59 controller[1366x768@1440x900] 
KeyboardPowerCaseMouse
4Tech X7 G800 Cooler Master Real Power 850w Cooler Master Haf 932 Amd Edition Microsoft Mobile Mouse 4000 
AudioAudioAudioOther
Superlux hd681 FiiO E07K SoundMax Superbeam [bundled with P5B DLX] Scythe Kaze Master Pro 6 chanell 
OtherOther
2x Sharkoon 30cm red cold cathodes 2x Revoltec 10cm UV cold cathodes 
CPUMotherboardGraphicsRAM
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Hard DriveHard DriveCoolingOS
Hitachi Ultrastar 1TB Samsung 40gb[OS] Cooler Master 140mm Fan Debian 8.2.0 x64 
PowerOtherOther
Pentagram Silent Force 460W Ever Eco Pro 700 CDS [UPS] Edimax EW-7318USg [Access Point] 
CPUCPUMotherboardGraphics
Xeon E5420 Xeon E5420 HP ML350 G5 motherboard HD5450 with HD5770 cooler on passive [PCIE X4] 
RAMHard DriveHard DriveHard Drive
20GB FB-DIMM@800mhz 2x40GB WD RAID0 Sata [11year old as for 2015] 2x73GB HP 15K RPM RAID0 SAS HP 10K RPM 143GB SAS 
Hard DriveHard DriveMonitorPower
HP 10K RPM 143GB SAS HP 10K RPM 143GB SAS Fujitsu W19-1 [1440x900] Delta DPS 800W 
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post #4 of 5
Thread Starter 
Thanks for the replies. thumb.gif

So, for the blue section, do I just place MOS-C1 heatsinks over each pair of MOSFETs, ignoring the random smaller components on the board?


Any good advice for what to use for cleaning these before I place a heatsink on top?
post #5 of 5
Quote:
Originally Posted by Azrael808 View Post

Thanks for the replies. thumb.gif

So, for the blue section, do I just place MOS-C1 heatsinks over each pair of MOSFETs, ignoring the random smaller components on the board?


Any good advice for what to use for cleaning these before I place a heatsink on top?
Yes. 1 on each Mosfet. I use alcohol to clean them first then stick them on.
HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
  hide details  
Reply
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