18 of 20 people found the following review helpful
MOSFET runs too hot,
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This review is from: Asus P8Z68-V LX Motherboard (Socket 1155, DDR3, 2 x PCI Express 2.0 x16, ATX, LucidLogix Virtu) (Personal Computers)Good board for the price but the MOSFETs don't have heatsink unlike other more expensive boards from ASUS. CPUID HArdware monitor reports "CPUTIN" at 92 degrees Celcius even when the computer is idle. I just ordered a Thermalright Mosfet heatsink. I will update this thread once I have installed it.
Only 6 usb sockets at the back, no USB3 header, sound output plays on both front panel and back panel simultaneously unlike my other more expensive board. Not a full ATX board and only has six screws and not 9 for fixing to the case. Odd placement of headers and connections. MOre importantly, nmo heatsink on MOSFETS that is why they run very hot.
SO far no boot problems encountered. I'm only currently using i3 2120 chip.
edit 08 Feb 2012
Just to update this review, I have to say I made a mistake on the sound output. There is actually a setting on the Realtek software to enable/disable separate audio streams between the back and front audio ports. HD sound needs to be enabled from the bios, and the proper HD connector should also be used.
The Thermalright Mosfet (HR-09U - Type 2) heatsink has been installed and it has reduced the idle temp to 70 fluctuating to 82 degrees celcius. Not a bad result imho.
Tracked by 2 customers
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Showing 1-10 of 10 posts in this discussion
Initial post: 8 Feb 2012 10:50:58 GMT
David Glasgow says:
Posted on 12 Feb 2012 01:45:46 GMT
Both the CPUTIN & the AUXTIN readings are almost always wrong. I have a H61 chipset ASUS board and get a similar reading. Google it, there's many forums filled with people talking about it. It's a problem with the monitoring program, not the motherboard. If you had used ASUS AI Suite II, like you're supposed to, you would've found the board to be around 25c
In reply to an earlier post on 12 Feb 2012 07:42:40 GMT
Asus AI suite only reports the MOtherboard temp which is "SYSTIN" in CPUID hardware monitor. I have now used 4 ASUS boards in the span of 4 months with different size Southbridge/Northbridge chipset and with different size to no MOSFET heatsinks with diffrenet readings and compared all the temps. They all had different temps according to size of the heatsinks with the hotterst temp without heatsink, then gradually getting lower while the heatsinks get bigger. The MOSFETS were also very hot to touch especially the ones without. SO my educated guess is the temps reported by HArdware monitor are correct.
I have googled a few months ago already as you have suggested but I have not found a definite answer. Its heresay only that the temps reported are "BOGUS". If you have a link that says it is "DEFINITELY" wrong, then let us know. Otherwise the at this point in time, I assume people that say it's bogus are people who don't know what they are talking about.
Here is my observation:
SYSTIN = motherboard temp (which is also reported by ASUS AISUITE)
CPUTIN = VRM/MOSFET chipset
AUXTIN = Southbridge or Northbridge chipset (in the case of ASUS Z68 mobos, it's the chip under the big blue heatsink labelled "ASUS") the one that get's covered when you put in your GPU.
In reply to an earlier post on 12 Feb 2012 14:33:23 GMT
What case are you using? Do you have adequate ventilation? I know my readings were false as i even removed the heatsink from my Southbridge chip for a few minutes, only to find it was cooler than room temperature. Not sure what's wrong with your board but there's defiantly a fault somewhere. Why didn't you try to RMA the board? You may have found that it was just yours...
In reply to an earlier post on 12 Feb 2012 17:17:39 GMT
you mean my x4 boards are faulty? I use a coolermaster storm enforcer, the other one is a full tower thermaltake chaser mk1, the other is an NZXT sorce 2100, the otehr is a ferrari I can't remember as it is an old case. I have even tried swapping the CPUs in each board. The readings are the same. To me the cpuid hardware monitor readings are accurate. If you find anywhere on the net saying the readings are definitely not accurate or bogus, please let us know.
The board here I reviewed, is the P8Z68-V LX, and I have RMA'd one to amazon as I thought it was faulty because of the high temp readings. The replacement board gave exactly the same readings. I then kept it, bought a P8H67-M PRO R3 S/L M-ATX, this has a smaller southbridge chipset heatsink and it gave a higher AUXTIN temp reading, then it has a small MOSFET heatsink which gave a lower CPUTIN reading compared to the heatsink -less P8Z68-V LX, but higher than my main P8Z68-V gen 1 mobo which has a bigger MOSFET heatsink.
In reply to an earlier post on 12 Feb 2012 17:24:09 GMT
Hmm.. I still don't think any of the readings could be true as there'd be some sort of warning/PC shutdown. Did you actually feel the board any see if there were any spots that were particularly hot?
In reply to an earlier post on 12 Feb 2012 20:24:49 GMT
Yes as I have mentioned before, the chips were really hot to touch. Another observation i forgot to mention, on the P8Z68-V LX mobo, I am using the stock cooler, when I stress the cpu using IBT, the CPUTIN temps go down as low as 56 deg celcius. I think this is because the cpu fan spins higher and blows air towards the cpu and other surrounding bits like the mosfets giving a cooling effect.
Do you have the same mobo? WHat temps do you have?
In reply to an earlier post on 19 Feb 2012 02:09:47 GMT
Harry Martin-Taylor says:
You probably shouldn't have really be touching the the motherboard when it was on anyway. But I would expect it to get pretty hot, not having any heat sinks on the MOSFET won't help but it should matter too much anyway. What CPU coolers do you guy have, because the airflow from the coolers can dramatically change the temp of the north and south bridge chipsets in my experience. Depending on the direction of the fans on the cooler of course.)
In reply to an earlier post on 19 Feb 2012 08:47:41 GMT
I touched it trying to find where the heat was coming from, but after I have "discharged" myself from static. Your question is already answered in my earlier post.
Posted on 25 Mar 2012 02:49:27 BDT
Mr. R. Carter says:
My CPUTIN is 62oC.
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