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Malfunctioning DRAM voltage sensor ?

post #1 of 22
Thread Starter 
Hi guys, I have a question about some odd readings showing up in various programs I use (HWinfo, aida64, etc..)

Okay, so I have a new build - a MSI H81I Mini itx board, Pentium G3220, and 2GB DDR3.

When I try to look at the voltages present in whatever program Im using, they show a ridiculous voltage for the DRAM (2.160 - 2.175 volts). The funny thing is, I didn't overvolt - these are stock "auto" settings in bios.

When I changed the voltage to 1.5v in BIOS, the result is the same as setting "Auto". Since the bios included with this board lacks a realtime voltage readout, I have to use a windows based program to see it - here's some screenshots from HWinfo and Aida 64:





Okay, so I did memtest86 for about 1.5 hours. No errors.
Swapped out the memory for 4GB 1600mhz 1.5v DDR3. Same result - the board shows the voltage at 2.160 volts normally, despite setting it to 1.5 volts.
Ran memtest86 again for bout 2 hours with the 4GB stick. No errors.
this time, checked how warm the memory stick was, and it was barely 45c. barely warm to the touch.

I've also noticed the CPU core voltage does not get read properly in most of the programs. Aida shows 1.7v for the "CPU VRM" , and 0.16 volts for the core itself. However, MSI's command center utility shows a different value - under "CPU VID" which usually shows up to be around 0.8 - 1v, depending on the CPU state.

Im running Windows 7.

Can anyone tell me what's going on here ?? Is the board actually running that amount of voltage through the memory, or is it that the sensors are crappy, and aren't reporting the voltages correctly ?

blinksmiley.gif
post #2 of 22

Wow. If MSI has its own monitoring software, then I recommend trying that too. This certainly is a stumper.

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post #3 of 22
Thread Starter 
Here's a screenshot of MSI's Command Center and MSI's HWMonitor / Intel Extreme Tuning Utility.



What's funny about this is the BIOS / MSI-CC / MSI-IETU completely lack a realtime readout of DRAM voltage, they only have readouts of what the setting is at.

... Is MSI trying to hide a faulty sensor ?? mad.gif
post #4 of 22
Quote:
Originally Posted by Mildaine View Post

Here's a screenshot of MSI's Command Center and MSI's HWMonitor / Intel Extreme Tuning Utility.



What's funny about this is the BIOS / MSI-CC / MSI-IETU completely lack a realtime readout of DRAM voltage, they only have readouts of what the setting is at.

... Is MSI trying to hide a faulty sensor ?? mad.gif

 

Hmm... that's a good question. lol :)

It's a computer!
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CPUMotherboardGraphicsRAM
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post #5 of 22
2.160V is even above the absolute maximum allowed by all the chip makers, which is 1.975V or less.

I think you'll have to take a direct measurement with a digital voltage meter, either at the chip that feeds power to the DIMM sockets (I'm guessing it's that square thing with 4 pins on one side, near the PCI-E socket) or the DIMM sockets themselves. You don't want to poke the meter into the slot but instead into the several square holes next to it, each which allows access to one of the DIMM pins. You want the pins for Vdd (51, 60, 65, 66, 75, 173, 176, 179, 182, 189, 191, 194, 197). To take measurements, power up the computer with the hard disks disconnected and the DIMMs removed.

post #6 of 22
Thread Starter 
Okay, I think I can do that - ill see what more info I can find on this.
post #7 of 22

Or, you can do this: run Prime95' Custom Blend test telling it to use about 85% of your installed memory. Then, while that's running, feel the temperature of your memory by just touching it. If it's so hot that your skin would burn, then yeah, your voltage is way too high. However, if it's hot but not so hot that you'd burn yourself, then you're safe.

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(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #8 of 22
Quote:
Originally Posted by TwoCables View Post

Or, you can do this: run Prime95' Custom Blend test telling it to use about 85% of your installed memory. Then, while that's running, feel the temperature of your memory by just touching it. If it's so hot that your skin would burn, then yeah, your voltage is way too high. However, if it's hot but not so hot that you'd burn yourself, then you're safe.

lol....
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post #9 of 22
Quote:
Originally Posted by PCSarge View Post


lol....

 

What's funny?

It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #10 of 22
You didn't try HWINFO according to your screenshots. On my board, it can show a bunch of stuff that I've not seen in any other tool: http://www.hwinfo.com/download.php

(I saw HWMonitor, Aida, Intel's tool, MSI's tool in your screenshots.)
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