Biostar M7VIQ SOCKET A Heat Issue

[kingmelee]

I have installed a Biostar M7VIQ SOCKET A with a XP 1700+ in a backup machine. Problem is CPU temps reach 71 degrees C.

I did notice 2 bulging and raised caps with values @ 3300mf 6.3v and ended up replacing 4 in total, and still the temp remains near 66 degrees C. There were 6 in a row next to the socket 462 ZIF.

Originals were OST I.Q 6.3v 3300mf 105c and were replaced with 3300mf 6.3v 85c.

I did leave two more that showed no sign of bulging. Should I just bite the bullet and replace those as well? Cost was $1.25 each.

(edit) I have reseated the hsf with silver paste and the fan is fine for the cpu in use. I have read reports that this motherboard mis-reports core temp by +10 degrees, but even then 56 degrees is a tad too warm for my liking. The board is running fine, my big concern is the temp. PSU is 350W and the side panel is off while I attempt to resolve this temperature issue.

[kc8adu]

Re: Biostar M7VIQ SOCKET A Heat Issue

did you replace with high quality(japanese)low esr caps?
always replace all when you see even one of its type bad.
i would verify vcore is correct by measuring with a good vom.the onboard monitoring on most boards are inaccurate.

[yanz]

Re: Biostar M7VIQ SOCKET A Heat Issue

is AXP 1700+ officialy suppported by the board? i have experiences that when i put barton or tb on old socket A board, the temp sensor unlogically report a very high temperature. updating the bios will cure the problem on this case.

wrong orientation of the heatsink could also be the cause of that high temp. but surely you already know that... wrong/bad caps, like kc8 said, can cause noisy ripple for the cpu or for the vrm input and force those components to work harder and inneficiently, so heat will rise.

check also the caps on your psu.

[UraBahn]

Re: Biostar M7VIQ SOCKET A Heat Issue

Originals were OST I.Q 6.3v 3300mf 105c and were replaced with 3300mf 6.3v 85c.

You shouldn't use general-purpose caps to replace low-ESR caps. All caps with 85c temp tolerance are AFAIK general-purpose. The low-ESR capacitors I personally recommend are Rubycon MBZ, MCZ, or YXG. Some users report excellent results with Samxon, but I have yet to personally test them.

[MD Willington]

Re: Biostar M7VIQ SOCKET A Heat Issue

Via KM266 chipset, supports all 266 bus K7 processors...

http://www.biostar-usa.com/cpusupportA.asp#M7VIQ

MD's Temperature related standard checklist.

Check the following for overheating or perceived overheating:

- Is the heatsink correctly installed ?
--> Verify it is correctly installed.

- Is the heatsink filled with dust and crud ?
--> Clean with compressed air in a can.

- Is the heatsink fan operating ?
--> Replace defective fan with similar or better unit.

- Is the heatsink adequate for that application/CPU ?
--> Verify it meet the requirements for the CPU being used.
--> RETAIL heatsink? May require lapping and better TIM.

- Is thermal interface material used between heatsink and cpu ?
--> Verify it is used, and is applied according to the manufacturers guidelines.
--> Recommended PCM's, thermal pads from "AMD Thermal, Mechanical,and Chassis Cooling Design Guide #23794.PDF.
- Bergquist HF225UT Phase Change
- Chomerics T725 Phase Change
- Honeywell PCM45 Phase Change
- Power Devices Powerfilm Phase Change
- ShinEtsu PCS-TC-11T-13 Phase Change
- Thermagon T-pcm905C Phase Change
--> Recommended thermal interface material aka: grease, gel etc.
- Arctic Ceramique.
- Arctic Alumina.
- Arctic Silver, 3, 5 etc.

- Is the TIM pad cover removed from heatsink before installation, if using supplied TIM pad ?
--> Remove the cover before installation, failure to do so will insulate the cpu from the heatsink.

- Is there adequate airflow or case ventialation ?
--> Verify airflow, add case fans if required.



- Is the Vcore set higher than specified by the manufacturer ?
--> Verify the Vcore is set to the manufacturers specification in the mainboards bios.

- Is the temperature read via the internal temperature diode. Is the tremperature read via the socket thermistor ?
--> Temperatures read at the diode can and will be higher than an external reading.

- Is the temperature sensor properly calibrated ?
--> Several boards have this problem, check manufacturers bios revision history for calibration fix.
--> Does the heatsink feel warm or HOT, if it's warm it could be a miscalibration error.

- Outside temperature high ?
--> If the external temperature is high, then the case fans will be drawing in hot air, especially during summer months. Remeber, when it's Winter in the Northern Hemi-sphere, it's Summer in the Southern Hemi-sphere & vice-versa.

MD

[kingmelee]

Re: Biostar M7VIQ SOCKET A Heat Issue

You shouldn't use general-purpose caps to replace low-ESR caps. All caps with 85c temp tolerance are AFAIK general-purpose. The low-ESR capacitors I personally recommend are Rubycon MBZ, MCZ, or YXG. Some users report excellent results with Samxon, but I have yet to personally test them.

Probably a good point, but should that be making a difference in the cpu temp; at this point? I would think that with the replacement of 4 obviously swollen caps the temps would have dipped to a noticable degree regardless of Low ESR or General Purpose caps having been placed on the board.

I'll see if I can post a hex dump of the system from CPUZ or Everest.

[yanz]

Re: Biostar M7VIQ SOCKET A Heat Issue

It could be something then just those caps.

MD said: Does the heatsink feel warm or HOT, if it's warm it could be a miscalibration error.

IME, anything can't be touchable probably are >50C.

[kingmelee]

Re: Biostar M7VIQ SOCKET A Heat Issue

Probably a good point, but should that be making a difference in the cpu temp; at this point? I would think that with the replacement of 4 obviously swollen caps the temps would have dipped to a noticable degree regardless of Low ESR or General Purpose caps having been placed on the board.

I'll see if I can post a hex dump of the system from CPUZ or Everest.

------[ Motherboard Model ]------

Biostar M7VIQ

------[ ISA Sensor Device at 0290 ]------

0000 01 FF 01 FF 00 00 00 00 01 01 01 01 3C 3C 0A 0A
0010 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0020 6E 00 CA B4 CC 22 36 15 43 FF FF 85 2A 00 43 AC
0030 20 00 C4 14 80 00 00 01 00 00 31 24 85 11 00 00
0040 01 DE 0F FF FF 00 00 AF 2D 02 01 04 50 95 00 A3
0050 FF FF 80 FF FF FF 00 80 60 50 FF FF 11 89 FF 05
0060 6E 00 CA B4 CC 22 36 15 43 FF FF 85 2A 00 43 AC
0070 20 00 C4 14 80 00 00 01 00 00 31 24 85 11 00 00
0080 01 FF 01 FF 00 00 00 00 01 01 01 01 3C 3C 0A 0A
0090 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
00A0 6E 00 CA B4 CC 22 36 15 44 FF FF 85 2A 00 43 AC
00B0 20 00 C4 14 80 00 00 01 00 00 31 24 85 11 00 00
00C0 01 00 00 FF FF 00 00 AF 2D 02 01 04 50 95 00 A3
00D0 FF FF 80 FF FF FF 00 80 60 50 FF FF 11 89 FF 05
00E0 6E 00 CA B4 CC 22 36 15 44 FF FF 85 2A 00 43 AC
00F0 20 00 C4 14 80 00 00 01 00 00 31 24 85 11 00 00

Reg$20 CPU Core: r = 110, r*0.016 = 1.76
Reg$21 CPU Aux: r = 0, r*0.016 = 0.00
Reg$22 +3.3 V: r = 202, r*0.016 = 3.23
Reg$23 +5 V: r = 180, r*0.016 = 2.88
Reg$24 +12 V: r = 204, r*0.016 = 3.26
Reg$25 -12 V: r = 34, r*0.016 = 0.54
Reg$26 -5 V: r = 54, r*0.016 = 0.86

------[ Motherboard Model ]------

Biostar M7VIQ

------[ 1 SMBus detected ]------

------[ SMBus #0 ]------

SMBus Type: Intel / VIA / ServerWorks / SMSC / ATI
SMBus Port: 5000
Scan Type : Full

------[ SMBus Device B00-D51 ]------

0000 80 08 07 0D 0A 01 40 00 04 50 60 00 82 08 00 01 ......@..P`.....
0010 0E 04 08 01 02 20 00 60 70 00 00 3C 28 3C 28 40 ..... .`p..<(<(@
0020 60 60 40 40 00 00 00 00 00 00 00 00 00 00 00 00 ``@@............
0030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 7B ...............{
0040 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0060 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0070 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0080 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
0090 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
00A0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
00B0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
00C0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
00D0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
00E0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................
00F0 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF ................

[kingmelee]

Re: Biostar M7VIQ SOCKET A Heat Issue

To followup, replaced the other two caps with matching values. One of the two caps I left had since swelled as well. Replaced that and the other that still looked good, yet temps are still high @ 67 degrees Celsius 153 Degrees F.

Any help appreciated. Side cover is off. Internal ventilation is good. CPU fan working ok...

[kingmelee]

Re: Biostar M7VIQ SOCKET A Heat Issue

did you replace with high quality(japanese)low esr caps?
always replace all when you see even one of its type bad.
i would verify vcore is correct by measuring with a good vom.the onboard monitoring on most boards are inaccurate.

What posts would I connect to to read the vcore value?

[gonzo0815]

Re: Biostar M7VIQ SOCKET A Heat Issue

What posts would I connect to to read the vcore value?

Take any ground, may be one of the screw pads near the cpu. Then touch with the other probe the 3 pin mosfets. In most cases it is the middle pin, e.g. the pin wich is soldered with the back to the pcb. If none of the midlle pins is at the estimated voltage range, try the other pins as well. If you have replaced the Ost caps with mediocre ones, the VRM controler will increase the voltage and is producing high voltage spikes in oder to compensate for the higher ESR los. This can lead to any sort of uncontroled side efect`s.