i845 mboard p4 1.7GHz with 1 GB SDRAM problem

Intel / I845
June 1, 2010 at 09:40:25
Specs: Windows XP
Hello,

I have Intel i845-ITE8712 chipset with 1.7GHz cpu. I have just upgraded the SDRAM from 256 MB to 1GB (two 512MB 133MHz DIMM SDRAM).

The BIOS is Award modular BIOS v6.00PG

The problem is system restarts after few minutes (after 20 to 30 min).

I have tried to set SPD manually in BIOS (3-2-2) but it does not work. Currently the frequency in BIOS is: 100MHz * 16

The system works well for hours with only one 512MB SDRAM (anyone from the two).

Would you please help me sort out this problem?

Thanks in Advance,
Mukund


See More: i845 mboard p4 1.7GHz with 1 GB SDRAM problem

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#1
June 1, 2010 at 09:53:13
It would help to know the make/model of the board, the chipset info isn't much help. And 100's of boards use the "Award modular BIOS v6.00PG", so that's not much help either. If you have a 1.7GHz CPU (P4?), why is it running at 16 x 100MHz (1.6GHz)? Are you sure you don't have a 1.6GHz CPU? Did you confirm that your board supports 1GB (2 x 512MB) PC133? Is it running at 133MHz or 100MHz? Try testing the RAM with memtest86:

http://www.memtest86.com/download.html


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#2
June 4, 2010 at 04:54:22
It would help to know the make/model of the board, the chipset info isn't much help. And 100's of boards use the "Award modular BIOS v6.00PG", so that's not much help either.
I am not sureabout make/model of board.
At bootup, it shows: i845-ITE8712-6A69VPRDC-00


If you have a 1.7GHz CPU (P4?), why is it running at 16 x 100MHz (1.6GHz)? Are you sure you don't have a 1.6GHz CPU? Did you confirm that your board supports 1GB (2 x 512MB) PC133? Is it running at 133MHz or 100MHz? Try testing the RAM with memtest86:
I have changed it to 100MHz x 17. I have also confirmed that the board supports 1GB PC133. This is wat written in motherboard tech manual: (unfortunately the manual does not mention about company/make/model etc.)
System Memory:
A total of 3 168-pin DIMM sockets
Supports 133MHz SDRAM devices
Supports 64MB, 128MB and 512MB technologies for X8 and X16 devices
Maximum memory bandwidth of 1GB/s with PC133
No registered DIMM support
Support for DIMM SPD scheme via SMBUS interface
Memory size up to 1.5GB

I have checked for setting CPU speed to 133, but the manual says that in this motherboard jumperless feature is implemented such that no jumper is required to be set for different type of CPU installed.
The BIOS shows 100MHz and it does not allow it to change.

Now regarding, memset86, after running this, it shows errors in 2nd test (8 bit moving) and the CPUHalts. A stack is shown and the program stops.

Is it a problem with CPU that it does not support 133MHz? Looks the motherboard and SDRAM supports to it.

In BIOS there is one option, set memory frequency to: 1)Auto or 2)PC133. I had set it to PC133 but its the same result.


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#3
June 4, 2010 at 05:02:59
If you have access to a board manual why don't you know the make and model of the board?

When running memtest, no errors are acceptable.

Are both stick of RAM identical?


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Related Solutions

#4
June 4, 2010 at 07:34:14
If I had to take a shot in the dark, I would say Power Supply.

PowerMac 9600(1 ghz G4)
512mb RAM
50gb SCSI
ATi 9200 PCI


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#5
June 5, 2010 at 01:48:01
If you have access to a board manual why don't you know the make and model of the board?
Unfortunately, the motherboard manual doesn't mention anything about its make and model. It only mentions: Intel(R) 845 Chipset.
I have only the manual related to motherboard. The PC is old. I baught it in 2001.


When running memtest, no errors are acceptable.
I agree. Are the errors because the SDRAM is 133MHz and processor FSB is 100MHz?

Are both stick of RAM identical?
Yes. Both the SDRAMs are identical. The specs are:
IBM 512MB 133MHz (32MX64) 3.3V S N
FRU: 33L 3072


The motherboard also mentions the processors supported are:
Support Intel P4 processors and the Northwood processors in the 478-pin package.
Support Intel P4 processors system bus at 400MHz.

Will it solve the problem if the current P4 1.7GHz processor is replaced by P4 2.0GHz which supports FSB 400MHz?

Thanking in advance,
Mukund


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#6
June 5, 2010 at 04:35:54
RAM is made up of many individual memory chips, which in turn have multiple addresses. All the chips and addresses are not always in use. As a matter of fact, certain addresses are reserved for certain functions. Because RAM is designed like that it is possible that your computer can run OK until there is a call for a section of the memory that is defective. This is an over simplified explanation that gets the point across.

There are only a few reasons why memtest would fail your RAM. First is the one I described above.

Second is bad contacts to the RAM sticks.

Third is improper applied voltage, usually too low. You can check the output voltage of your power supply to see if all the voltages are within specs.

If your BIOS doesn't have a section that shows voltages and temperatures then you will need a third party utility. Boot into the BIOS and look.

The simplest explanation is usually the correct one. Your computer ran fine until replacing the RAM. I bet you bought it from ebay?


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#7
June 5, 2010 at 06:41:56
I am not sure how to check about the first reason about RAM failing.

Regarding second, I have checked all 512MB RAMs separately and all got thorugh so it eliminates the bad connection problem. Unfortunately I do not have meter to check the voltages. As you said correctly, the BIOS doesn't show anything related to voltages and temperatures. Seems I need a third party utility.

You guessed all right. I did buy it from ebay. Checked with magnifying glass. All the ICs on RAM are from same manufacturer and having same number but one from Japan, one from Malasia and one from China :(

Anyway, I had previosly two RAM sticks with 128MB each. I tried with one 512MB and two 128MB in 3 DIMMs and found that memset86 passed well. So I think instead of 1GB I settle for 768MB RAM.

I think it would be the last chance of checking the voltages using third party tools. I will do it certainly. I am now searching for such tools on net. But I dought its related to power supply. It seems its beacuse of the RAMs are of different make.

Thanks for your prompt response.

Kind Regards,
Mukund


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#8
June 5, 2010 at 10:27:17
Download SIW to view sensor settings and much, much more. I think your RAM has at least one bad chip on it. There is no fix. Exchange the RAM.

RAM chips come in all different qualities. The RAM you bought may have been assembled using inferior grade chips.

I never buy anything electronic and new from ebay. There are too many reputable online dealers to bother with ebay. Try newegg.com for any computer related hardware if you are in the USA or Canada.

http://www.gtopala.com/siw-download...


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#9
June 6, 2010 at 06:49:22
Hi,

I have downloaded and executed siw and checked for the sensors. The result is:
ITE IT87:
Voltages Value Min Max
CPU VCORE 3.09 V 3.09 V 3.09 V
VIN1 3.15 V 3.15 V 3.15 V
+3.3V 3.26 V 3.26 V 3.26 V
+5V 5.40 V 5.40 V 5.40 V
+12V 4.16 V 4.16 V 4.16 V
-12V -8.26 V -8.26 V -8.26 V
-5V -4.16 V -4.16 V -4.16 V
+5V VCCH 5.16 V 5.16 V 5.16 V

Hmm. I baught first time from ebay. I am in India. Now I will never buy anything from ebay.

How about the voltages? Is it looks SMPS problem?

Thanking in advance,
Mukund


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#10
June 6, 2010 at 07:08:53
There must be some error with those readings.

+12V 4.16 V 4.16 V 4.16 V
-12V -8.26 V -8.26 V -8.26 V
-5V -4.16 V -4.16 V -4.16 V

Those readings are way off. Maybe SIW isn't handling your board well.

You could try speedfan or CPUID.

Voltages should be within +- 10% of specs. 3.3V, 5V, 12V.


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