Pentium D stability issues, "MSR comparison" fails in BITS

[idata]

Hello,

I have a Foxconn motherboard based on the SiS 661FX chipset.

It worked for several years with no problems, with a Pentium 4 3 GHz CPU (1024 MB cache, 200 MHz FSB).

Now I purchased (used of course) and installed a Pentium D 915 - 2.8 GHz, 2x2048 MB cache, 200 MHz FSB. As the FSB remains the same I did not expect problems.

But the system became unstable. I use Debian Linux (squeeze) and once in a few hours I get a hang, or (less often) an X server segfault and restart.

The CPU is kept cool enough by a Zalman cooler with heat pipes on max revs; besides, it usually crashes wihout any particular load. So I'm not overheating it. And the RAM can not be stressed as the FSB has not changed, right?

I got the BITS utility from Intel - http://downloadcenter.intel.com/Detail_Desc.aspx?ProductID=483&DwnldID=19763〈=eng&iid=dc_rss http://downloadcenter.intel.com/Detail_Desc.aspx?ProductID=483&DwnldID=19763〈=eng&iid=dc_rss . And in the "MSR comparison text", it shows that four MSRs are not the same for the two "CPUs" (cores). The MSRs are 0x2a, 0x198, 0x19f, 0x26f .

Can this be the cause of stability issues? And if yes, is there a way to resolve it, other than getting the motherboard manufacturer to fix the BIOS?

(Another suspicion is overheating of the north bridge - although the north bridge should not be loaded more than before? but then there is more heat dissipated in the case).

[Adolfo_S_Intel2]

Please bear in mind that this product is no longer under support, but I would suggest making sure that your motherboard fully supports the processor that you have.

[idata]

I did make sure the CPU is supported before acquiring it. Here is the CPU support list for this motherboard:

http://www.foxconnsupport.com/cpusupportlist.aspx?type=mb&model=661FX7MJ-RSH&cputype= http://www.foxconnsupport.com/cpusupportlist.aspx?type=mb&model=661FX7MJ-RSH&cputype=

I understand the model is not under support, but I would very much appreciate information on the meaning of these particular MSRs: 0x2a, 0x198, 0x19f, 0x26f .

[Adolfo_S_Intel2]

I would suggest contacting a Field Application Engineer (FAE) tough any of the Authorized Intel® Distributor s so they can provide you the meaning of those MSRs.

You can find a list of Authorized Intel® Distributors at:

http://www.intel.com/cd/channel/reseller/asmo-na/eng/227304.htm http://www.intel.com/cd/channel/reseller/asmo-na/eng/227304.htm

If you are outside the United States, please access the following link and select a location, to find the closest authorized distributor:

http://premierlocator.intel.com/Default.aspx http://premierlocator.intel.com/Default.aspx