Question about Intel S5000XVN Motherboard

4 Answers

Missing Processor Cores

Hello Experts

My system consist of 2 units Dual Core Xeon's Running at 3.0Ghz, 2x2Gb Ram, Dual DVI 512Mb PCIe x16, 6x Sata II Drives, Huge 1010 Wat Power Supply.

System boots fine, all 8 Cores (4 physical + 4 Hyper Treading) are running well, even under extreme stress like heavy video rendering for long periods no visible problems.

The system can run for 1 hour or 3 days & nights in a row, after it runs warm / hot, and is rebooted only 4 cores show up in the system (4 are gone)

The bios shows various errors on processor #2 but not consistant same number, it varies but alway processor # 2.
Even after the processor #1 and #2 are physicly swithed the system only shows 4 cores.

When system is used with either one processor is shows no problem, always 4 cores, even after running warm / hot and rebooted.

After the system is shut off and allowed to cool for about 1 hour is runs again on all 8 cores, for hours or days, as long there is NO reboot.

This problem is driving me nuts, I have changed to other Display cards, Ram has been changed, a power conditioner has been bought, a Huge APC smart ups to eliminate power supply problems.

Eventually the Motherboard has been exchanged, still the same problem.
I did run the processors one at the time and also swapped their physical position.

I'm lost for idea's and I need help for the first time building a new system.

Any suggestion's from the experts ?

Best regards Tony Dekkers.

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Re: Missing Processor Cores

Thanks it guru,

I am currently in contact with Intel (finally the respond) and the possibility of processor exchange / upgrade is being discussed.

Will post more info when it becomes available...............

Posted on Nov 17, 2008

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Re: Missing Processor Cores

If you are runnung Vista HP 32 bit (maybe Ultimate also), the problem lies with Vista. I had the same problem. I installed Vista Ultimate 64 bit and presto! Problem solved.

Posted on Nov 14, 2008

Re: Missing Processor Cores

Indeed I think I have to study all the cooling solutions that are available to solve my problem.
I also send a mail to Intel support, lets see how good their support is for server / work staions, but as a end user I don't even expect a reply, time will tell.

As I live on a Island and the computer shops over here only cary very basic stuff I need to get all my info from the web, and I have burned my wallet more than one before, so I will take my time before ordering anything.

If users with similar Xeon sytem changed their coolers succesfully i would appriciate it if they would post their product recommendation here.

Posted on Jan 12, 2008

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Re: Missing Processor Cores

Nice system, what kind of cooling do you have in there? How many fans etc...

Posted on Jan 11, 2008

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Address:88/150.Nelson Manikam Road,Dharma Tower Ground,Floor7&8,Choolaimedu,Chennai-94

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