Dual Xeon problems on Asus Z9PE-D8 WS.

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DoDidDont

DoDidDont

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May 27, 2009
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I was running on one CPU for the last year. did all the correct thing like making sure both 8-pin CPU sockets are supplied etc. The system has been running flawlessly since I built it.

Finally got round to installing the second CPU, memory and cooling solution.

Booted up, and everything looked fine from the start. Bios shows 2 CPU's installed. 64GB of memory detected, Hyper-Threading enabled etc.

Got into Windows.

First thing I did was to check the device manager, clicked on processors, 32 logical cores displays, big simile on face...

Then the problems start.

CPU-Z selects only one processor showing 8 cores 16 threads, second processor info not accessible and greyed out.

3DS MAX only shows 16 logical cores.

System information only shows 8 cores 16 threads.

Cine-Bench 11.5 only shows 16 threads etc.

How can both processors be shown in bios and in the device manager within windows but not show on all other applications?

I am running windows 7 x64 professional. According to Microsoft this can detect 2 CPU's and up to 256 logical cores.

This really doesn't make any sense???

Turned off Hyper-Threading in bios, went back into windows and now CPU-z can select the second processor, but both then obviously show 8 cores 8 threads.

Back into bios , enable HT again... Back to same problem...

Any ideas??

Thanks.

I'm using 2x E5-2687W on Asus Z9PE-D8 WS
 
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DoDidDont

DoDidDont

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May 27, 2009
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Problem solved! Ran MsConfig system configuration, windows 7 Boot Tab> advanced options> Number of processors was set to use 16 cores. for some reason 16 was the max it would increase to. Un-ticked the box, restarted and Vola! 32 logical cores in all apps. Went back into MsConfig, 32 cores were then selectable for start up.

 
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Michael Couch

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Jan 3, 2014
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I have the problem of only 1 CPU on the board working. Add the second and then nothing. Additionally I have to restart 6 time to get into windows. I'm running the 2650s. Also new card today asus 7950. The board doesn't like it. It shows only blank screen
 
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turbotrk

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Feb 10, 2011
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I have exactly the same problem on my Z9PE, I am using 2 xeon 2687w es , if I put the second in it is not recognized, I swapped the cpus and still the same. Also my evga gtx 780ti does not initialize at all, I put in an old gts250 and it works. Flashed the last bios but not improvement. Could be the 2 xeons are not compatible each other, I will try other two as soon as I have the possibility otherwise it is a mb problem.
 
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Michael Couch

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Jan 3, 2014
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welp i have to say that asus was great with customer service. although my amazon seller is kinda not so great with it. asus had me update bios only to discover that bios did not solve the card issue. after a closer look into socket 2 i have discovered that there are bent pins. those little guys are tiny to see. anyways i will be sending my board back so that it gets repairs which i hope that when i get it back my raid and everything will still be intact.
 
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masar

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Apr 15, 2014
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Hi there, I would like to know if I can use 2 different Xeon (E5-2630 v2 + E5-2650 v2) with the ASUS Z9PE-D8 WS? or does it have to be the same exact one?

Thanks for your help.

 
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Thebig couch

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Apr 16, 2014
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You must use the same set processor. You might be able to use V2 if the bios supports it

 
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Thebig couch

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Apr 16, 2014
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Just giving an update. Updated bios and solved most of the reboot issues. by the way you can use radeon 6990s with the board. i still have the issues of the second processor not working. I got some ram now. for the longest time i have been running 8 gigs and it works fine. i added the next 8 gigs and it doesnt recognize it.
 
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