I am trying to add a second identical 3.2 GHz Xeon CPU to my 1600sc server. With both CPUs & fans installed, the server will not pass POST and I get no video, no beeps. Running one CPU works fine and I've swapped the two CPUs into the CPU1 position with no problem. But it won't boot with two CPUs installed. Ideas?
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Re: Adding second CPU
Did you receive a VRM with the the PRC upgrade kit? And have you installed it?
The following items are/should be included in a microprocessor upgrade kit: • A microprocessor (PRC) • A heat sink • Heat-sink retention clip(s) • A voltage regulator module (VRM), Your upgrade kit may also include a cooling fan.
If you are adding a secondary microprocessor, examine the VRM to ensure that it is the correct VRM for your system. Install the VRM in the appropriate secondary VRM connector, ensuring that the latches at each end of the connector engage. If you received two VRMs with the upgrade kit, replace the primary VRM already installed in the system with one of the VRMs from the upgrade kit. Note: The system does not support mismatched VRMs.
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I would check the BIOS to make sure the system is registering the second cpu. (The 2nd cpu needs to be in the slot when you do this.) If it is not, enable it. If after rebooting your server still will not see the 2nd cpu, you will need to check the socket with a voltimeter to make sure power is getting to the socket slot.
Are you sure the new motherboard was of the same revision as the old one? Dell shipped 400FSB boards during the beginning of the 1600SC line and shipped 533Mhz boards during the end of the run. I would check the revision level of the motherboard to make sure it is compatible. If it's the same revision, I would start small and connect just one CPU and put the system at 512mb ram and see if that works. If this works, you can begin to add additional components as needed.
Yes, some systems (newer PowerEdge Servers, generally 6/7th Generation and above) have onboard VRMs.
1600sc is a 6th gen PowerEdge (with Simple Computing). I can checked and be absolute certain from within Dell. I'm on VAC until Saturday.
In the meantime, check the PRC model and revision and ensure that they match. Given that a single PRC POST/Boots, try upgrading (if not already) the system BIOS to latest revision.
If the PRC model/revision does match and you have the latest BIOS version, also if the VRMs are not needed, then from the Troubleshooting you have already done, we may conclude that the PRC 2 slot is faulty.
I will confirm the VRM query on Saturday.
PowerEdge 1600SC, BIOS A12 Update Package for Microsoft Windows - http://ftp.us.dell.com/bios/PE1600SC-BIOS-WIN-A12.exe
PowerEdge 1600SC, BIOS A12 Floppy Update Package - http://ftp.us.dell.com/bios/PE1600SC-BIOSA12.exe
I hope that you fixed your problem without troubles by now, but if you still have not, I can help. I added a second xeon processor to my Dell PowerEdge 2600 a couple of years ago.
Lay the server on its left side then loosen the three thumbscrews on the right front side and "slap" the cover off backwards.
You should have by now identified the current processor by running cpuid software that I think comes from Intel's website in order to buy an identical cpu. That was the hardest part, finding an identical one still for sale. If I remember the Poweredge 2600 could only use xeon processors with only up to 512 kb of cache or someother small amount and are not that available still new in the box.
You also have to get two identical voltage regulator modules (vrm). I was not able to get a second one for some reason and just bought two identical ones specifically for the xeon processors that I was using. Be sure to do your homework on this. MATCHING cpu's and MATCHING vrm's.
That's it. Each processor has two cores and you should see all four after you boot.
Another thing to think about would be setting the processor afinity to run your most intensive process to all four cores while only letting most applications to only use the first core.
I hope this helps if you haven't already had any success.