https://community.intel.com/t5/Mobile-and-Desktop-Processors/Socket-604-question/m-p/329236#M9490 <P>Your option is to find exact MB model number and look at it docs or vendor support site for exact Intel Xeon CPU numbers/models supported. Socket 604 has long life with several generations of CPUs for it, there was VRM differences, FBS differences, so first S640 MBs will not support late S604 Xeons</P> Sun, 10 Jun 2012 06:26:54 GMT AP16 2012-06-10T06:26:54Z https://community.intel.com/t5/Mobile-and-Desktop-Processors/Socket-604-question/m-p/329235#M9489 <P>I have a server motherboard with dual socket 604 using, I believe, single core Xeon CPU's. I would like to upgrade to quad core Xeon processers if possible. Will any socket 604 processor work? What are my options?</P> Sun, 10 Jun 2012 03:54:59 GMT https://community.intel.com/t5/Mobile-and-Desktop-Processors/Socket-604-question/m-p/329235#M9489 idata 2012-06-10T03:54:59Z https://community.intel.com/t5/Mobile-and-Desktop-Processors/Socket-604-question/m-p/329236#M9490 <P>Your option is to find exact MB model number and look at it docs or vendor support site for exact Intel Xeon CPU numbers/models supported. Socket 604 has long life with several generations of CPUs for it, there was VRM differences, FBS differences, so first S640 MBs will not support late S604 Xeons</P> Sun, 10 Jun 2012 06:26:54 GMT https://community.intel.com/t5/Mobile-and-Desktop-Processors/Socket-604-question/m-p/329236#M9490 AP16 2012-06-10T06:26:54Z