Aripheus and Flash, There are different boards, but not because of the number of cores, but is due to different processor technology as well as the introduction of a sideplane on later releases. To find the version installed currently you can follow this link and then click on the SYSTEM CONFIGURATION tab.  www.dell.com/.../Index From there enter your Svc Tag, or if you are on the server you can click CURRENT CONFIGURATION. From the list provided you will find the motherboard. It is referenced as PLANER in the list.  Let me know if you can't find it. If you can't then I will email you for the svc tag (please do not provide on the public forum) Thanks.
I looked around, maybe not well enough, but I was told that that PE 2970s have different motherboards....some support the quad core, while others wont.... how do I tell which one I have? I have nothing installed on these systems so is there any way to tel by looking at them or booting them up and going into system settings??  If this is something that has been answered or something I can easily find then please post the link to where it is and I'm sorry I didnt see it before  Thanks, -A
mother boards