Moving to General Hardware.

The cpus were taken from a working server,the psus work (tested in a working server) the mobo pins look fine as well.
There is no OS on it yet.
No Error Message on the front panel.
Solved-Cpu not supported on other servers FRU.

gara024
Does anyone know how Server clustering/load balancing works? 

Clustering and load balancing are two entirely different things. When you cluster systems together (especially enterprise level equipment) it depends on the operating system being used and the specifics as to how they are being utilized. You can use type 1 hypervisors (Such as ESXi or Citrix Xen for example) to being them to a 'clustered' like environment. Essentially the OS will allow each system in turn to contribute resources to the overall OS itself by parsing threads of operations to differing members of the cluster itself. The system and servers as a whole would be seen as a singular device with the overall total amount of memory, storage and CPU's available cumulatively. I would suggest figuring out which OS you are looking to utilize and read the specifics as to their clustering options.
 
Load balancing is when you balance the traffic between systems to overall gain more efficiency. It can be used with or without system clustering. Providing that your systems themselves have identical offerings (such as web pages which are being used as shared access between servers in your environment) you can use load balancing to distribute the requests between systems. Similarly if you have multiple NIC cards in your servers (which most enterprise level equipment does) you can also load balance the network requests between the NIC's by using several different methods to distribute the overall amount of requests between the NIC's themselves. There are other types of load balancing but that is the general principle.

gara024
Thanks for the Input! I have a few rack servers but am only using one atm and its getting taxed pretty hard cpu/ram usage wise. How would i use another server to take some of the ease off the main one?
Im using Windows Server 2012 for my os.

I would suggest taking a look at this article here. You will definitely need to read up on how to utilize clustering effectively and consider the changes necessary. Generally for Windows 2012 you would want to use Hyper-V as it's tightly integrated with windows considering Microsoft created and supports Hyper-V. 
 
Other articles to pay attention to are located here and here. Please read the technet article fairly carefully as it's pretty informative. You don't necessarily need to use Hyper-V for the clustering underlying type 1 hypervisor but it does make sense considering you can use it to create more virtual servers for additional cluster nodes for Server 2012.

I'm more of looking to add another server because I'm maxing the server resources on the one I'm currently using. I don't need network load balancing or failover clustering.

Most of that info seems centered around fail over clustering?

Most of that info seems centered around fail over clustering?

gara024
I'm more of looking to add another server because I'm maxing the server resources on the one I'm currently using. I don't need network load balancing or failover clustering.

Generally when you are looking to add additional resources to a server you are using usually it's centered around physical resources (more CPU cores or physical CPUs, additional memory or NIC's for bandwidth). When you are looking to cluster servers typically you would have them defined when you install the OS using the configuration within that. Since you are using a Windows Server environment you'd certainly want to install the version for clustered computing so that you can add additional nodes to your cluster to distribute your overall processing and resources. In Server 2012 it's called 'failover clustering' where you setup nodes (in the one link provided it shows a two-node cluster) where you then setup shared cluster services (disk space or other resources) for the clustered servers themselves.