Hi there Anthony 
Would you mind further explaining what are you using the workstation for and the purpose of the upgrade that you are looking at?
Are you planning on adding more HDDs/SSDs to your system? Are you going to put them in a RAID configuration?
You should first consider what free PCIe ports you have and if you will be populating them with other expansion cards and what actual speeds will they provide you with.
SDH gave you some good suggestions and explanations!
Post back with some more details!
Captain_WD.