

In order to run dual cpus in one machine the SL codes must match Your particular cpu may have many SL codes (think of them as versions of cpus made). This is a 5 digit alpha-numberic code on the cpu itself. SL codes - All INTEL cpu's are also designated by a Step code or SLcode.If you are going to use the CPU in a dual-cpu SERVER application or machine then YOU MUST match the SL code for the new CPU with your existing CPU.Please check your system requirements carefully before ordering CPU's.There are NO cancellations or returns accepted for these parts.

