
If you have a brand name computer (eg HP, DELL, IBM you must provide us with a HeatSink part number or we will ship you a generic heatsink if you order one from us.In order to run dual cpus in one machine the SL codes must match P5GC-MX / mATX, LGA775, Intel 945GC chipset, 2 DIMM(max 2GB) DDR2-533 MHz, GMA 950 Graphic (Shared up to 256MB) with PCI-E 16X slot, Support Core 2 Duo bus 1333MHz Ready 2,060 3 Years P5S-MX SE / mATX, LGA775, SiS 671FX chipset, 2 DIMM(max 2GB) DDR2-667/533 MHz, SIS Mirage 3 Graphic (Shared up to 256MB) with PCI-E 16X slot, SATA RAID 0,1. 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. ALL OEM Cpus are tested before shipping and carry a 21 day warranty for replacement only.In that case these pre-owned, pulls are the only ones available.

The older the cpu is the more likely it is out of production.
