the Specs of the motherboard should tell you if its a AMD/Intel or what type of one of those it supports up to.
for example:http://www.tigerdirect.com/applications ... u=I69-2146
Motherboards > Socket 775 > Intel Chipsets > 945G
Intel D945GCCRL Intel Socket 775 MicroATX Motherboard / Audio / Video / PCI Express / 10/100 Ethernet LAN / USB 2.0 / Serial ATA 2 Users Rated
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Item Number: I69-2146
Availability: In Stock
Regular Price: $.00
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My Price: $69.99
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Intel® Desktop Board D945GCCRL
The Intel® Desktop Board D945GCCRL essential series offers a cost-efficient integrated graphics solution. This board is designed for the Intel® Core™2 Duo, Intel® Pentium® D, Intel® Pentium® 4 and Intel® Celeron® D processors supporting up to 800/533 MHz system bus in the LGA775 package. Other features include PCI Express x16 graphics connector, dual-channel DDR2 533/400 memory, Intel® Graphics Media Accelerator 950, integrated Intel® PRO 10/100 Network Connection, Intel® High Definition Audio and up to eight USB 2.0 ports.
Form Factor: microATX
Processor Interface: Socket 775
Processors Supported: Intel Pentium 4 LGA775
Intel Celeron D
Intel Pentium D
Intel Core 2 Duo
hope that helps