5 PCS 4GB DDR2 PC2-6400 800MHz Desktop PC DIMM Memory RAM 240 Pin For AMD SystemItem specifics:Capacity: 4GBPins: 240-PinVoltage: 1.8VForm Factor: DIMMSpeed: PC2-6400 800MHzOnly compatible with AMD system.Note: Please be sure your motherboard fits this type of RAM and make sure your computer can support single 4GB RAM. If not, we recommend choosing 2GB RAM instead.Package Included:5 x 4GB MEMORY RAMDear Customers, before you buy this item, you may have the questions..."How to check the maximum storage capacity of my computer support?"1. Press the taste "Windows" and "R", then the "Run" appears.2. Enter "cmd". Then a dialog box appears.3. Continue typing with "wmic MEMPHYSICAL get MaxCapacity" without the quotation marks, then press "Enter"4. You can then get the number, the unit KB.For example, as shown in the figure is the number 4,194,304, then put it in this formula.XXX/1024/1024, 4194304/1024/1024 =4. " it means the computer can support up to 4GB Memory"!"I do not know if this RAM fit for my computer"Please download a program on the website: http://www.cpuid.com/softwares/cpu-z.htmlso you can check your computer and confirm your CPU specification.When a specification of the computer is not the same with our information of our RAM memory, please do not buy this article because it will not work properly with your computer.Caution: The information above is a computer that we choose to test, is only for reference. For more information about yours, please see the tab of "CPU" "SPD" "Memory".