MSI Katana GF66 11UC. MSI Katana GF66 11UG. MSI Katana GF66 12UG. MSI Katana GF66 11SC. Class: DDR4. Capacity: 4GB. Kit Capacity: 4GB. Your computer loads a program or file you select from the hard drive in to your computers RAM, then it will access each bit of data from there.
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