AMD Radeon HD 7770 1GB GDDR5 PCIe Reviews, Pros and Cons | TechSpot
iXBT Labs - i3DSpeed, May 2013 - AMD Radeon HD 7770 1024MB 128-bit DDR5 (1000/1000/4500 MHz)
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PowerColor Radeon HD 7770 Video Card AX7770 1GBD5-2DH - Newegg.com