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"We have confirmed with sources that recently leaked tech specs are accurate. Though Durango devkits offer 8GB of DDR3 RAM, compared to Orbis’s 4GB, Sony’s GDDR5 solution is capable of moving data at 176 gigabytes per second, which should eliminate the sort of bottlenecks that hampered PS3 game performance. Importantly, we’ve learned that Sony has told developers that it is pushing for the final PS4 RAM to match up to Microsoft’s 8GB."