The iMac Pro “18-Core” 2.3 27-Inch (5K, Late 2017) features a 2.3 GHz Intel Xeon W processor (W-2191B) with eighteen independent processor “cores” on a single chip, 42.75 MB of cache, 128GB and an Radeon Pro Vega 56 graphics processor with 8 GB of dedicated HBM2 video memory.

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