The new iMac series adopt GPUs supplied by AMD, with the super workstation-class 27-inch iMac Pro equipped with Radeon Pro Vega 56 GPU and 8GB HBM2 memory or Radeon Pro Vega 64 and 16GB HBM2 memory. The high-end GPUs are packaged using 2.5D technology while the general-spec GPUs use flip-chip packaging process. Siliconware Precision Industries (SPIL) handle the packaging for the iMac GPUs, with testing support from King Yuan Electronics, the sources said.
AMD's Vega series GPUs are fabricated by GlobalFoundries on its 14nm process, but TSMC has won orders to fabricate AMD's NAVI GPUs using its 7nm process technology.
The new iMac Pro is scheduled to ship in December starting at $4,999. You can learn more about the machine here.
Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.