As we reported earlier, by the end of the year Apple will start shipping new iMac Pro workstations based on 18-core Intel Xeon processors and Radeon Pro Vega graphics adapters. In particular, in the monoblocks of Apple iMac Pro (and now Apple workstations will be monoblocks) will be delivered either Radeon Pro Vega 64 video cards, or a few truncated Radeon adapters Pro Vega 56.
The older adapter Radeon Pro Vega 64 will contain 64 computational units and, correspondingly, 4,096 stream processors, and the younger Radeon Pro Vega 56, as the name implies, will be limited to 56 computational units and 3584 stream processors. The amount of HBM2 memory in the first case will be 16 GB, in the second - 8 GB. The width of the memory bus will be 2048 bits, and the exchange rate with it will be 480 GB / s and 400 GB / s for the older and younger versions. Theoretical performance
in the case of Radeon Pro Vega 64 reaches 12.5 teraflops for operations with single precision and 25 teraflops for half. The Radeon Pro Vega 56 adapter will show, respectively, 11 and 22 teraflops.
Let's clarify, the memory of HBM2 in the case of Radeon Vega serves as a cache memory. Through it, the GPU accesses on-board memory with the ability to access 512 TB of address space. How many will be in the system, so much it will be able to fill. The HBM2 memory itself is located on a common site with a GPU, which guarantees high speed of exchange with the GPU. Related Products :
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