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The graphics are handled by dual state-of-the-art AMD FirePro workstation-class GPUs, each with up to 6GB of dedicated VRAM. The provide up to 4096 stream processors, dual 384-bit memeory buses, up to 12GB of GDDR5 VRAM and 528GB/s total bandwidth.
These can handle not only rendering a 4K video, put also powering up to three 4K displays simultaneously, and deliver up to 7 teraflops of power (compared to a maximum on 2.7 teraflops for the current Mac Pro).
A system like the new Mac Pro needs something special when it comes to storage, and Apple hasn't disappointed us. Rather than go for hard drives (HDDs) or solid state drives (SSDs), Apple has instead chosen next-generation PCIe flash storage, which is up to 2.5 times faster than the fastest SATA-based solid-state drive, and up to 10 times faster than a 7200-rpm SATA hard drive.
The PCIe storage offers up to 1,2GB/s reads, 1.0GB/s writes, and up to 1TB of storage.
This means that the new Mac Pro will have the fastest storage available to a desktop workstation.
Because the Mac Pro packs so much computational power into such a small space, it needs an effective way to deal with that heat. To effectively cool the system, Apple has built the entire system is built around a thermal core. This, according to Apple, not only simplifies the design but also improves cooling.