Titan A399 Octane - AMD RYZEN Threadripper Quad GPU Rendering Workstation PC up to 32 Cores - Best Workstation Computer for CUDA GPU Rendering.
Titan A450-SYS - AMD Opteron 64 Core capable Multi GPU server tower with redundant power supplies
BIZON X5500 – NVIDIA AI Workstation | AMD Threadripper 4 GPU AI Deep Learning Workstation PC up to 96 Cores | Best Workstation Computer for Ai, Deep Learning, data science, Tensorflow
AMD CrossFire - Wikipedia
AMD CrossFireX preview - quad-GPU scaling to new heights - Graphics - Feature - HEXUS.net - Page 4
Quad-Core Gaming Roundup: How Much CPU Do You Really Need? - PC Perspective
AMD Quad Core 20GB 2TB GPU 4GB Gaming Computer PC play Game Fortnite GTA5 | eBay
Drivers and Requirements - AMD's CrossFireX: Tri & Quad GPU Preview
AMD Radeon™ PRO W6400 Professional Graphics Card | AMD