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Apple upgrades its 27" iMac with 10-gen Intel CPUs, new AMD GPUs and doubles RAM capacity: Digital Photography Review
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Hands-on: eGPU enclosure + GTX 1080 Ti w/ MacBook Pro - Pascal works w/ macOS, but truly shines on Windows [Video] - 9to5Mac
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Adding an external GPU to your Mac is probably a better upgrade option than getting a new one | TechCrunch
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