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2015 27″ iMac 5K (R9 M390) [6th,4C] + Radeon VII @ 16Gbps-TB2>TB3 (Razer Core X) + macOS 10.15.2 [Koncept_Zero] | External GPU Builds
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Amazon.com: Sapphire Radeon R9 290 4GB GDDR5 Dual DVI-D/HDMI/DP PCI-Express Graphics Card (21227-00-40G) : Electronics
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