XFX Radeon R9 270X 2GB GDDR5 PCI Express 3.0 CrossFireX Support Video Card R9-270X-CDBC GPUs / Video Graphics Cards - Newegg.com
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ASUS R9 270X DirectCU II TOP Specs | TechPowerUp GPU Database
User manual Gigabyte Radeon R9 270X (English - 39 pages)
MSI Radeon R9 270X GAMING 4GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card GPUs / Video Graphics Cards - Newegg.com
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