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Refurbished: Dell OptiPlex 9020 Tower 4th Gen Intel Core i5-4570 3.2GHz 8 GB RAM 512 GB SSD DVD-RW Windows 10 Pro - Newegg.com
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Amazon.com: Intel Core i5 i5-4570 Quad-core (4 Core) 3.20 GHz Processor - Socket H3 LGA-1150 Pack CM8064601464707 : Electronics
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Intel Core I5-4570 I5 4570 Processor Quad-core Lga1150 Desktop Cpu 100% Working Properly Desktop Processor - Cpus - AliExpress
Is it worth upgrading from an i5 4570 to an i7 4790k, or upgrading the motherboard to support DDR4 RAM and an i5 9400F? - Quora
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