What is your intended use case? Where are you located, specifically? Pricing throughout the Eurozone differs dramatically. All are 4c/4t CPUs. If this is for gaming, the i3-8100 should net you the best performance….. but the Ryzen3 1200 is a solid “value” offering. Using Germany as an example, the i3 setup would cost ~240EUR. PCPartPicker part list / Price breakdown by merchantCPU: Intel – Core i3-8100 3.6GHz Quad-Core Processor (€99.90 @ Caseking) Motherboard: MSI – B360M PRO-VD Micro ATX LGA1151 Motherboard (€70.46 @ Mindfactory) Memory: G.Skill – Ripjaws 4 series 8GB (2 x 4GB) DDR4-2400 Memory (€67.59 @ Amazon Deutschland) Total: €237.95 Prices include shipping, taxes, and discounts when availableGenerated by PCPartPicker 2018-06-18 23:59 CEST+0200Whereas an overclockable R3 + B350 board and faster memory (really required for Ryzen) would set you back a near identical amount. PCPartPicker part list / Price breakdown by merchantCPU: AMD – Ryzen 3 1200 3.1GHz Quad-Core Processor (€81.99 @ Amazon Deutschland) Motherboard: Gigabyte – GA-AB350M-DS3H Micro ATX AM4 Motherboard (€63.99 @ Amazon Deutschland) Memory: Patriot – Viper 4 8GB (2 x 4GB) DDR4-3000 Memory (€94.89 @ Alternate) Total: €240.87 Prices include shipping, taxes, and discounts when availableGenerated by PCPartPicker 2018-06-19 00:00 CEST+0200So, while the i3 would have the slight edge in gaming….. chances are, you can only upgrade in future to CoffeeLake CPUs. Whereas, the B350 board / AM4 socket will be supported (with a BIOS update) through 2020. Personally, I’d opt for the Ryzen3 1200 + B350 board.