A:Answer This Lenovo IdeaCentre 5i Gaming Desktop Computer, model number 90T00007US, ships with 16GB DDR4-3200MHz RAM installed. (2x 8GB UDIMM DDR4-3200MHz RAM). There are two DDR4 UDIMM slots, dual-channel capable. The maximum RAM that this model configuration can support is: Up to 32GB DDR4-3200MHz RAM. There is also a 512GB M.2 2280 PCIe 3.0x4 NVMe solid state hard drive installed. The maximum storage capacity that this model configuration can support is: Up to three drives, 2x 3.5 inch HDD + 1x M.2 SSD: • 3.5 inch HDD up to 2TB plus • M.2 SSD up to 1TB. This configuration uses the Intel B660 motherboard Chipset with the Intel Core i7-12700 Processor, 12C (8P + 4E) / 20T, P-core 2.1 / 4.8GHz, E-core 1.6 / 3.6GHz, installed. Here is a link to the complete parts list for this model configuration with compatible substitutes also listed: https://pcsupport.lenovo.com/us/en/products/desktops-and-all-in-ones/5-series/ideacentre-gaming-5-17iab7/90t0/90t00007us/parts/display/buy-now?linkTrack=Caps%3ABody_SearchProduct&needNotRedirectTypeOne=true&searchType=5&keyWordSearch=90T00007US