512gb upgraded SSD. The iMac is super fast due to the ssd being installed it works great 👍🏼 and is quick. Upgraded 10GB ram. When going on software updates it has an option of upgrading to Tahoe / sequolia 15.7.5 DO NOT UPGRADE it to any of these if you do it won’t work and you have to do system recovery if you do that you will downgrade to IOS Catalina.
eBay