You should refer to the Vostro 3471 online specifications guide to see the supported RAM. Based on which you can choose to purchase the RAM from Dell or from a local computer store. As long as there is no damage caused by you to the system while installing the memory, it shouldn't be a problem. The upgraded RAM would not be covered under your systems warranty and if there is an issue caused due to the RAM, we would be unable to assist.
I am planning to upgrade the RAM, but my PC is under warranty. Can I go ahead and purchase a RAM and put in the slot or should I check with Dell  on this? Would the warranty being void if i upgrade the RAM by myself ? If I planning to get support from Dell for RAM upgrade it seems a lengthy process like quote creation to order and delivery and then support person to come and fix the RAM.  I need it as early as possible not sure that will happen with quick turnaround with Dell support. Please suggest the right solution Thanks Ramachandran E
Vostro 3471, RAM upgrade in warranty period