Windows XP

Yeah!! I Know, its pretty old now but I have Windows XP with 512MB RAM. Just want to see it in good shape again. Suggest me, If I can upgrade the RAM or should opt for OS upgrade to Windows 7 on same machine (If it is possible). And if RAM upgrade will work to speed up the system.
 
RAM of 512MB is deplorable today. What system is this (Dell?) and it's model?

Getting to Win/7 would take some work, and unless you're well skilled, IMO, you would be better off getting a new off-the-shelf Win/10
 
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