Cards being newer has nothing to do with PSU requirement.
Indeed compared to older cards, a newer card of the same performance draws less power. Compare GTX 970 to GTX 1060 - more performance, lower TDP. Because more efficient architecture.
The OP appears to have relatively limited funds, or else they'd not still be using a pre Sandy-bridge platform for gaming. Which is not a criticism of them, of course. But taking that as read, telling them to replace a perfectly adequate
PSU that they have literally just got
for a higher wattage one purely on the basis of personal preference is, in my view, at best unhelpful.
"None of us" suggested a new system because the OP never asked about replacing CPU / RAM / mobo. They only mentioned adding a GPU. Had they talked about pouring money into an obsolete platform, I'm sure one of us would have warned against it. I certainly would have anyway.
If hes going to stay with the system, upgrading the ram isnt a bad idea and getting a bigger cpu isnt.
Upgrading the RAM might be a reasonable idea. Maybe (I usually argue sticking to 8gb on a platform that old, and saving the money to a new platform). But either way, 32gb RAM for an ancient platform for gaming is not worth it. And a bigger CPU - that doesn't even mean anything.