Socialist feminism rose in the 1960s and 1970s as an offshoot of the feminist movement and New Left that focuses upon the interconnectivity of the patriarchy and capitalism.[1] Socialist feminists argue that liberation can only be achieved by working to end both the economic and cultural sources of women's oppression.[2] Socialist feminism is a two-pronged theory that broadens Marxist feminism's argument for the role of capitalism in the oppression of women and radical feminism's theory of the role of gender and the patriarchy
This is from Wikipedia, but it is a fairly good depiction of socialist feminism as I understand it.
*Radical feminism is a perspective within feminism that calls for a radical reordering of society in which male supremacy is eliminated in all social and economic contexts.[1]
Radical feminists seek to abolish patriarchy by challenging existing social norms and institutions, rather than through a purely political process. This includes challenging the notion of traditional gender roles, opposing the sexual objectification of women, and raising public awareness about such issues as rape and violence against women.
Early radical feminism, arising within second-wave feminism in the 1960s,[2] typically viewed patriarchy as a "transhistorical phenomenon"[3] prior to or deeper than other sources of oppression, "not only the oldest and most universal form of domination but the primary form"[4] and the model for all others.[4] Later politics derived from radical feminism ranged from cultural feminism[1] to more syncretic politics that placed issues of class, economics, etc. on a par with patriarchy as sources of oppression*
Again from Wikipedia, but again a description of radical feminism that I remember from 'back in the day'.