start up a blog, review stuff you own, stuff your friends own. Take good photos, be concise, triple check grammar and spelling. Get followers through youtube, facebook, twitter, etc. Approach companies with products asking for some for testing. Get new stuff to review. Get more followers since you have newer stuff. Get more stuff since you have good reviews. Get advertisers on board to be on your site. Repeat.
Really, without getting a company on board, there is no way to compete. You can't possibly do a 20-video card benchmark roundup unless you get 20 cards sent to you, and that's only going to happen with you getting advertisers and support from companies.