Yeah it's a spambot.
Here's another of your posts:
"Congratulations !! for your new PC.Your PC configurations is so best. Windows 7 is a good operating system. Yes, it is possible to purchase all that games . You were purchased all games with some deals. Yes, it is also possible for your new PC. For that you can search on Internet in search engine."
Your three posts are all weird. I'd say you were trying to sell something ifyou had links in as well; your writing style is exactly like spam e-mails, and you talk about things not actually relevant to the topic [I've underlined them]. Is it just bad English?
And: two of those graphics cards aren't under $200, and the other two are well below $100 and perform poorly. Why did you list them (and their brands, which are irrelevant)?