you do realize graphics cards do processing right? also just because the wiki says that doesn't mean its a fact the ps4 has 3 teraflops and costs $400 my PC has 16 teraflops and costs $1600 if you use your brain 400 goes into 1600 4 times and 4 times 3 is 12. also the higher grade chips tend to have more power than two weaker chips added together that should equal the same processing power.