What i am wondering is how much performance this turbo gives in games like bf3. Is the nvidia card sitting way above its normal clocks because it needs to in bf3 giving a false result. I want to see what these cards are like without the turbo as you could easily turbo a 7970 by overclocking it. I know its 2 different methods but for a fair comparison of the cards i hope the review sites do there tests with turbo off and then do a comparison with turbo on to show the difference.
No. Turbo will up minimum framerates... So it may or may not affect average frame rates depending on what measure you use for central tendency. It will be different from simply overclocking as Turbo only needs to run at higher clocks, consuming higher power, for short bursts. This will allow a card to even sit at its "maximum overclock" and still turbo beyond that clock speed to reach a frequency at which the GPU could never maintain long term stability. It's a perfectly valid advantage and for any meaningful comparison you need to look at both cards at stock and both cards at max OC. And not by turning off a core feature of the GPU.