How much improvement will I see on BF3?

Too be honest.

No.

3GHz is perfectly good enough on BF3 which is not all that CPU intensive game. With the exception to the 64player maps. You may see slight improvements. But not enough to warrant the price of the new processor.

You should reach medium atleast even before the new CPU.

With the new cpu you can play at medium and some setings on high. Let the game to automatic and he will set the setings.After that you can raise some of them to play smooth.

The 1090T can be driven to 4.0ghz depending on the motherboard

Lock 2 cores and try like 4.5ghz, might be possible on liquid cooling,
but in the end, its upto you, find out more about this.

What motherboard do you have? Judging by your current CPU and DDR2 ram your new X6 CPU is probably not compatible with your motherboard. EDIT: Atleast you likely need a BIOS update

I predict you will double your performance at least. Those who say bf3 is not cpu intensive are flat out wrong, they go off a scripted single player movie scene that became a popular benchmark on this website. Real benchmarks show 100 percent improvement from dual to quad, your gonna at least double. Post back tell us who's right  

my 560 with athlon x2 can not play any settings. I get 40 fps to 15 fps, very rapid spiking. fps is always the same no matter from ultra to low. In BF3 you can type a console command "render.perfoverlayvisible 1" and it will show you cpu and gpu usage. It is my cpu, always fully loaded, my gpu never gets the chance to go past 50 percent load.

"Too be honest.

No.

3GHz is perfectly good enough on BF3 which is not all that CPU intensive game."



Actually, bf3 is a pretty cpu intensive game, obviously it's more gpu bound. Nonetheless, you will see a massive improvement in bf3.