3.FIVE (thats how you put emphasis on numbers ) and no problems with linkboost. although I think I have issues with heat. I mean, the chipset is SOO hot! the graphics card is SOO Hot! the overclocked CPU well, its frosty but, you can bet upwards of 100W of heat are hitting the air! this is a toasty system! Im gonna pick up some 120mm fans and build and ghetto mod a few of em to make sure all hot air is cleared quickly.