okay so i bought my self a gtx 570 (ASUS) And its not what i expected it to be , it's a 3 slot card its pretty big since it has 2 fans. But anyway , i tried to fit it in the first pci slot and it did not fit all the way in... but then i put it in the 2nd pci slot and it fit perfectly. im trying to find out if this is going to drop performance , i think every slot in the mac pro 1,1 is x16 but then its limited . im not sure , correct me if wrong. i need help asap . i ordered the last power cable for this on ebay , and i really wanna get full performance on windows. i know there is the slot utility thing , but does windows read that ? i mean everyslot can be x16 on windows right ? Ah its hard to explain let me summarize things up a bit. - Bought A BootCamp Gpu For My Mac Pro 1st GEN. - Found Out it does not fit in the first pci slot - worrying if it will lose performance in the 2nd pci slot. - Slot Utility Expansion Tool Says The 2nd slot is only 8x - The Card Is Obviously X16 - BUT! I am going to run windows. - Does Slot Utility Remember that it is in 8x slot? - Will windows Read it as it is in a full performance x16 slot in the 2nd pci express slot?? Please if you need more details , comment!