So I installed my new motherboard last night (Asus Maximus V GENE), along with a cooler I got last year on black friday, the Noctua NH-D14. The cooler is just massive, and it's hovering over the first PCI-E slot on the motherboard, making it unusable. So I had to put my GTX 680 in the 2nd PCI-E slot. Bare in mind this is a z77 motherboard and a sandy bridge processor, and on this particular motherboard the 2nd PCI-E slot will only run my GTX 680 at PCI-E 2.0 x8. Without really being able to properly bench (because the first slot is inaccessible), how much throughput am I losing by using PCI-E 2.0 x8 as opposed to x16 with this card? I'm already pretty sure I'm not doing it justice, but to be honest, my last motherboard (AsRock Extreme4 GEN3) was pretty shitty and I can't really tell the difference right now, and games are actually running better. I'm just wondering if I should leave things the way they are or seek another cooler. I really like this Noctua one though, as the same chip (i5 2500k) is running now at 28 to 30 C as opposed to 50 C with my previous cooler master one. (Same clock speeds, v is actually a little lower with this motherboard) Also, just to avoid it, I am already aware that the Noctua website says there might be complications with VGA Cards when using this particular motherboard, due the distance from the CPU socket to the first PCI-E slot. Any input or advice is appreciated, thanks.