Extremely dumb. Intel is never going to be able to compete if rebar is a must to get full performance. That is a requirement that is too heavily dependent upon third party mobo manufacturers, bios vendors, etc. And to the OP. If you don't currently have hardware that supports rebar, then why did you even turn it on? That might be your problem there.

that's why i post this topic, it's more efficent to see if someone experience the same thing then inventing the wheel again.
and about the hardware it's the onboard networl card refuse to start (error 10) which is kind of ironic after all it's intergrated.

still a external network card cost 80 euro's ain't a big deal it's just looks ugly to have a external card next to the graphics card.

they "claim" you can get a 15% performance boost which is unlikly works on all graphics cards so they say

Any performance boost is also game dependent, but most games will not care about reBAR at all as they've been designed with efficient texture streaming and mainly will rely on VRAM for storage. If you have a card with limited VRAM on the other hand, then you might indeed see a noticeable impact.