Originally Posted by Hood
Because it's AMD. Intel systems let you designate RAM for iGPU but it's still available to the CPU as well. AMD, not so much. That's why Intel parts cost more and perform better, their architecture is much more efficient and evolved. AMD is all about the graphics, and if all you do is play games, that's fine. But if you want fast number crunching, Intel is far and away the better choice. If AMD doesn't get busy, the gap will widen after Haswell debuts next year. I like the new A10-5800K, it's a step in the right direction, but still falls way short on the computing side.
ill assume you got that info from a bad pdf translation or something.
anyway go into your bios look for a setting called memory gap, memory hole etc then make sure IGP is disabled and that pcix or pciE is set to the default video device at boot.