Oh? Do you have any examples? I ask because the BIOS should disable integrated automatically if you install a card. If that is not happening, I would blame the motherboard/BIOS, and not the CPU.
I note on this Gigabyte board, I initially was using my i7's graphics with W8 until my card arrived. After installing the card, a quick check in Device Manager shows only my card. If I want to use both integrated and my card, I have to go back into the BIOS and manually override the setting to re-enable integrated - and that's how it should work.
No Dig...I sure don't have any examples off hand...it's been awhile since I've seen a post like that. It's just from what I remember and it was quite some time ago as well. Maybe since BIOS updates and revisions of the mobo's, all might be OK.
Do you have the exact steps/procedures from you mobo on how to turn the onboad GPU of the CPU off.
I'm thinking of going Intel on my next build and I will be going with Gigabyte Mobo...
As I noted above, it should be automatic. But to be sure, I just checked the manual for my GA-Z77X-D3H board and as suspected, the BIOS options for "Internal Graphics" are:
So, if you leave the BIOS settings alone and you install a graphics card, the BIOS will automatically disable the on-board and boot to the card.
I've been using Intels on all my builds since the Core 2 Duo came out in 2006 with no regrets. And I mostly use Gigabyte boards too (though sometimes ASUS), also with no regrets.
As a whole line of products, Intel CPUs generally provide better performance while consuming less power and generating less heat - with a few exceptions, of course. That said, AMD makes excellent CPUs too so either can be used to form the foundation for a great, reliable computer.
Much is made about AMDs costing less - with folks saying you get more bang for you money. While that may be true, once you factor in the price of the motherboard, case, RAM, power supply, drives, keyboard/mouse, speakers, monitor(s), a "good" UPS with AVR, and OS, then stretch that over the life of the computer, IMO any difference in cost is a wash.