Actually, integrated video chips are not very good except for entry level computer use
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Back in the day... This was sometimes true. (Emachines) Mostly because if on board video or sound went out you were out of luck. You had to get a new card or a new motherboard. Today these integrated parts rarely if ever break. Personally, we saw very few motherboard problems and when they did appear they rose up during the first few weeks of operation.
Today, it is well known that early onboard video and sound was not the best. But later models today are using the exact same video and sound driver chips that the off board cards are using.
Gamers, and power users love off board stuff. They do not want integrated anything. They tweak, twist, overclock and whatever they can to get more from less. Thus integrated anything carries a less desirable reputation.
However, for the every day user who could not care less about getting that final cpu cycle integrated motherboards are just fine.
As for which chips is better. AMD vs Intel.
This debate is a time tested custom. But,,
AMd became the chip of choice for gamers, tweakers and anyone else who wished to overclock. AMD was perceived to be sexy, exciting and cool. Intel became the least desirable because those chips were locked and generally not overclockable and was perceived to be stodgy, and restricting.
However, for Engineering aplications such as those used at Space Centers, government installations... Intel was the preferred CPU because of lesser crash problems associated with heavy floating point and other CPU intensive needs. Plus most of thier software was optimized for intel chips.
And finally
An example. When Doom 3 came out it was said that onyl the best of the best AMD machines could run it.. Hogwash. My plain old Dell P4 office machine with integrated everything ran it just fine.
And finally. This is important. Computer shops have different areas of expertise. Some techs are great with netowrks, some are great with installs, and some are great at general building tweaking. I was considered the win98 SE and M$ ACCESS guru. There is just too much to know and when you got really good at something a new OS would come out.. Very few are good at all of it. So, when you goto a shop,, and talk to someone who doesn't help, that does not mean he is a dummy, or the shop is incompetant, it usually means you didn't find the expert in that problem area.
That is why diagnostic tools are so very important..