I also think its quite poor that a computer starting at £1099, doesn't even come with a decent hard drive, its not 2005 anymore.
Your also still using a mobile graphics card. Will always be tradeoffs with using all-in-one computers due to size/space/heat restrictions.
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If that were the case I'd be typing this on a 2012 Mac Mini right now. But I couldn't buy one b/c it only has Intel graphics. I've been using Macs since 1988. To me the "experience" is not having an interface that gets in the way of my work. But in order to have a good experience my machines need to be able to keep up with software demands. So it's silly to say specs don't matter as a blanket statement.
I think he is saying for the average user spec's are not the determining factor. For the much smaller percentage of us power users/Pro's its more important.