My understanding of it is that while the core design is common from Core Y through to Xeon, the way they are arranged on the package is completely different. With desktop chips, most Xeons don't have an iGPU included at all, though the mobile variants do have 'HD P630' graphics from what I can tell (I can't find any more info about these so I can't say whether they differ materially from regular UHD630).As far as I know, mobile Xeons are exact same chips as their consumer counterparts, just tested more extensively (as you say). Are you absolutely sure that "rejected" Xeons are discarded and not sold as i5 models instead?
As for the price... the official price for the Xeon E 2286M is just $40 over its spec-identical i9 counterpart. Apple's laptops are already priced on the higher end of the market, it wouldn't be a big cut into their margins, but the positive PR would be overwhelming. I really think that the yield is the major factor. After all, Apple mights not sell as many laptops as Dell or HP, but all MacBook Pros require expensive Intel CPUs. I would really like to see the statistics of where do all those i7s and i9s end up. I'd be surprised if Apple was not dominating that list in one way or another. The bottomline is that Apple's consumption of CPUs probably vastly outnumbers the amount of mobile Xeons Intel can push out.
Price wise, I did say that's not what Apple pay, but how Apple values it to the customer. They charge $300 more for an i7 over an i5 even though the cost differential to Apple is minimal with their bulk orders. They will charge more for a Xeon over an i9 because they can charge more for it, because people will pay it. Its value when inside an Apple computer is dictated by Apple, not Intel. The price differential for the i9 over the i7 is also $300, so I would expect at least the same again to go from an i9 to an equivalent Xeon, regardless of what the actual monetary value (or performance delta, assuming any) of the chip is.
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Unfortunately not, Apple seem insistent that if you want a 15" screen you must also want an i7-H, at least 16GB RAM and a dGPU. I'm holding out a tiny scrap of hope that if the 15" Pro survives after the 16" is introduced, it might be repositioned slightly lower (like the 13" formerly nTB model) - so it would start with a quad core i5-9300H, 8GB RAM, 555X (or even cheaper 550X?) for around $1,899-1,999. Leaving the higher end i9/32GB/Vega options for the newer/bigger model.Are there any solid rumors of a MBA 15"?
I'd definitely get it and hopefully we could build up to the 32GB ram.
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