TechInsights Teardown (see below) shows that both vendors used many similar parts to optimize their investment in the next generation of gaming consoles.
Based on iFixit tear down I believe that the tear down has a minor error that would add about $3 to Xbox cost of manufacturing due to the 8GB EMMC NAND flash being used instead of:
"Xbox One also has 4GB eMMC NAND flash, making the non-volatile category US$3 higher for Xbox One"
"One interesting component is an 8GB chunk of eMMC NAND flash memory, the purpose of which Microsoft discussed last month with Eurogamer. In the words of Microsoft Technical Fellow Andrew Goossen:
We use it as a cache system-side to improve system response and again not disturb system performance on the titles running underneath. So what it does is that it makes our boot times faster when you're not coming out of the sleep mode—if you're doing the cold boot. It caches the operating system on there. It also caches system data on there while you're actually running the titles and when you have the snap applications running concurrently. It's so that we're not going and hitting the hard disk at the same time that the title is. All the game data is on the HDD. We wanted to be moving that head around and not worrying about the system coming in and monkeying with the head at an inopportune time.”
Insightful, timely, and accurate semiconductor consulting.
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