Nvidia's entry into the AI PC market with its RTX Spark superchip last week is less a breakthrough for regular users than a high-stakes bet that a largely unproven concept can find wider appeal, ‌analysts said. It's a claim that PC makers HP and Dell have made for nearly three years now, only to be met with skepticism from Wall Street ​and consumers, with high prices outweighing tangible benefits. Nvidia, though, appears to be selling a different version of the AI PC than what exists today, one aimed more at developers and content creators who have long favored Apple's high-end MacBook Pros.