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In part, that's because they've had to run via emulation, a way of translating the X86 code into instructions that can be understood by the Arm processor. Qualcomm claims that performance won't be a problem for its upcoming Snapdragon X Elite processors and the PCs they run on. But the company also unveiled a pretty major caveat to that, too.
According to The Verge, Qualcomm executives told a Game Developer Conference audience that the company believes that most of the games in Steam's list of the most popular games should run at close to full speed on Snapdragon X Elite.
Qualcomm engineer Issam Khalil told the audience that game developers could port their games over to Arm, or they could create an Arm64EC app, a hybrid approach where Qualcomm's drivers run natively but the rest of the app is emulated. They could also just let Windows on Arm's emulation shoulder the load. Khalil said he believes most games are GPU-bound, meaning that the performance of the emulator won't have a big impact.
There are some problems, though. Games with kernel-level anti-cheat drivers simply won't work via emulation, as will games that use AVX instructions, Khalil said. The latter is the subject of a
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