One security issue I somehow missed back in July was Zenbleed, an issue with AMD CPUs that's getting patched up in the Linux kernel and now the Steam Deck is getting a kernel fix for it too.
Which is clearly not correct. Take a look at eg. this benchmark; many workloads take a sizeable hit. Even plain 'ol glibc sin and cos take about 8% longer, and the most pathological hit was the MariaDB workload which took almost 200% longer. Looks like many tasks related to math or heavy-duty string processing will be at least 10-20% slower, but it’s hard to say yet what this’ll do to games. I’d expect CPU-heavy games to be affected
From what I’ve seen the authors of the papers have listed the zenbleed mitigation impact as “statistically insignificant”.
Which is clearly not correct. Take a look at eg. this benchmark; many workloads take a sizeable hit. Even plain 'ol glibc
sinandcostake about 8% longer, and the most pathological hit was the MariaDB workload which took almost 200% longer. Looks like many tasks related to math or heavy-duty string processing will be at least 10-20% slower, but it’s hard to say yet what this’ll do to games. I’d expect CPU-heavy games to be affected