> From what I'm reading, Intel CPUs starting with Haswell have PCID and INVPCID > instructions which reduce the performance hit from the "fix". > > Ebay is about to get flooded with old pre-Haswell CPUs. > > I also recall reading somewhere that programs with a lot of I/O (like compiling) are > impacted much more by the fix.
I just downloaded and installed the Microsoft patch for Windows 7 but my motherboard hasn't received any firmware updates since 2014 so I'm fucked.