NVIDIA GPUs Weren't Immune To Spectre Security Flaws Either (engadget.com)
Nvidia has became the latest chipmaker to release software patches for the Spectre microchip security threat, indicating that the chipset flaw was affecting graphic processors as well as CPUs. From a report: To that end, NVIDIA has detailed how its GPUs are affected by the speculative execution attacks and has started releasing updated drivers that tackle the issue. All its GeForce, Quadro, NVS, Tesla and GRID chips appear to be safe from Meltdown (aka variant 3 of the attacks), but are definitely susceptible to at least one version of Spectre (variant 1) and "potentially affected" by the other (variant 2). The new software mitigates the first Spectre flaw, but NVIDIA is promising future mitigations as well as eventual updates to address the second. Most of the updates are available now, although Tesla and GRID users will have to wait until late January.
Since all CPUs since 1995 are affected they're not, because that generation is slower now as well if you're running the latest updates.