With one of these Altra CPUs (Q64-22), I can compile the Linux kernel (defconfig aarch64 with modules on GCC 15.1) in 3m8s with -j64
. Really great for compiling, and much lower power draw than any x86 system with a comparable core count. Idles at 68W full system power, pulls 130W when all cores are under full load. Pulling out some of my 4 RAM sticks can drive that down a lot more than you'd expect for just RAM. lm_sensors claims the "CPU Power" is 16W and 56W in those two situations.
Should be awful for gaming. It's possible to run x86 things with emulation, sure, but performance (especially single-thread) suffers a lot. I run a few containers where the performance hit really doesn't matter through qemu.
Ampere has a weird PCIe bug that results in either outright incompatibility or a video output filled with strange artifacts/distortion for the vast majority of GPUs, with the known good selection that aren't bugged being only a few select Nvidia ones. I don't happen to have any of those Nvidia cards but this workstation includes one. Other non-GPU PCIe things like NICs, NVMe, and SAS storage controllers work great, with tons of PCIe lanes.