The Stratix 10 SX has an onboard AArch64 ARM core, correct. Previous systems used ARMv7. Most FPGAs with a built-in system-on-chip you'll see have ARM cores att

The Stratix 10 SX has an onboard AArch64 ARM core, correct. Previous systems used ARMv7. Most FPGAs with a built-in system-on-chip you'll see have ARM cores attached, as well, such as Xilinx boards. Intel isn't unfamiliar with selling ARM chips, but in this case -- Intel acquired Altera, who did this originally. You can find one-or-two FPGA SoCs from Intel with actual x86 chips instead, though. But the idea is that the ARM cores normally just act as your "control plane" -- manage the FPGA, watch power usage, reload configurations, monitor & reporting metrics, etc etc. So they aren't the main attraction, of course. In the long run, Intel will be moving to discrete PCIe FPGA cards for data center usage, as well as fusing the FPGAs directly on-chip, alongside the Xeon cores for extremely high-end stuff. That's where you'll find products like Stratix 10 (aside from a few other places.) So in datacenter-oriented offerings, you may not see the ARM cores floating around that much.