I wouldn't expect server/desktop/phone variants of RISC-V to drop any of the current extensions of the ISA. Why would you, if gate count isn't what you're optim

I wouldn't expect server/desktop/phone variants of RISC-V to drop any of the current extensions of the ISA. Why would you, if gate count isn't what you're optimising for? There could be further, more advanced extension that may not be in every processor, but that's just the same as x86 The modularity in the ISA as it is now, is something that's more geared towards embedded devices or FPGAs, where you'll be compiling code specifically for that target anyway.