If you've spent any time on r/FPGA, r/hardware, or even r/ECE lately, you've probably noticed a pattern. Scroll through any post asking for project ideas and you'll find a dozen people saying they're building a RISC-V core. GitHub is flooded with them. Every second undergrad capstone seems to involve one. And honestly, a fair few of them raise a pretty reasonable question:
Are most of these people actually learning anything, or are they just vibing with ChatGPT until something compiles?
Short answer: both groups exist, and the split is pretty obvious once you know what to look for.
Why RISC-V Specifically?
It isn't random that RISC-V ate the academic world. There are solid structural reasons for it.
RISC-V is open source and incredibly well documented. The base ISA spec is readable. Like, actually readable by a human being. Compare that to x86, where the Intel SDM alone runs into thousands of pages, and the architecture carries decades of backward compatibility baggage that makes even simple things deeply confusing. ARM isn't much better on the accessibility front since it's proprietary, the docs are dense, and you aren't exactly encouraged to go implement it yourself.
MIPS used to fill this niche in universities, and it's fine, but it's also kind of boring and largely irrelevant outside of embedded legacy contexts. Nobody is rushing to make a new MIPS core in 2026. And making an Intel 8086 implementation? Come on. That's a museum piece.
RISC-V also scales beautifully as a learning tool. You can start with a basic RV32I pipeline, get it working, and then naturally layer on concepts like branch prediction, out of order execution, atomic operations, memory management units, and cache hierarchies. These are topics that typically show up in Masters level computer architecture courses, but RISC-V makes them approachable even at the undergrad level because the base is clean and the extensions are modular.
On top of all this, because so many people have already implemented RISC-V cores, there is a huge amount of reference RTL floating around publicly. When you get stuck, you can actually look at how someone else approached the same problem. That's genuinely valuable for learning.
The Problem: Most People Are Not Using It That Way
Here's where it gets uncomfortable.
A large chunk of RISC-V projects you see from students follow a pretty predictable path. Find a tutorial series or a YouTube playlist, copy the structure more or less wholesale, maybe swap a few variable names, slap it in a repo, and call it a CPU implementation. Or increasingly, prompt an LLM until it generates something that kind of works, then submit it.
The giveaway is always verification. Anyone who actually read the spec and implemented things carefully will have some form of testbench, some effort at verifying corner cases, some awareness of what the spec actually says about edge behavior. Most of the slop repos have none of that. They boot a hello world program and stop there.
This isn't entirely the students' fault. The availability of reference implementations cuts both ways. It makes it easy to learn from others when you're stuck, but it also makes it very easy to just copy without understanding anything. And the LLM situation has made this worse, because you can now get syntactically correct Verilog from a model that has been trained on all that publicly available RISC-V RTL.
So Is It Still Worth Doing?
Yes, genuinely, if you do it properly.
For anyone trying to build up knowledge from scratch in computer architecture, RTL design, HDLs, and FPGA implementation, RISC-V is probably the best vehicle available right now. The architecture is clean, the documentation is honest about what it is, and the community is large enough that you won't be completely alone when you hit a weird synthesis issue at 2am.
The path that actually teaches you something looks roughly like this: read the spec, implement a stage, write tests for that stage, break it intentionally and see what happens, then move on. It's slower. It's less Instagrammable. But you come out the other side actually understanding what a pipeline hazard is and why it matters.
The Research Paper Problem
One last thing worth calling out.
SoC implementations in research make sense. Custom extensions, domain specific accelerators, security focused designs, those are all legitimate research contributions that happen to use RISC-V as the base.
But there is a growing pile of papers that are essentially just "we analysed RISC-V" or "we evaluated RISC-V for X workload" that don't really add much. The architecture has been picked apart extensively at this point. Another performance analysis paper on a vanilla RV64GC core isn't moving the field forward. It's just riding the popularity wave with an academic coat of paint.
TL;DR: RISC-V is genuinely the best ISA to learn computer architecture on right now, for real structural reasons. But the flood of low effort implementations from students using AI or blindly following tutorials is real and pretty obvious. If you're going to build one, read the spec, write the tests, and actually verify your design. The popularity of it in serious research is also starting to get a bit inflated, though the core use cases remain solid.
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