Having read through this entire thread, I really think you would be MUCH better off with a gaming laptop. You can be 100% sure full system power draw will never exceeds the wattage of the AC Adapter and in the worst case where your breaker does trip, you still have the laptop battery so your system doesn’t randomly shut down. It will also be cheaper for a given performance level than hunting down the absolute most efficient parts for a custom ITX build. (Not to mention you don’t seem experienced at all with undervolting and BIOS tweaking which is essential to get the most perf per watt but also quite tricky to get things 100% stable)
But, because it’s a fun thought exercise, here’s what I would do:
- Avoid SFF, just go for a low powered mid form factor build.
- The cheapest RTX 4060 you can find with a dual fan cooler. I found that components consume a little less power the cooler they run, and larger heatsinks don’t add anything to your power budget.
- Ryzen 7 7700 limited to 50W PPT. Also with a large but affordable 120mm tower cooler on it (something from Thermaltake)
- the fastest RAM you can find that runs at 1.1V
- One single NVMe drive, each additional drive adds more to your power budget.
- extremely basic mATX motherboard (less frills means less power draw)
- the lowest powered platinum or titanium rated ATX PSU you can find (more efficient PSU = less power draw)
- some cheap mATX case, parts this low power don’t need high airflow or anything fancy like that.
- by using large coolers for low power hardware, you probably don’t even need case fans, saving yet a few more watts.
I promise you such a system will not exceed 200W from the wall event at full load giving plenty headroom for a normal 24 inch monitor and other periferals. I think you could even get away with a 4060Ti 16GB because 8GB RAM really is starting to suck for many use cases.
But, because it’s a fun thought exercise, here’s what I would do:
- Avoid SFF, just go for a low powered mid form factor build.
- The cheapest RTX 4060 you can find with a dual fan cooler. I found that components consume a little less power the cooler they run, and larger heatsinks don’t add anything to your power budget.
- Ryzen 7 7700 limited to 50W PPT. Also with a large but affordable 120mm tower cooler on it (something from Thermaltake)
- the fastest RAM you can find that runs at 1.1V
- One single NVMe drive, each additional drive adds more to your power budget.
- extremely basic mATX motherboard (less frills means less power draw)
- the lowest powered platinum or titanium rated ATX PSU you can find (more efficient PSU = less power draw)
- some cheap mATX case, parts this low power don’t need high airflow or anything fancy like that.
- by using large coolers for low power hardware, you probably don’t even need case fans, saving yet a few more watts.
I promise you such a system will not exceed 200W from the wall event at full load giving plenty headroom for a normal 24 inch monitor and other periferals. I think you could even get away with a 4060Ti 16GB because 8GB RAM really is starting to suck for many use cases.