Both models
2700X and
3400G are based on
Zen+ architecture.
Zen+ is the second generation of Ryzen processors. It uses the 12nm process by GlobalFoundries. Other than that, the die is the same than first generation Zen. It comes with 64kB of L1 cache and 512kB of L2 cache per core. There are 3 variants: Pinnacle Ridge (desktop), Colfax (high-end desktop) and Picasso (APU).
Using the multithread performance as a reference, the 2700X gets a score of
433.2 k points while the 3400G gets
200.3 k points.
Summarizing, the
2700X is
2.2 times faster than the
3400G. To get a proper comparison between both models, take a look to the data shown below.