These are 12nm parts based on the Zen+ architecture and with Vega-based integrated graphics. For Zen 2-based APUs you'll have to wait until the next generation.
R 5 3400G 42/37
— APISAK (@TUM_APISAK) May 16, 2019
R 3 3200G 40/36
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R 5 3400G 42/37
— APISAK (@TUM_APISAK) May 16, 2019
R 3 3200G 40/36
????