An AMD Ryzen 7 5000G APU has surfaced on the web, with CPU-Z screenshots and everything. This ZEN3 desktop APU has eight Zen 3 cores with sixteen threads and an integrated Vega GPU. A product that AMD has yet to announce.

The results are posted by a Baidu user. The chip in question is an engineering sample, and likely a PRO revision. The Ryzen 7 Pro 5750G has been tested with an overclock of 4.8GHz at 1.47V. According to the user, this overclock was 'relatively stable'. He also tested 4.9GHz at 1.50V, although that turned out not to be stable enough. At 4.8GHz, the CPU achieved a CPU-Z single-core score of 660 points, with a multi-core result of 6898. This is comparable to the Ryzen 7 5800X, which also has eight Zen 3 cores with sixteen threads. The regular clock speed and an official turbo frequency of the Ryzen 7 Pro 5750G are not yet known. 

AMD has yet to officially announced these chips.

AMD Ryzen 7 Pro 5750G desktop apu doing rounds