> Both the Arc B580 and B570 are based on the "BMG-G21" a new monolithic silicon built on the TSMC 5 nm EUV process node. The silicon has a die-area of 272 mm², and a transistor count of 19.6 billion

https://www.techpowerup.com/review/intel-arc-b580-battlemage...

These numbers seem bit more believable