AMD adds four GPUs to 500 series: Radeon RX 550, RX 540, 530 & 520
RX 540 Exists, here's the GPU-Z on it. : r/Amd
HP EliteBook 840 G5 · i7-8550U · AMD Radeon RX 540 · 14.0”, Full HD (1920 x 1080), IPS · 512GB SSD · 16GB DDR4, 2400 MHz · Windows 10 Home | LaptopMedia USA