I calculate from pixel pitch.
8k = 806 ppi
5k+ = 537 ppi(5k is 490 ppi, so 9.7% increased, oculus go =538 ppi)
5k be = 518 ppi (vive 448 ppi, vive pro 615, so I don’t hope that this oled will look great like vive pro, acer mixed = 706 ppi)
my axon7 is around 538 ppi at 5.5" display, so I can assume some pixel size, but up to the lenses magnification too (very bad on daydream2, good on mojing s1 and great on wearality).