Cirrus Logic CL-GD5428 80QC-A
Back in the day Cirrus Logic kept tuning it's chips and every iteration was a little better. Due to this differences between chips can be very small and sometimes they are even compatible with each other. In this case I have a Vesa Local Bus board with GD5428 chip, GD5904 BIOS chip and a PCB that identifies itself as CLVGA542xVL with FCC ID KDECIRRUS5426VL. The careful reader spotted 5426 in the FCCID!
Performance-wise it's practically identical to my other GL5428 VLB card.