The PNY Nvidia A40 3xDP 48GB graphics card from PNY is one option for you if you're upgrading your computer. The GDDR6 memory clocks in at 48 GB.
From Ecprof
TCSA40MPB - NVIDIA A40 Modul 48GB GDDR6
Scan
PNY NVIDIA A40 48GB Passive Ampere Graphics Card
Novatech
PNY NVIDIA A40 48GB GDDR6 ECC Data Centre GPU