Rainbowsix Siege Beta shows an odd VRAM display setting.
Rainbowsix Siege Beta shows an odd VRAM display setting.
I checked the available options and saw that the game assumed your graphics cards had 6GB of VRAM, yet you're using two 780 TI cards each with 3GB. This suggests Rainbowsix Siege might be able to combine or stack the VRAM from both cards.
It doesn't stack; it displays everything. Even with mirrored VRAM, the reported usage reflects actual data usage—so if it shows 4/6GB used, you're effectively using about 2/3GB per card, meaning roughly 4GB total, but only 2GB is being utilized.
They might benefit from updating it to clearly display the available VRAM.