3090's draw 350W as per google. Arc a770 draws 225.
I guess people here normally go with a dual 3090 setup. That's 700 watt for 48gb of VRAM. This comes out to 14.58 watt per gigabyte of VRAM.
Lets assume you manage to cool properly, you could probably run 4 A770 for 64gb of VRAM which sounds pretty nice. This watt to VRAM gigabyte ratio is 14.06 which is actually better than the nvidia cards. Also noteworthy, the pins are 1x8 pin & a 1.6 pin if I'm reading correctly. So you would have to be careful what mobo you went with but I'm pretty sure that's doable.
It all comes down to driver support, but it could be a really nice rig that would you to run more complex models on the cheap. I'm not taking into account driver support which Nvidia obviously has an advantage in, this would affect the processing speeds of the A770. I would say however, the addition of cheap VRAM would probably be worth the extra processing times so long as things actually worked.
3090's draw 350W as per google. Arc a770 draws 225.
I guess people here normally go with a dual 3090 setup. That's 700 watt for 48gb of VRAM. This comes out to 14.58 watt per gigabyte of VRAM.
Lets assume you manage to cool properly, you could probably run 4 A770 for 64gb of VRAM which sounds pretty nice. This watt to VRAM gigabyte ratio is 14.06 which is actually better than the nvidia cards. Also noteworthy, the pins are 1x8 pin & a 1.6 pin if I'm reading correctly. So you would have to be careful what mobo you went with but I'm pretty sure that's doable.
It all comes down to driver support, but it could be a really nice rig that would you to run more complex models on the cheap. I'm not taking into account driver support which Nvidia obviously has an advantage in, this would affect the processing speeds of the A770. I would say however, the addition of cheap VRAM would probably be worth the extra processing times so long as things actually worked.