11-27-2022, 11:52 PM
Theres no issues with building a cracking station with 2x 4090's. Everything you need to know is that cooling is important, build to be able to expand, and the rule of thumb is RAM=>VRAM.
I am currently using a setup involving 4x 3090's and have no issues, 4090's would be equally the same in space consumption and slightly higher power draw. 4x cards on a single 120VAC 20amp circuit, just do the math. 400-450W per card, 120VAC *20 = 2400 MAX Watts subtract 15% for extremities (PSU AC to DC conversion, breaker capacity relating to heat in the summer vrs winter, etc. etc.) leaves you with 2040W total wattage on that breaker. Using 220VAC would be more efficient however it isn't always accessible for everyone's scenario.
So 4x 450W 1800W Card consumption
Add 150W for CPU, HDD, MOBO
Add 150W for external cooling
And I am at my threshold.
As for cards, use your discretion, in my opinion closed loop liquid cooling is a lot more prone to failure than just a fan but that's only my opinion.
In regards to Marc1n, he is relating to renting cloud computing rather than creating your own crack station.
I am currently using a setup involving 4x 3090's and have no issues, 4090's would be equally the same in space consumption and slightly higher power draw. 4x cards on a single 120VAC 20amp circuit, just do the math. 400-450W per card, 120VAC *20 = 2400 MAX Watts subtract 15% for extremities (PSU AC to DC conversion, breaker capacity relating to heat in the summer vrs winter, etc. etc.) leaves you with 2040W total wattage on that breaker. Using 220VAC would be more efficient however it isn't always accessible for everyone's scenario.
So 4x 450W 1800W Card consumption
Add 150W for CPU, HDD, MOBO
Add 150W for external cooling
And I am at my threshold.
As for cards, use your discretion, in my opinion closed loop liquid cooling is a lot more prone to failure than just a fan but that's only my opinion.
In regards to Marc1n, he is relating to renting cloud computing rather than creating your own crack station.