Hi there. I am confused about how to connect a RTX 3090 on a Dell T5810. T5810 has a 450W power supply and there is not enough pin to connect 2x8pin on 3090. So, i am thinking of getting a secondary PSU, maybe a bequiet 750/850/1000W just for the GPU (with a way for future expansion to a 2nd GPU setup).
I understand that i need something like a ADD2PSU adapter to make sure the secondary PSU is also switched On to use the GPU. But, not sure about the PCIe connection.
Should i plug the 3090 to T5810 PCIex16 slot as usually and then connect the GPU’s 2x8pin from the bequiet PSU ? Does this mean the GPU would consume around 50-75W via the PCIe from T5810 primary PSU and the remaining 280-300W from the secondary bequiet PSU ?
Wouldn’t a dual PSU setup like this cause operational and performance issues as two different PSUs influencing the power draw of GPU ?
As Dell likes to use proprietary Mainboard connectors as well, he might not be able to power the board as there probably is no standard 24pin connector.
That’s why I stay far away from OEMs…vendor lock-in is real with PSU+Board+other components.
Thanks. The link provides info, but i couldn’t decipher how to split the 6-8 pin into a 2x8 pin as 3090 requires them.
Furthermore i can only find 625W PSU and rarely 850W PSU. Since my cpu is a E5-2680v4, i should definitely have a 1300W PSU to cover any transient loads. Unfortunately, i don’t see any 1300W available at the moment.
i get you. I do try to stay away, but when i got this t5810 it was too budget friendly to miss out.
Anyway, if this t5810 doesn’t work out, will it be useful to go with a Supermicro CSE-819u X10DRU-i+ ? I see it has enough pin outs to connect the GPUs? Though i guess the gpu size would be a problem. I have the SM server laying aroung for some time with 2x750W PSU.