PSU wattage for a system with both 3080 and 3090

[krate]

Hi

My current specs are as below

CPU: Intel Core i9-10900K
Motherboard: GIGABYTE Z490 AURUS ULTRA
Memory: G.Skill Trident Z Neo 32 GB (2 x 16 GB) DDR4-3600 CL16
Storage: Samsung 860 1TB 2.5"
Storage: Seagate Barracuda Compute 2 TB 3.5" 7200RPM
Case: Cooler Master Master case h500
Power Supply: 1000W cooler master rm1000
GPU : ZOTAC 3080

OS : Ubuntu 20.04 LTS

The system is strictly used for machine learning applications. I'm planning to add a Zotac 3090 to the existing configuration. Will the existing 1000W PSU be enough?? Also will there be any driver issues?

[rakkir 196]

no, 1000 watt will almost certainly not be enough. the 3000 series have a problem where they spike and draw way more power momentarily. if we assume this table budgeted 250w for the i9 and other system stuff then the cards need 600w of psu capacity each, they wont actually draw that much for very long but long enough to trip the over current protection. 600 * 2 + 250 = 1450 so i would say get a 1500W at least

Edited January 22, 2021 by rakkir 196
more detail

[krate]

1 hour ago, rakkir 196 said:

no, 1000 watt will almost certainly not be enough. the 3000 series have a problem where they spike and draw way more power momentarily. if we assume this table budgeted 250w for the i9 and other system stuff then the cards need 600w of psu capacity each, they wont actually draw that much for very long but long enough to trip the over current protection. 600 * 2 + 250 = 1450 so i would say get a 1500W at least

Thanks

[igormp]

4 hours ago, krate said:

Hi

My current specs are as below

CPU: Intel Core i9-10900K
Motherboard: GIGABYTE Z490 AURUS ULTRA
Memory: G.Skill Trident Z Neo 32 GB (2 x 16 GB) DDR4-3600 CL16
Storage: Samsung 860 1TB 2.5"
Storage: Seagate Barracuda Compute 2 TB 3.5" 7200RPM
Case: Cooler Master Master case h500
Power Supply: 1000W cooler master rm1000
GPU : ZOTAC 3080

OS : Ubuntu 20.04 LTS

The system is strictly used for machine learning applications. I'm planning to add a Zotac 3090 to the existing configuration. Will the existing 1000W PSU be enough??

If you manage to undervolt or limit the power of those cards (can be done through nvidia-smi), then yes.

 

Otherwise, no.

 

Quote

Also will there be any driver issues?

Nope, no need to worry about drivers

[Falkentyne]

On 1/22/2021 at 9:59 AM, krate said:

Hi

My current specs are as below

CPU: Intel Core i9-10900K
Motherboard: GIGABYTE Z490 AURUS ULTRA
Memory: G.Skill Trident Z Neo 32 GB (2 x 16 GB) DDR4-3600 CL16
Storage: Samsung 860 1TB 2.5"
Storage: Seagate Barracuda Compute 2 TB 3.5" 7200RPM
Case: Cooler Master Master case h500
Power Supply: 1000W cooler master rm1000
GPU : ZOTAC 3080

OS : Ubuntu 20.04 LTS

The system is strictly used for machine learning applications. I'm planning to add a Zotac 3090 to the existing configuration. Will the existing 1000W PSU be enough?? Also will there be any driver issues?

 

Just slap an AX1600i in it