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Do I need a new power supply?

Troyan

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Hey guys

Built a rig based on specs from here a couple of years ago. It currently has an RTX 2080Ti in it with an 850 watt supply. If I want to add an RTX 3080 Ti, will this PSU still work or do I need to get a bigger one?
 
Jerry James

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Hey guys

Built a rig based on specs from here a couple of years ago. It currently has an RTX 2080Ti in it with an 850 watt supply. If I want to add an RTX 3080 Ti, will this PSU still work or do I need to get a bigger one?
Depends on what you're doing and what else you're running on your system. Ideally, you'd want a 1000W PSU for the 3080 Ti only if you're also running something like a Core i9 12900K or 5950X. Otherwise, it should do just fine :)
 
Troyan

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Probably should have listed that. Core i9 Kaby Lake 3.6Khz. So I'd want to run the 2080 Ti and the 3080 Ti on the same system. Sounds like I need to upgrade the PSU. If I'm running both cards, do I need a 1200 watt?
 
Troyan

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I need to run 2 cards because I've recently discovered that it's problematic to run Redshift and Photoshop at the same time with a single card. Locks up Cinema 4D because they are both demanding dominance with the card. Plus I'd like a 2nd card card for more rendering power.
 
Jerry James

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Probably should have listed that. Core i9 Kaby Lake 3.6Khz. So I'd want to run the 2080 Ti and the 3080 Ti on the same system. Sounds like I need to upgrade the PSU. If I'm running both cards, do I need a 1200 watt?
I don't think Kaby Lake had a Core i9? :unsure: Could you list the CPU model? If you're on Intel's HEDT platform, the power requirements will be relatively higher than current consumer standards.
 
Troyan

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I have Speccy and that's what it's telling me.
 

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Jerry James

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I have Speccy and that's what it's telling me.
That doesn't seem quite right. Do you know how many cores you have? Should be visible in Task Manager.
 
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Jerry James

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Ah, a 9900K so Coffee Lake.
Well, from a power FOV, a 1200W should do the trick :) If you want to accommodate future releases or maybe add something like another 3080 Ti, can look into 1500W options. The price difference shouldn't be too major
 
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Interesting that it would tell me Kaby. Are you saying if I added a 3rd card to the same rig or if I replaced the 2080 Ti with the 3080 Ti I should look into 1500W?
 
Troyan

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I just ordered a 1200watt PSU and an RTX 3090. Hopefully I didn't just make a big mistake and that can power both the 2080Ti and the 3090.
 
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