[SOLVED] 600W Power Supply for 2080ti?

Sep 9, 2018
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Hi guys! Super quick question here: Can I drop a 2080ti into my system while keeping my 600W psu and still have it function ok? I was thinking of adding Gigabyte 2080ti Aorus, or the EVGA 2080ti Black.

Right now I have a 1080ti and it works great. The TDP on both cards are 250W, so I see no reason that my current power supply would need to be changed, however I see that many people recommend a minimum of 750W psu for the 2080ti. Is there something I am missing? Any help would be super appreciated

System:
Case: Louqe Ghost S1 (mini ITX)
Mobo: Asus Strix ROG Strix z390-i Gaming
CPU: i7-9700k @ stock
GPU: MSi 1080ti Armor @ Stock
Memory: GSkill Sniper X 32GB(2x16) 3600
PSU: Corsair SF600 80+ Gold
SSD: Samsung 860 Evo 1TB m.2

Note* Again, I was thinking about using the Gigabyte Aorus or EVGA Black 2080ti cards with no other changes to the system.
 
Sep 9, 2018
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Can draw ~300W under a torture load but, coupled with a 9700K at stock, it should be fine.
Even with the CPU drawing ~130W and the GPU drawing ~300 thats still well within the limit of 600W. I don't have any case fans, lighting or anything else drawing wattage because the case I have is fanless and lightless (tiny ITX case)

Cool I am pumped my psu should work, thanks for the quick response
 
Dec 6, 2018
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You can probably get away with it fine, you might want to consider upgrading to a good 750w eventually though in case you wanna add any addition fans or anything else that might draw power.
Having extra power at your disposal is never a bad thing :)
 

Barty1884

Titan
Moderator
Even with the CPU drawing ~130W and the GPU drawing ~300 thats still well within the limit of 600W. I don't have any case fans, lighting or anything else drawing wattage because the case I have is fanless and lightless (tiny ITX case)

Cool I am pumped my psu should work, thanks for the quick response
Yeah, the 9700K can draw ~130W, if not a little more at stock (despite it's 95W TDP), and a ~300W GPU. Add in the balance of the components that all have fairly negligible 12V power draw (RAM etc) and the 600W unit is fine.

The SF600 has a full 50A on the 12V rail, so under a torture load, you'd be running is ~80% of capacity.
Not ideal for efficiency, but on a Gold rated unit you're looking at 90% efficient at 50% load, 87% efficient at 100% load.... So worst case, you're drawing about 550W from the wall (vs about 530W if you were operating at peak efficiency).

You can probably get away with it fine, you might want to consider upgrading to a good 750w eventually though in case you wanna add any addition fans or anything else that might draw power.
Having extra power at your disposal is never a bad thing :)
Absolutely no need for a 750W unit in that build.
Regardless, I think the only 750W SFX units available are Platinum or Titanium and near $200.
 

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