2080 TI sli, PSU Question (850w)

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Martange
Licensed Customer
Posts: 25
Joined: Thu Jan 21, 2016 4:21 pm

Hi everyone,

I have a very good (Alienware) 850w psu and am looking to replace 2 x 1080 with 2 x 2080 TI.
Do you think it is enough or should I upgrade my psu before swapping the cards ?

Thanks
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Lewis
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Joined: Tue Feb 05, 2013 6:30 pm
Location: Croatia
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2080Ti has TDP of 260W and 1080Ti has 180W TDP so your difference will be 520W vs 360W (that's at peak but i find often that Octane is not using full TDP of GPUs but slightly less like 250W GPUs (liek 1080Ti) used 215-225W accordign to my measurments on UPS)
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Lewis
http://www.ram-studio.hr
Skype - lewis3d
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WS AMD TRPro 3955WX, 256GB RAM, Win10, 2 * RTX 4090, 1 * RTX 3090
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Antoncromas
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Posts: 43
Joined: Fri Oct 05, 2018 3:53 pm

You should be fine. My 3 1080 Tis pulling 450W according to my PSU read out on full load.
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