Most of the people say you should get at least 600W, but some say 550W is plenty. Especially since this is a high quality PSU. Accordingly, is 550W enough for GTX 1080 Ti?
For the OP's system specs there, a 550W PSU is perfectly fine. The only way it would be pushed is with some very very heavy overclocking, like really big.
Subsequently, question is, what PSU should I get for 1080Ti? Minimum 600 W or greater system power supply with one 6-pin and one 8-pin PCI Express supplementary power connectors. Prior to unpacking your new NVIDIA GeForce GTX 1080 Ti graphics card, it is important to make sure you meet all the system requirements listed on page 4 for a smooth installation.
Also asked, how many watts does a 1080Ti need?
Nvidia GeForce GTX 1080 Ti - On your average system the card requires you to have a 600~650 Watts power supply unit. Nvidia GeForce GTX 1080 Ti SLI - On your average system the cards require you to have a 800~950 Watts power supply unit.
Can a 500W PSU run a 1080 TI?
If you have a 500W PSU already, and it is decent quality, it is easily enough for a 1080 Ti if you don't overclock heavily. 1080 Ti = 250 W, CPU = 65 W, everything else = 75 W. Total maximum is 390 W, which is well within the PSU's capability.
Related Question Answers
Is 600 watts enough for GTX 1080 Ti?
Well a single Card that can at most (from tests of my EVGA 1080Ti SC2 pulls around 250 Watts. 387 Watts Peak Use… You typically want 75% of Peak or 50% of Average for best performance so yes a 600 Watt is Plenty! Can a 550W PSU run a 2080ti?
550W is perfectly fine for your system. Your CPU only draws 65w and can't be overclocked, the GPU will draw less than 300W at full load. If you ever upgrade your CPU to something more powerful you'll probably want to up the PSU as well, but for now you'll be just fine. What games can 1080Ti run?
NVIDIA GTX 1080 Ti 4K benchmarks
| Game | GTX 1080 Ti (4K) | GTX 1080 Ti (1440p) |
| Gears of War 4 | 50.6 FPS average | 109.1 FPS average |
| Rise of the Tomb Raider | 60.04 FPS average | 113.1 FPSaverage |
| GTA V | 60.1 FPS average | 73.7 FPS average |
| PUBG | 34 FPS average | 68.9 FPS average |
Is 550W PSU good for gaming?
The fact of the matter is that most mid-range gaming PC builds can run on 450-600W PSUs, depending on the GPU, with a good deal of them landing ideal wattage around the 500-550W range. In a bout of irony, the PSU is, in fact, overkill for all of the hardware tested here. Is 550W PSU enough?
550 watt g2 is more than enough. It would have no issues running an overclocked 1080ti. You should be fine even with the CPU overclocked and a 1080ti. Spring for the 650W if you're going to get a decent one. How do I figure out my computer's power supply?
How do I calculate my PSU requirements? The best power supply for your PC build is the one that provides the right amount of wattage to all components simultaneously. Manually calculating this requires that you multiply the total amps of all components by the total volts of all components. Is 650 watts enough for GTX 1080 Ti?
Nvidia GeForce GTX 1080 Ti - On your average system the card requires you to have a 600~650 Watts power supply unit. Is 750W enough for GTX 1080 Ti?
750W is more than enough for a 1080 Ti and an i5, considerably more than enough. How much power does a RTX 2080 ti use?
NVIDIA RTX 2080 Ti: Minimum 650W. We recommend at least 800W. How many watts does a 3090 use?
350 watts
Is 450w enough for GTX 1080 Ti?
Your current PSU may be good, depending on what and how old it is. my current psu is 450w. Your PSU should probably be okay.. EVGA does recommend a minimum of a 600W unit for a GTX 1080 Ti iCX GAMING (if that's the one you're talking about) though, but it's just a general recommendation.. Does GTX 1080 Ti have DisplayPort?
At the rear of the 1080 Ti there are three DisplayPort 1.4 ports alongside an HDMI 2.0 port. You also get a DisplayPort to DVI adapter in the box – handy if you have a monitor that only accepts this standard. Does GTX 1080 Ti support SLI?
Didn't do SLI with a 1080Ti specifically, but ran a SLI config with 980s for some time. Totally not worth it - few games are bothering with support for SLI, and patches/drivers break frequently. How much VRAM does GTX 1080 have?
Power up. And, the Nvidia GeForce GTX 1080 has the horsepower to handle those ports. Coming jam packed with 2,560 CUDA cores, 160 texture units, 64 ROPs, 8GBs of Micron's latest GDDR5X VRAM, and a GPU boost clock running in at a comfortable 1,733 MHz, is there any wonder why the PC enthusiast community is so abuzz? Is 500W enough for RTX 2080 TI?
NVIDIA actually recommends a min 650 Watts PSU for the RTX 2080. Do not take any risk, even though you might not be facing any issues right now. Even if that's a very high quality 500 Watts PSU, then also I would still recommend you to upgrade the PSU. Is 500W enough for RTX 2080 Super?
Now if you are planning to use just the RTX 2080, then the 500W PSU should be sufficient enough. In cases where you are using SLI to connect multiple GPU's, only then will a higher PSU be needed. Is 500W PSU enough for Ryzen 5 3600?
I would consider a 500W PSU to be the minimum. But personally I would recommend getting a 600W to be on the safe side especially if you plan on overclocking. Is 500W power supply enough?
Most of these you can get new for about 40 dollars on Amazon is it a good deal or would 600-750 watt be more appropriate. 500W is plenty for the majority of builds. Unless you have a GTX 1080 ti, Vega 56/64, or an older high-end AMD card, it's almost always enough. Is 500W enough for overclocking?
Your 500w PSU should be enough to get you started into overclocking. Is 500W enough for 2070 Super?
Yes, it would be fine, if your planning on overclocking or upgrading the GPU in the future, it might be worth going for a 600W - 650W, I usually go for a PSU that has a decent margin. Is 500W enough for 1660 Super?
For the out of the box configuration, the GeForce GTX 1660 Super card power consumption is around 120 Watt under average load, so typically for a balanced system yes a 400 Watt power supply is enough. Is 500W PSU enough for GTX 1050 Ti?
Absolutely. A 450W power supply is enough even for the latest i5 combined with the GTX 1060, which consumes more power than the GTX 1050. Power Supply requirements are quite overrated. Even a 300W PSU can run mid-range hardware like the GTX 1050. 
