So I'm rocking 9900k, currently set up in 95W TDP, but that will be changed once the AIO arrives. 2 m.2 and 4 sticks of ram plus sound card. Planning on going with 2x Black Edition with NVLink instead of going with one FTW3, the idea is to put the hybrid coolers once they are in stock. Do I need to invest in bigger PSU ?

I'm running overclocked SLI 2080Ti's with a 7900X and iCue shows my AX1600i pulling 1,000 watts under load at times. I would not cut it that close for your system. Like Sajin said, get something with some headroom. 

Viper453

SprayingMango
I'm running overclocked SLI 2080Ti's with a 7900X and iCue shows my AX1600i pulling 1,000 watts under load at times. I would not cut it that close for your system. Like Sajin said, get something with some headroom. 

well you do have 15 case fans and a 10 core cpu

True but you still need more overhead regardless

I pull like 920+ watts with my 5960 @ 4.4 ghz & two 2080 ti's.

FWIW, I'm rocking a 1000W Platinum Seasonic (until I put in a new EVGA 1600 Titanium) that powers a 6950X at 4.4GHz, 8 sticks (64GB) of 3200MHz RAM (overclocked and overvolted), SLI'd 1080 Ti's at 2025MHz with a 500MHz VRAM OC, a PCIE SSD, a dual port 10GbE card, a RAID card, and eight 7200RPM WD Blacks.
 
No issues at all. That said, the 1000W PSU was there for a single card. For the long term health of your system it is a REALLY good idea to have power to spare, and will save on your power bill (efficiency drops at/near 100% PSU usage).

I might be cutting it pretty close with my 6 yr old 1200 watt :(

IDK I ran 6 video cards off a Seasonic 1000 Plat 4x 1070Ti and 2x 1080 Ti. Pulled close to 960 from the wall. In my main computer I had x 1080 Ti overclocked with a i7 7700K. barely drew 800. I think 1K PSU from a good brand is safe. Remember it loses 10% from the wall to your computer. So pulling 960 from the wall was actually 864 out of 1000.
 
With the voltage limit the RTX 2080 Ti only pulled 300watts. 2x is 600 and a CPU overclocked is 200. That leaves 200 for the rest of the system. You are more than safe.

thecow
IDK I ran 6 video cards off a Seasonic 1000 Plat 4x 1070Ti and 2x 1080 Ti. Pulled close to 960 from the wall. In my main computer I had x 1080 Ti overclocked with a i7 7700K. barely drew 800. I think 1K PSU from a good brand is safe. Remember it loses 10% from the wall to your computer. So pulling 960 from the wall was actually 864 out of 1000.
 
With the voltage limit the RTX 2080 Ti only pulled 300watts. 2x is 600 and a CPU overclocked is 200. That leaves 200 for the rest of the system. You are more than safe.

Its fine to run your mining rig at 80-90% and the lowered power efficiency considering you will hopefully recoup the cost of a burned out PSU and increased power bill.
Peak power efficiency is generally at around 50% load

Gamers Nexus reported under 1KW power draw on RTX Titan/2080ti in SLi also recently LTT in their video used 1KW PSU for SLi build with 2080ti's.

GGTV-Jon
 
 
Its fine to run your mining rig at 80-90% and the lowered power efficiency considering you will hopefully recoup the cost of a burned out PSU and increased power bill.
Peak power efficiency is generally at around 50% load

 

TheMadDutchDude
Nope... peak power efficiency is not true and is often for the majority of the range, not just 50%.

Sorry Mad but I'm with Jon on this one.  You usually get peak power efficiency around 50% and it gradually decreases from that range, plus or minus. 

bcavnaugh

Fredski
Gamers Nexus reported under 1KW power draw on RTX Titan/2080ti in SLi also recently LTT in their video used 1KW PSU for SLi build with 2080ti's.

You should post a link to your statement or comment.

 
https://youtu.be/4-fzflZAWME
 
https://youtu.be/sCfmM71NOTo

Hi guys. Thought I'd chime in with kinda the reverse problem. I've just bought the t2 1000w and am worried it is way to much for what I need. I got it because it was 40quid cheaper than the 850 I was looking at? Free next day delivery and all that. Can't find a way to list my pc specs so here they are. Hero xi mb. 9900k.Evga ftw3 1080ti. 1tb evo 970 m.2. 6x140mm fans. H100i v2 cooler. Sound blaster z. Rgb strips. K65 keyboard. G 502 mouse. 16gb3200cl14 ram. There's no harm to having to much wattage is there? I mean I could very well go sli at some point given the crazy price of the 2080ti. Wanted to change my trusty CS750M because I want to change my cabling a bit. Need 2 cpu cables to fill the 8 and 4 pin cpu socket on my board. Also wanted individual cables for my 1080ti instead of one cable splitting into 2. When I first used the cooler master calculator it gave me a draw of over 700w so figured a 1000w would be perfect. Every other calculator I've used since placing my order is giving me about 400w :-S typical. Also on scans website it says the only 2 psu that beat it are the 850 and 1600 versions? Is the 1000w inferior to those? Is that why it was cheaper? Thanks for any advice,Adam.

GGTV-Jon
The PSU will only draw / output what is needed, for the most part it is just going to idle along without working too hard.
 

GGTV-Jon
The PSU will only draw / output what is needed, for the most part it is just going to idle along without working too hard.
 

Good to know, some calculators are giving me a max load when oc'd as over 700w so I probably should be getting something better anyway. From the same seller the 850w was £230 and the 1000w was £189. So wnet with that one. Thanks. 

 The EVGA Black cards have a 280W power limit max.  Giving 25% headroom (350W each) that leaves 300W for the rest of the system.  
 
I don't think you'd have any issues.  

rjbarker

sgloux3470
 The EVGA Black cards have a 280W power limit max.  Giving 25% headroom (350W each) that leaves 300W for the rest of the system.  
 
I don't think you'd have any issues.  

Your forgetting about his power hungry 9900K .....OC'd.....add another 300w for an OC with vCore at 1.38v or so!!!
I just replaced an old AX 1200w with a new AX 1200i....but after realzing how power hungry my 9900K is OC'd (along with my 1080Ti's OC'd) and considering the best efficiency for a PSU is around 50-60% load (then it goes way down as it aproaches 80-95% load).....im going to swap out to an AX 1600i .......

Gaming won't max out the CPU though, it won't use much more than 100-150W.