750w enough for 2 gpus

[_domdaly_]

I have a 750w psu and I want to watercool my system and have a second 1080ti.

My current specs:
Ryzen 7 1700x overclocked to 4ghz
16gb 3000mhz vengeance lpx
Aorus ax370 gaming k5
Evga Gtx 1080ti
Evga 750w psu

Will I have enough juice to watercool my machine aswell?

 

[Corwin65]

How would either of those fix a power issue.

Full system specs and an exact description of the issue will let us help you.

 

[_domdaly_]

How would either of those fix a power issue.

Full system specs and an exact description of the issue will let us help you.

Updated it

 

[geofelt]

Likely not.
http://www.realhardtechx.com/index_archivos/Page362.htm

What parts do you want to watercool? What do you expect to gain from watercooling?

Is this for gaming or mining?

What is your case?

For gaming, think carefully about sli.
Your gameplay may be better with one card.
You may win synthetic fps benchmarks, but
fewer games are supporting dual gpu.
dual gpu is prone to screen tearing and stuttering.

 

[_domdaly_]

Likely not.
http://www.realhardtechx.com/index_archivos/Page362.htm

What parts do you want to watercool? What do you expect to gain from watercooling?

Is this for gaming or mining?

What is your case?

For gaming, think carefully about sli.
Your gameplay may be better with one card.
You may win synthetic fps benchmarks, but
fewer games are supporting dual gpu.
dual gpu is prone to screen tearing and stuttering.

For gaming, and I wanted to watercool the whole machine.

 

[YoAndy]

Nope, 750w is not enough.

 

[geofelt]

Exactly what model of EVGA GTX1080ti do you have.
Some with waterblocks require two 8 pin connectors; that will possibly produce a peak of 375w each by themselves.

I might ask , if this is to be a "balls to the wall" gaming build, why are you not using a binned i7-8700K for the processor?

 

[_domdaly_]

Exactly what model of EVGA GTX1080ti do you have.
Some with waterblocks require two 8 pin connectors; that will possibly produce a peak of 375w each by themselves.

I might ask , if this is to be a "balls to the wall" gaming build, why are you not using a binned i7-8700K for the processor?

Gtx 1080ti SC black edition. Has a 6pin and 8 pin.

 

[geofelt]

That is 300w each.
Since you have the parts, you could try it and see.

Dual cards puts lots of pressure on your case cooling, so you might take the case covers off while you are trying it out.
Some EVGA power supplies are better than others and will have some reserve.
What is your model?

 

[_domdaly_]

That is 300w each.
Since you have the parts, you could try it and see.

Dual cards puts lots of pressure on your case cooling, so you might take the case covers off while you are trying it out.
Some EVGA power supplies are better than others and will have some reserve.
What is your model?

Evga 750 GQ.

 

[Zerk2012]

I would not run SLI with what you have.
If you can afford the price of anoutheer GTX 1080ti and liquid cooling then why try to pop your power supply.

 

[geofelt]

It all depends on the objective of the OP.

Some want a very top end competitive gamer.
Some want a well balanced gamer.
Others like "bling" and want led's and such.
Or, how about one upmanship?
dual gpu, water cooling, 16 thread processor for example.

If one has the budget, he/she can build whatever they want.

To answer the original question...
Changing from air cooling to water cooling places no different load on the PSU.
750w may or may not work well, but I see no harm in trying. The OP clearly has the funds to do whatever he wants.

How about adding a liquid cooled psu?
http://www.pcgamer.com/fsp-is-bringing-a-liquid-cooled-power-supply-to-computex/