Corsair RM750x 2x GTX1080Ti mining

[Brian Furious]

Hello guys, I was wondering if my Corsair RMX750x can handle 2x GTX1080Ti for mining.

 

I have also an unused CX650 around but I wanted to run those GPUs with only 1 PSU. Keep in mind that I have a low TDP Intel Pentium G as CPU and its power consumption is really low.

[arnavvr]

What are the other components on your system? 

[Brian Furious]

Just now, arnavvr said:

What are the other components on your system? 

Intel Pentium G4400

1x 4GB ddr4

2x GTX1080Ti

1x 500GB HDD 2.5"

 

 

[arnavvr]

Just now, Brian Furious said:

Intel Pentium G4400

1x 4GB ddr4

2x GTX1080Ti

1x 500GB HDD 2.5"

 

 

You should be fine. I'd undervolt the CPU a bit though. 

[Brian Furious]

1 minute ago, arnavvr said:

You should be fine. I'd undervolt the CPU a bit though. 

The cards are supposed to run at 90% of their power limit

[Oshino Shinobu]

It's enough, GPUs aren't that power hungry now days. 

[FlatBrokeRacing]

A 750 will be near its limit with two 1080ti's.....

 

A single 1080ti can pull near 300w while mining depending on what you are mining and how you have it setup. For prolonged use you really dont want to push much more than 80% of a PSU's rated output. So IMHO if you underclock the cards and limit their power limit, you will be fine, but if your going for max performance you wont be fine.

[Brian Furious]

2 minutes ago, FlatBrokeRacing said:

A 750 will be near its limit with two 1080ti's.....

 

A single 1080ti can pull near 300w while mining depending on what you are mining and how you have it setup. For prolonged use you really dont want to push much more than 80% of a PSU's rated output. So IMHO if you underclock the cards and limit their power limit, you will be fine, but if your going for max performance you wont be fine.

If I will surely use them at 90% of their power limit. A single 1080Ti can't push 300watt even at 100% power limit even though if 2x would push 300watt they would consume 600watt which is 80% of my PSU. Isn't it good to run them 24/7?

[FlatBrokeRacing]

Just now, Brian Furious said:

If I will surely use them at 90% of their power limit. A single 1080Ti can't push 300watt even at 100% power limit even though if 2x would push 300watt they would consume 600watt which is 80% of my PSU. Isn't it good to run them 24/7?

yes a single 1080ti can push OVER 300w verified by a kill-o-watt meter.

 

and sure you are theoretically 600w on gpu plus another 60-80w for system power and you are over. my recommendation is an 850w but hey do as you please hope it works for you. 

[jamesman8]

10 minutes ago, FlatBrokeRacing said:

A 750 will be near its limit with two 1080ti's.....

 

A single 1080ti can pull near 300w while mining depending on what you are mining and how you have it setup. For prolonged use you really dont want to push much more than 80% of a PSU's rated output. So IMHO if you underclock the cards and limit their power limit, you will be fine, but if your going for max performance you wont be fine.

The 100% TDP of a 1080ti is 250W. 120% is 300W.

[FlatBrokeRacing]

not here to argue, just telling you what i've seen.

[Brian Furious]

10 minutes ago, jamesman8 said:

The 100% TDP of a 1080ti is 250W. 120% is 300W.

300Watt at 100% TDP looked strange a bit tbh indeed.

 

 

9 minutes ago, FlatBrokeRacing said:

not here to argue, just telling you what i've seen.

Yes no problem. At least I know I'm not going over 300watt per card, however once the cards arrive I can test them by myself with a kill-o-watt meter. I just didn't want to get back out my old CX650 to run 1 card.

[FlatBrokeRacing]

3 minutes ago, Brian Furious said:

300Watt at 100% TDP looked strange a bit tbh indeed.

 

 

Yes no problem. At least I know I'm not going over 300watt per card, however once the cards arrive I can test them by myself with a kill-o-watt meter. I just didn't want to get back out my old CX650 to run 1 card.

like i said you should be fine esp if you have them turned down abit. 

 

I'm not sure if they are rating that TDP including the PCI slot power included in that or not and i didnt specify 100%tdp, just my experience on the KOW meter, again dependent on what i'm mining. but 90% TDP dependant on what you have overclocks of memory/core set to should net you around 230w via 'software' watt reading. 

[Brian Furious]

1 minute ago, FlatBrokeRacing said:

like i said you should be fine esp if you have them turned down abit. 

 

I'm not sure if they are rating that TDP including the PCI slot power included in that or not, just my experience on the KOW meter, again dependant on what i'm mining. but 90% TDP dependant on what you have overclocks of memory/core set to should net you around 230w via 'software' watt reading. 

Thanks