750W for 980TI G1 SLI

[actionzombie]

Can I use EVGA 750W to power 2 x 980 Ti G1?

 

[CTurbo]

No you would need a good 850w minimum and even that would be pushing it close

 

[clutchc]

+1^ 850W min.
Not saying it won't work on the 750W PSU, but you'll be taking it beyond its capacity when both cards are maxed out.

 

[actionzombie]

No you would need a good 850w minimum and even that would be pushing it close

Even though I am not OCing any of my parts? According to pcpartpicker, with everything that I have in my system, it will require 724W. But if you guys think I need 850W I am more incline to believe the community here than pcpartpicker.

 

[turkey3_scratch]

No you would need a good 850w minimum and even that would be pushing it close

Even though I am not OCing any of my parts? According to pcpartpicker, with everything that I have in my system, it will require 724W. But if you guys think I need 850W I am more incline to believe the community here than pcpartpicker.

Without OC, two 980Tis under a stress test are about 500W together. Plus rest of system, probably looking at 650W on a stress test. Gaming conditions, probably more like 500W.

 

[turkey3_scratch]

However, on the contrary, these Tomshardware graphs are not comforting, but keep in mind this is an OC GPU:

^^They claim it is GPU power draw, not system. Those torture bars are crazy. Look at the 970 up there.

 

[actionzombie]

No you would need a good 850w minimum and even that would be pushing it close

Even though I am not OCing any of my parts? According to pcpartpicker, with everything that I have in my system, it will require 724W. But if you guys think I need 850W I am more incline to believe the community here than pcpartpicker.

Without OC, two 980Tis under a stress test are about 500W together. Plus rest of system, probably looking at 650W on a stress test. Gaming conditions, probably more like 500W.

However, on the contrary, these Tomshardware graphs are not comforting, but keep in mind this is an OC GPU:

^^They claim it is GPU power draw, not system. Those torture bars are crazy. Look at the 970 up there.

I have 2 x Gigabyte 980 Ti G1 Gaming, so without OCing them any further, I should be ok?

 

[turkey3_scratch]

First off, what EVGA power supply is it?

Also:

These are Techpowerup measurements for your card. I'm not sure what the difference in "peak" and "maximum" is, although even "peak" is quiet high. It would be cutting it close. I agree, with these revealed graphs on your GPU: an 850W or higher is probably smartest.

 

[actionzombie]

First off, what EVGA power supply is it?

It's EVGA SuperNOVA 750W G2 80+ GOLD

 

[turkey3_scratch]

First off, what EVGA power supply is it?

It's EVGA SuperNOVA 750W G2 80+ GOLD

Great quality unit, but with those graphs above, I think it can be cutting it close. Normal gaming performance each GPU should be around 259W according to another graph. The EVGA 750W G2 more than likely can run past its rated wattage, probably up to near 800W until OCP or OPP kick in and shut it off. These thresholds are usually higher than rated amperage.

 

[actionzombie]

First off, what EVGA power supply is it?

It's EVGA SuperNOVA 750W G2 80+ GOLD

Great quality unit, but with those graphs above, I think it can be cutting it close. Normal gaming performance each GPU should be around 259W according to another graph. The EVGA 750W G2 more than likely can run past its rated wattage, probably up to near 800W until OCP or OPP kick in and shut it off. These thresholds are usually higher than rated amperage.

Thank you so much your knowledge! I will go ahead and order EVGA SuperNOVA 1000W G2.

 

[turkey3_scratch]

First off, what EVGA power supply is it?

It's EVGA SuperNOVA 750W G2 80+ GOLD

Great quality unit, but with those graphs above, I think it can be cutting it close. Normal gaming performance each GPU should be around 259W according to another graph. The EVGA 750W G2 more than likely can run past its rated wattage, probably up to near 800W until OCP or OPP kick in and shut it off. These thresholds are usually higher than rated amperage.

Thank you so much your knowledge! I will go ahead and order EVGA SuperNOVA 1000W G2.

You're welcome! It's just important to note that those really high 300W+ moments would be unrealistic in gaming situations, probably only be seen in extreme torture programs.

It's quite incredible how much more power a card that isn't reference draws than a reference card.

 

[actionzombie]

First off, what EVGA power supply is it?

It's EVGA SuperNOVA 750W G2 80+ GOLD

Great quality unit, but with those graphs above, I think it can be cutting it close. Normal gaming performance each GPU should be around 259W according to another graph. The EVGA 750W G2 more than likely can run past its rated wattage, probably up to near 800W until OCP or OPP kick in and shut it off. These thresholds are usually higher than rated amperage.

Thank you so much your knowledge! I will go ahead and order EVGA SuperNOVA 1000W G2.

You're welcome! It's just important to note that those really high 300W+ moments would be unrealistic in gaming situations, probably only be seen in extreme torture programs.

It's quite incredible how much more power a card that isn't reference draws than a reference card.

1000W should solve any doubts for my system.

 

[turkey3_scratch]

First off, what EVGA power supply is it?

It's EVGA SuperNOVA 750W G2 80+ GOLD

Great quality unit, but with those graphs above, I think it can be cutting it close. Normal gaming performance each GPU should be around 259W according to another graph. The EVGA 750W G2 more than likely can run past its rated wattage, probably up to near 800W until OCP or OPP kick in and shut it off. These thresholds are usually higher than rated amperage.

Thank you so much your knowledge! I will go ahead and order EVGA SuperNOVA 1000W G2.

You're welcome! It's just important to note that those really high 300W+ moments would be unrealistic in gaming situations, probably only be seen in extreme torture programs.

It's quite incredible how much more power a card that isn't reference draws than a reference card.

1000W should solve any doubts for my system.

True, and it'll be in the sweet spot for efficiency, so save some money on the EL bill.

 

[CTurbo]

I'm gonna go ahead and say it one more time just to avoid potential confusion for anybody they may come across this thread in the future.

I recommend a good 850w unit at least for 980ti SLI. 750w is just cutting it too close.