SeaSonic X750

[lambchops511]

I just wanted to confirm the SeaSonic X750 can support 2x GTX 580 with a Core i7 3770 without any OC.

Thanks.

 

[philipma1957]

I just wanted to confirm the SeaSonic X750 can support 2x GTX 580 with a Core i7 3770 without any OC.

Thanks.

yes i have run 3 hd7970s and a 2500k with the x660 model and no oc

 

[BonzaiDuck]

I just wanted to confirm the SeaSonic X750 can support 2x GTX 580 with a Core i7 3770 without any OC.

Thanks.

That should be the "Gold" 80-plus active-PFC. I have a couple of those.

One of them serves an OC'd (4.6Ghz) i7-2600K with a single GT/GTX 570. At idle, power-consumption can be around 150W. If it even pushed 300W+ under loaded conditions, there's more than enough leeway to double the graphics-card power-draw.

 

[lehtv]

It will handle them just fine.

This is measured at the wall with an i7-920 @ 3.33GHz (stock 2.66 / 125W TDP, versus 77W for i7-3770):

Your system should be under 600W at the wall, or under 550W DC.

 

[dkm777]

I tried GTX570 factory OC'd SLI paired with a 4GHz i7 980 on mine and it didn't blow up or anything. But I must say, I was scared for a moment.

 

[lambchops511]

It will handle them just fine.

This is measured at the wall with an i7-920 @ 3.33GHz (stock 2.66 / 125W TDP, versus 77W for i7-3770):

Your system should be under 600W at the wall, or under 550W DC.

Doesn't that mean it'll be cutting close? Also TDP and power draw are two different things. "125W" doesn't mean it draws 125W, it means it dissipates up to 125W of heat right?

 

[Kodongo]

Doesn't that mean it'll be cutting close?

Intel Core i7-920: TDP = 130W

Intel Core i7-3770K: TDP = 77W

I'm pretty sure you would only you're power supply to about 80% in a regular gaming situation, maybe 85%-90% in a synthetic test

 

[lehtv]

Doesn't that mean it'll be cutting close?

No... under 550W is under 73% of the PSU's full rating, and the X-750 happens to be capable of continuous 750W output

 

[lambchops511]

No... under 550W is under 73% of the PSU's full rating, and the X-750 happens to be capable of continuous 750W output

Why are you saying 550W? Under the graph doesn't it say 620W for 2x580 SLI? And wouldn't other applications be able to draw more than crysis?

 

[lehtv]

Why are you saying 550W? Under the graph doesn't it say 620W for 2x580 SLI?

As I said in my earlier post, the graph shows 620W at the wall (= AC power, not adjusted for efficiency) with a CPU that is twice as power hungry as a stock i7-3770.

And wouldn't other applications be able to draw more than crysis?

The graph represents power consumption during heavy gaming. Full GPU load is realistically the peak power consumption of your PC unless you stress it for the purpose of stability testing. Furmark, for instance, will make your GPUs consume much more power. But to avoid that, simply don't Furmark.

A high CPU load simultaneously with a high GPU load could increase power consumption as well, but this is a non issue given that your i7-3770 consumes a lot less power to begin with than the CPU used in the graph.

 

[lambchops511]

As I said in my earlier post, the graph shows 620W at the wall (= AC power, not adjusted for efficiency) with a CPU that is twice as power hungry as a stock i7-3770.



The graph represents power consumption during heavy gaming. Full GPU load is realistically the peak power consumption of your PC unless you stress it for the purpose of stability testing. Furmark, for instance, will make your GPUs consume much more power. But to avoid that, simply don't Furmark.

A high CPU load simultaneously with a high GPU load could increase power consumption as well, but this is a non issue given that your i7-3770 consumes a lot less power to begin with than the CPU used in the graph.

My concern is that I am actually not going to be gaming. I am going to be using it for custom CUDA app dev-ing. The memory controller will be stressed most certainly, as I am memory bound.

The CPU cores will be active as well.

 

[lehtv]

I don't know for sure what sort of power consumption to expect in CUDA and would be interested in finding out... but I doubt you will get Furmark-like power consumption. In your shoes I'd probably buy a kill-a-watt and find out.