Sig rig update 680 vs 570 SLI question - Page 3

Quote:

Originally Posted by selluminis 

Yeah, but the quality of the corsair unit is good as well as the higher capacity for future upgrades.

I know, but it also costs more and it would probably be a waste of money because it has enough power to handle his system with three 680s in it (maybe even four).  Here's a GTX 680 3-way SLI review link on the power consumption page.  Not only that, but video cards are pulling less and less power with each new release.

For example, compare Guru3D's GTX 570 SLI results to their GTX 670 SLI results:

Their test system pulled 433W from the wall outlet which would mean that at 85% PSU efficiency, the system pulled about 368W.  Adding 200W again to consider the power draw of the rest of the system (including the CPU) brings it to an absolute maximum of 568W.  As before, adding 200W is like saying that you're maxing out everything that is being powered by the PSU, including hard drives, optical drives and fans.

Their GTX 570 SLI test resulted in a power draw that is 156W higher than this.  When only considering the power that's being pulled from the PSU, that's a difference of 123W.

So the next release of this variant will pull even less power.

Quote:

Originally Posted by OcSlave 

Hi,
I done some wattage testing on sli 570's using a plug in wattage meter, all tests' are from the wall;)

Quote:

Hi,
Thought i'd just share my findings as it is good solid proof of power requirements.
Wattage reading is took from a plug in reader that measures the power being sucked in from your wall so with my 80 bronze psu i will be using alittle less.
Have just started doing the test so i have only done my oc'd system, will do stock in a few min and then try some gamnes ect at oc and stock.

http://www.overclock.net/t/1185937/gtx-570-sli-wattage-testing
And a quick one with sli 670's
http://www.overclock.net/t/1256846/gtx670-sli-wattage-testing
Should help give you a rough idea of what cards use.

Can you multiply the "at the wall" readings by .85 and put them in your posts?

For example, the 570 SLI wattage readings would be:

641W x .85 = 544.85W

526W x .85 = 447.1W

658W x .85 = 559.3

892W x .85 = 758.2W

In case some of you are like "758.2?!?!", see his 570 SLI thread. 

The most realistic here is the first one.  Study his thread and you may notice why (I am very sleepy right now and I'm not as willing to put more effort into this like I usually am).

In other words, this seems to be showing that what I said in post #20 above is absolutely correct.    Remember, I said, "However, they used Furmark at its highest settings in order to get that 589W "at the wall" reading, so this means that in real world conditions, it would be very difficult to even reach even 650W of power being pulled from the PSU."  Yes, he got his system to pull 758.2W from his PSU, but that was OCCT's insane PSU test.

I think OcSlave's results show that with two 570s, even a high quality PSU that has the ability to continuously deliver 550W to your computer is enough.

In light of that, I'll put these here and then go get my sleep:

On PSU Efficiency

PSU "50% Load" Myth

Quote:

Originally Posted by OcSlave 

That's done Twocables.

Oh cool.  :)  One of the good things now is that you won't get questions every day asking how much your system pulled from the PSU.

Quote:

Originally Posted by OcSlave 


Sleep typing are we?

Quote:

In light of that, I'll put these here and then go get my sleep:

Yep!  I've been practicing!  From the looks of things, it looks like that practice paid off.  hehe