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[Official] GTX 580 Overclocking Club - Page 154

post #1531 of 3582
Quote:
Originally Posted by Kung Pow View Post
Yes, just for depictionary reasons.
But an 850w psu will be a much better choice for him... Cheaper too

Quote:
Originally Posted by Kung Pow View Post
Yes, just for depictionary reasons.
And a 1000W PSU is definately recommendable for his system.

GTX 580 SLI, 26K ?

Especially when overclocking is taken into account I think 1000W is the right choice.
Of course less would be sufficient but I do not think that one should aim for sufficiency regarding hardware performance especially when considering power requirements.
850w with overclocking is still more then enough...


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Edited by Eagle1337 - 9/12/11 at 1:06pm
post #1532 of 3582
I own a GTX 580 and therefore exactly know what it can pull especially when overclocked.

A GTX 580 SLI setup + 26K would be no problem to be managed by a 850W or even 750W PSU, yes no objection here.

But a rig doesn´t just contain of 2 cards and a CPU, you have to take into account further expansions, overclocking , heavy lighting, certain amounts of fans and harddrives etc etc ...it is mostly the little things that cause the ruccos
Believe me I have experienced it myself with the Extended Ascension

I am just saying that just because it is enough does not mean it is right.
If he buys a 850W PSU now he might be set for this situation but not for further or future additions.
Fore example what if he decides to add a third card?
Or if he wants to be a member of our club and get the most out of his cards and CPU^^?

I do not think a 750W or 850W PSU is optimal although they might be sufficient.
Many useres and forums including tests/reviews seem to think the same way.

In the end it will be his decision but I think spending 70$ more and be set for what´s to come is the better choice.
This theory might not apply to CPUs and GPUs but definately PSUs should be bought in that fashion since power cannot improve
Edited by Kung Pow - 9/12/11 at 1:16pm
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post #1533 of 3582
Third card wouldn't work but adding hdds and other pci/pci-e cards won't be an issue. So if he wants to add a bunch of hdds a sound card, and a bunch of ethernet cards he won't have an issue even with heavy overclocking.
Power is always improving; we are getting psus with better efficiency, tighter voltage regulation, and better ripple suppression...

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Edited by Eagle1337 - 9/12/11 at 1:19pm
post #1534 of 3582
Tighter voltage regulations and better ripple are power efficiency improving means.
Power itself is constant and cannot be improved, (Albert Einstein btw^^).

I see we are talking in cross purposes.

I don´t know how much experience you have gathered regarding this subject.
I am also not an expert on the matter but I do have experience considering power consumption ,GTX 580s , heavy overclocking and the frustration of losing several PSUs.

Which leads me to strongly recommend the purchase of a 1000W PSU for the desired setup for reasons already mentioned.

Let´s drop this please

Edit:Guys don´t forget to vote to the official poll thread!http://www.overclock.net/nvidia/1115...o-contest.html
Edited by Kung Pow - 9/12/11 at 1:32pm
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post #1535 of 3582
Quote:
Originally Posted by Kung Pow View Post
Tighter voltages and better ripple are power efficiency improving means.
Power itself is constant and cannot be improved, (Albert Einstein btw^^).

I see we are talking in cross purposes.

I don´t know how much experience you have gathered regarding this subject.
I am also not an expert on the matter but I do have experience considering power consumption and GTX 580s.

Which leads me to strongly recommend the purchase of a 1000W PSU for the desired setup for reasons already mentioned.

Let´s drop this please
Voltage regulation and ripple suppression has nothing to do with efficiency at all. Better ripple and better voltage regulation does provide better power to the computer. Having lets say 500mw on the 12v rail wouldprobably kill parts nearly instantaniously. I do know what I'm talking about here...
the mentioned reasons wouldn't kick wattage use over what an 850w can do, minus a third gpu.

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Edited by Eagle1337 - 9/12/11 at 1:38pm
post #1536 of 3582
There is no "better" power, power itself cannot be improved as it is a constant value, the things you mentioned are improving the power´s efficiency but at this point it does not matter anymore.

The question has been answered pages ago, l suggest we you drop it now and let the thread take its intended course.
If you would like to continue please do so via PM, we are too much off topic now.
Edited by Kung Pow - 9/12/11 at 2:09pm
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post #1537 of 3582
Efficiency is the ratio of power input to power output of a power supply. It is an indicator of power wasted by the conversion process from one voltage to another.

Voltage regulation, ripple suppression, and transient response are terms used to describe the ability of a power supply to maintain a voltage/current output close to its nominal output without variation or electrical noise. This can be referred to in general as electrical performance.

They are not the same thing.

Electrical performance and efficiency are, in fact, often at cross-purposes. It's very easy to make a very efficient power supply with terrible electrical performance; or a very well performing power supply with terrible efficiency. Achieving both goals requires engineering skill and expensive parts.

You should not conflate the two.
post #1538 of 3582
I was generalizing it.

The term efficiency has multiple purposes, but you are obviously the expert here Phaedrus2129 so I will have to agree with you
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post #1539 of 3582
Quote:
Originally Posted by Kung Pow View Post
I was generalizing it.

The term efficiency has multiple purposes, but you are obviously the expert here Phaedrus2129 so I will have to agree with you
Not in the context of power circuitry and electricity in general.
post #1540 of 3582
Ok agreed
Edited by Kung Pow - 9/12/11 at 3:20pm
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