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What's the point if the voltage is still locked?

post #1 of 7
Thread Starter 
I've been looking at GTX 680s and reading up on the overclocking and voltage issues. I was going to get a Hydro Copper and I noticed one of the selling points is that it has 5 phase PWM (instead of 4) and 8+6 pin power connectors (instead of 6+6). But then I read some feedback from people who have the card and have been testing it, and it turns out the voltage won't go higher than 1.175V which is the same as the vanilla cards.

So why was there an extra phase and 2 pins added if you can't increase the voltage beyond what every other, non-watercooled card can do?
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post #2 of 7

Marketing would be my guess...

post #3 of 7
1.175v is still plentiful...

On my 560ti 448 classy that has 6 PWN, I'm afraid of going above 1.1v
Edited by wardoc22 - 4/16/12 at 9:00pm
post #4 of 7
Phase count has nothing to do with increased ability to deliver a higher total voltage, it has to do with delivering cleaner power and being able to provide slightly larger 'bursts' of power when suddenly needed. It's mainly marketing, but ostensibly a card w/more phases may OC a little bit better due to the aforementioned factors. The extra pins are probably there because the additional power phase makes it so the max possible current draw at the top voltage is like 305W instead of 295W ... so they had to add the pins to meet the 300W spec. Mind you, the spec is entirely based on 'electrical safety' protocols, it has nothing to do with performance.
    
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post #5 of 7
My 570 vs 680:

Stock VID: 570 = .987V, 680 = .987V
Max voltage without a bios flash: 570 = 1.1V, 680 = 1.175V
Voltage adjustments: 570 = Manual, 680 = Automatic and dynamic

What exactly is the problem again? More headroom than previous generations out of the box, and increased stability with the capability to adjust itself when required.
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post #6 of 7
Yup, the only significant thing that will raise the clock ceiling is the voltage increase. I don't care if you put 1400 phases and 500 power connectors on it, 1.175v cap will always be around 1300 MHz. The only significant bump you will ever see is when someone releases a card that can do upwards if 1.3v like the 7970. You could see cards around 1400+ MHz then.
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post #7 of 7
Thread Starter 
Exactly. Watercooling won't bring any better performance until the voltage can be upped. Hell, people can hit 1.175V right now on the stock air coolers.
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