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R7970 lightning vs R7970 Power edition

post #1 of 29
Thread Starter 
As soon as I can sell one of my 480's I'll be switching to the dark side. Haven't owned a ATI desktop card since the 3d rage era. (1995)

I'm curious to the actual differences between the cards mainly in the quality of the chip.

The differences between the two cards from what I can tell is

Lighting has fully unlocked voltage plus the "gpu reactor" along with a factory overclock.

So I'm curious if the Power edition card is a lower binned version of a lightning. I've looked around and as i post this there is ZERO info on the card.

I'm in no rush to upgrade as newegg has price raped the lightning to the 600 mark.

Thoughts?
post #2 of 29
The only difference is that the Lightning comes overclocked. Same PCB, VRMs, and cooler.
post #3 of 29
Thread Starter 
Quote:
Originally Posted by SimpleTech View Post

The only difference is that the Lightning comes overclocked. Same PCB, VRMs, and cooler.

My question was about the quality of the chip on each card. I was wondering if the lightnings tend to hit higher clocks vs the power edition.
post #4 of 29
Quote:
Originally Posted by wutang61 View Post


My question was about the quality of the chip on each card. I was wondering if the lightnings tend to hit higher clocks vs the power edition.


AFIK there are no differences in the chips.

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post #5 of 29
Hmmm their components also the same? Especially power phase?? I think Lightning series always have more power phase (in terms of chokes) than other type. About the chip I think its the same smile.gif
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post #6 of 29
Thread Starter 
Quote:
Originally Posted by neoroy View Post

Hmmm their components also the same? Especially power phase?? I think Lightning series always have more power phase (in terms of chokes) than other type. About the chip I think its the same smile.gif

Everything power delivery wise seems to be the same. The PE even has a back plate with "Lightning" inscribed on the back.

Like I said before only details I see missing from the PE compared to a lightning are no mention of the PCB add on or "gpu reactor" the lack of a factory overclock and unlocked voltage.

The PE is triple over voltage but it doesn't say if it is totally unlocked.

There isn't much information to sift through for solid answers. If the only differences are a factory overclock then it leads me to believe that the chip didn't make the "lightning" cut and was made into a "light" version of the card.
post #7 of 29
Hmmm I think if GPU reactor doesn't give any extra overclocking then I think its useless and better buy PE ... more cheaper but same performance, right?
But Lightning "should" be better performance than PE, only there is no proof yet. I am still looking for this information smile.gif
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post #8 of 29
Thread Starter 
Quote:
Originally Posted by neoroy View Post

Hmmm I think if GPU reactor doesn't give any extra overclocking then I think its useless and better buy PE ... more cheaper but same performance, right?
But Lightning "should" be better performance than PE, only there is no proof yet. I am still looking for this information smile.gif

The gpu reactors OC boosting ability really hasn't shined. Its helped one review with a oc of about 10mhz.

I really feel that it's aid will become clear at very high voltages for benching. I plan to bench the card at 1.35 on air to see where it goes. The reactor might be of some aid once the voltage is really pushed. All in all it is a gimmick tho for air or even water cooling but the way I see it.. It can't hurt right?

But a PE is 550 on newegg and a lightning is 556 on amazon. So easy choice for me.
post #9 of 29
Quote:
Originally Posted by wutang61 View Post

The gpu reactors OC boosting ability really hasn't shined. Its helped one review with a oc of about 10mhz.
I really feel that it's aid will become clear at very high voltages for benching. I plan to bench the card at 1.35 on air to see where it goes. The reactor might be of some aid once the voltage is really pushed. All in all it is a gimmick tho for air or even water cooling but the way I see it.. It can't hurt right?
But a PE is 550 on newegg and a lightning is 556 on amazon. So easy choice for me.

Only thing I've read that makes the gpu reactor seem worthwhile was that it seemed to help extend the OCP threshold at high clocks/volts, reported by one extreme bencher.
    
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post #10 of 29
@FtW 420, thx for your information thumb.gif
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