7970 Overclocking with voltage control :o)

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Grooveriding

Grooveriding

Diamond Member
Dec 25, 2008
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Shamino did some single card 1700core 7970 runs.

7SzvZ.jpg


Just crazy numbers for the 7970. Can't wait for Monday and hearing how the average user's cards clock under air/water.
 
Madcatatlas

Madcatatlas

Golden Member
Feb 22, 2010
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Well.. how impressive are those scores really? could we get some screens of highly OCed 580 with the same type of cooling?
 
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Arkadrel

Diamond Member
Oct 19, 2010
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Madcatatlas said:
Well.. how impressive are those scores really? could we get some screens of highly OCed 580 with the same type of cooling?
Click to expand...


Here is a guy with a overclocked 2600k@4.7Ghz + 6990 @950/1450:
FirstOC.jpg





This isnt on LN, this is just to offer a compairison to above.
Below a guy with a overclocked 2600k, and 3x 580s in SLI.


http://hardforum.com/archive/index.php/t-1567233-p-3.html
New Score with 3 x eVGA GTX 580 Black Ops:
Click to expand...
Here is a guy with a SandyBridge and 3x 580 in SLI:
P15210.png
 
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Will Robinson

Will Robinson

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Dec 19, 2009
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Madcatatlas ok. im sold.
Click to expand...
Nicely put.:thumbsup:

I wonder if any of the hardcore NVDA fans will say that in this thread?:sneaky:

HD7970 really gives video card overclocking a shot in the arm.
It looks set to be a big sales hit.
I sure hope HD7950 is a strong performer....my 5850 is due for an honorable retirement.:)
 
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Arzachel

Senior member
Apr 7, 2011
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Kenmitch said:
You think he needs more CPU maybe? Wonder what the effect on the GPU score would be with less CPU power? Would be funny if he's CPU bottlenecked :)
Click to expand...

If I read that correctly, he said that the cards stopped scaling after 1530mhz core due to the cpu being a bottleneck.
 
Grooveriding

Grooveriding

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Dec 25, 2008
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Arzachel said:
If I read that correctly, he said that the cards stopped scaling after 1530mhz core due to the cpu being a bottleneck.
Click to expand...

He's got to be CPU bottlenecked.

4 7970s at 1530 = 32728

P32728.JPG


One 7970 at 1700 = 15063

7SzvZ.jpg


Same CPU/Clocks in both. 3DMark 11 shows near perfect scaling up to 3 cards in my experience, I don't know how a fourth card fares, but seeing one 7970 almost have half the score of four, I'm inclined to say CPU bottleneck.

Looks like there isn't a CPU around to feed all the power of those 7970s in Quadfire at those clocks.
 
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blackened23

Diamond Member
Jul 26, 2011
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Madcatatlas said:
Well.. how impressive are those scores really? could we get some screens of highly OCed 580 with the same type of cooling?
Click to expand...

For comparison, if I set my MSI lightnings 580s to single card I get roughly 8500~ in 3d mark 11. That is 950 GPU, 1900 shader, 2100 memory (HUGE overclock). Stock is 772 GPU.

Above a single 7970 is getting roughly 15k at 1700mhz GPU clock. I know these results aren't attainable for the average overclock, but those results are sick, they're exceeding most GTX 580 sli scores.
 
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videogames101

videogames101

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Aug 24, 2005
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I remember my HD4870 hitting nearly 50% OC on air, if this these cards go just as hard count me in. I also expect another 4870 -> 4890 deal looking a these numbers.

7970 -> 7990 around the kepler release anyone?
 
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badb0y

Diamond Member
Feb 22, 2010
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videogames101 said:
I remember my HD4870 hitting nearly 50% OC on air, if this these cards go just as hard count me in. I also expect another 4870 -> 4890 deal looking a these numbers.

7970 -> 7990 around the kepler release anyone?
Click to expand...
7990 is the dual GPU card. I would expect something more like 7980 lol.
 
Grooveriding

Grooveriding

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Dec 25, 2008
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:( Sad to see there are no custom cards in that wall of 7970 awesomeness.

7970 Lightning whereru ?
 
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Kenmitch

Diamond Member
Oct 10, 1999
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MrK6 said:
Just get on water already :p
Click to expand...

Yep....Gonna be hard to overclock these to their true potential and put more than one of them on a MB without going water cooling. Most aftermarket cooling solutions are gonna be pretty much single card solutions as most MB won't have enough spacing to keep the cards from butting heads :)
 
Elfear

Elfear

Diamond Member
May 30, 2004
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MrK6 said:
Just get on water already :p
Click to expand...

The hard decision lies in picking up a reference design which will allow the use of full-cover blocks or getting a non-reference with a better VRM and power delivery design but with a very small chance of being able to fit a full-cover block.

Anyone know if the full-cover blocks for the 6000 series cards worked with both reference and non-reference cards?

Edit: Just looked it up and EK has full-cover blocks for both reference and non-reference cards for the 6900 series. I imagine the blocks for the non-reference 7970's will become available at some point. Question is when?
 
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