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[Various] NVIDIA GeForce GTX 680 Review: Retaking The Performance Crown - Page 24

post #231 of 880
Quote:
Originally Posted by dph314 View Post

680 already hit over 1800mhz ~ Kingpin did it yesterday

He used this: EVGA EPower Board
GTX680 cant Provide that much Power.
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post #232 of 880

Even both @1800, the 7970 will still pull ahead.
 

Quote:
Originally Posted by dph314 View Post


680 already hit over 1800mhz ~ Kingpin did it yesterday


 

 

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post #233 of 880
Quote:
Originally Posted by dph314 View Post

Overclocking was said to be normal, just that Boost won't help you if there's no max power-consumption room left.

From AnandTech:
Quote:
Finally, with the introduction of GPU Boost overclocking has been affected as well. Rather than directly controlling the core clock, overclocking is accomplished through the combined manipulation of the GPU Boost power target and the use of a GPU clock offset. Power target manipulation works almost exactly as you’d expect: you can lower and raise the GPU Boost power target by -30% to +32%, similar to how adjusting the PowerTune limit works on AMD cards. Increasing the power target allows the video card to pull more power, thereby allowing it to boost to higher steps than is normally possible (but no higher than the max step), while decreasing the power target keeps it from boosting at all.

The GPU offset meanwhile manipulates the steps themselves. By adjusting the GPU offset all of the GPU Boost steps are adjusted by roughly an equal amount, depending on what clocks the PLL driving the GPU can generate. E.G. a +100MHz offset clock would increase the 1st step to 1120MHz, etc up to the top step which would be increased to 1210MHz.

While each factor can be adjusted separately, it’s adjusting both factors together that truly unlock overclocking. Adjusting the GPU offset alone won’t achieve much if most workloads are limited by GPU Boost’s power target, and adjusting the power target alone won’t improve the performance of workloads that are already allowed to reach the highest step. By combining the two you can increase the GPU clock and at the same time increase the power target so that workloads are actually allowed to hit those new clocks.

On that note, overclocking utilities will be adding support for GPU Boost over the coming weeks. The first overclocking utility with support for GPU Boost is EVGA’s Precision X, the latest rendition of their Precision overclocking utility. NVIDIA supplied Precision X Beta 20 with our review samples, and as we understand it that will be made available shortly for GTX 680 buyers.
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post #234 of 880
Awesome card. I just wish the compute performance was up there. I don't think drivers are going to do much to improve that, it was obviously sacrificed for gaming performance. nVidia set out to deliver a gaming card, and boy did they deliver!

I would like to see how these things go with the power limit removed, and under water. At the moment it looks like the 680 and 7970 are fairly close when they are both OC'ed on air, I wonder if water will change anything.

Let the pricing war commence! AMD, how low can you go?


Quote:
Originally Posted by Mad Pistol View Post

I don't think 3GB of ram works on a 256-bit bus unless you mismatch certain ram chips. My guess is that the "extreme" versions of the GTX 680 will have 4GB of vram.

I'm going to say that that is a safe bet .... proof.gif
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post #235 of 880
Anyone think we might see a 7980 from AMD like we did with the 4 series? With a slightly better card they could easily overtake Nvidia this generation. Looking at the 7970 there is obviously a ton of room for improvement with how conservatively it is clocked. Those OC benchmarks really show just how slight the difference is. VR-Zone's review is interesting because with both card's OC'd the 7970 actually takes the majority of the tests.
    
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post #236 of 880
Quote:
Originally Posted by ZealotKi11er View Post

Yeah you can only OC the Boost. If for some reason the card uses too much power the Boost will downclock.

What youre saying is misleading. As part of the overclock process you should raise the power limit if you want to ensure your clocks arent restricted artificially.
post #237 of 880
Quote:
Originally Posted by Rubers View Post

Keep reassuring yourself that thumb.gif

lol you silly fanboy, you.
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post #238 of 880
Quote:
Originally Posted by Mad Pistol View Post

I don't think 3GB of ram works on a 256-bit bus unless you mismatch certain ram chips. My guess is that the "extreme" versions of the GTX 680 will have 4GB of vram.

There as another thread on here that had the an EVGA listed with 4GB.
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post #239 of 880
Its not inaccurate nor am I offended, but I think for the sake of professionalism the title of a combined review thread should not state an opinion.
post #240 of 880
Man, the fanboys are rabid!!!

I have to say that if you take the entire architecture into account, I think they have both made some great improvements. Kudos to green team for creating a GAMING monster, that leaves their usually power hungry and toasty stereotypes behind. I can't help but think however, that they new they did not have a card that that could best AMD without sacrificing all that computing power (and just stop with the driver stuff).

Then there is the red team, for creating quite a monster themselves, with extreme computing and gaming ability. At higher resolutions, it is quite a close race (unless your blinded from seeing green).
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