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[Various] NVIDIA GeForce GTX 680 Review: Retaking The Performance Crown - Page 23

post #221 of 880
Well after spending a good couple hours reading I am relieved to know there is no need for me to have to upgrade/sidegrade.

I feel this is the same scenario as when 7970 launched. Card is nice and does well, low power and low heat. However for one that doesn't mind or care about some of those attributes for the money you can run a CF or SLI setup for cheaper still and hit same performance for the most part.

Damn good showing on NV's part and I have to say that I agree with the some who say NV has another single chip solution up it's sleeve possibly. For some reason it just feels a bit odd where this Kepler chip is hitting performance wise vs the Tahiti. I will add I don't particularly care for the 4-phase pwm setup controlled on the GTX 680 and it's another hint imo that more is to come.

The whole GPU Boost is kinda moot for now with minor delightful surprise, imo at least as only time will tell and show what its benefits are over their old standard especially for the oc'ing crowd.

Will surely keep an eye out and see how the market trends handle this stage that has been set. I in a way felt this generation might end up in a price fixing court case in a few years as has happened in the past, but we'll see. For some crazy notion I keep feeling like this was NV's mainstream performance part that exceeded their own expectations and are capitalizing on it. And please don't anyone take anything just spewed out of my keyboard to heart, this is all in my head. tongue.gif
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post #222 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.

That's what I thought, don't like this at all.
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post #223 of 880
Thread Starter 
Quote:
Originally Posted by Blameless View Post

Unless there is an identifiable bottleneck somewhere, scaling should be nearly linear, regardless of what clock speed something was supposedly designed for.
Maybe the lack of memory bandwidth, relative to the 7970, is beginning to show, or maybe the TDP limiter is throttling things, or maybe it's a combination of both.
Underclocked performance would need to be compared, or the limiter disabled, to tell for certain.

You nailed it with your last two posts. Scaling should indeed be linear if the bottleneck is in the overclocked pipeline. The bottleneck is elsewhere. I don't think it's the memory controllers since the bandwidth expensive raster operations seem to work in nVidia's favor. My guess would be that nVidia's superscalar design is the bottleneck here with 6 seperate ALU blocks per 2 warpers -- thread scheduling is therefore inefficient at higher clock speeds. Could be wrong though, but it would seem most likely to me at this moment.

EDIT:

Might also the issue of premature drivers. Could be that the data scheduling needs a fix for some apps.
Edited by TheBlademaster01 - 3/22/12 at 10:52am
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post #224 of 880
So GTX 680 is better for 5 FPS OC-ed in BF3 anyone know why are price in Europe way much higer it is 470€ in US is just 380€
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post #225 of 880
If AMD doesn't lower 7970 prices and any of the 680 aftermarket versions come with at least 3gb or more vram then I'm sold.
post #226 of 880
Quote:
Originally Posted by Cheeseburger View Post

If AMD doesn't lower 7970 prices and any of the 680 aftermarket versions come with at least 3gb or more vram then I'm sold.

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.
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post #227 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.
Overclocking was said to be normal, just that Boost won't help you if there's no max power-consumption room left.
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post #228 of 880
Well lets wait for AMD's reply.. the 7970 clocks higher definitely.. lets see what they pull out to counter this.. I for one like competition.. it allows normal people to buy stuff from their normal sized salary!!!
If i am stuck shelling out $500 every year for a new GPU i will go bankrupt!!
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post #229 of 880
Quote:
Originally Posted by mrcool63 View Post

Well lets wait for AMD's reply.. the 7970 clocks higher definitely.. lets see what they pull out to counter this.. I for one like competition.. it allows normal people to buy stuff from their normal sized salary!!!
If i am stuck shelling out $500 every year for a new GPU i will go bankrupt!!

680 already hit over 1800mhz ~ Kingpin did it yesterday
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post #230 of 880
Well after seeing the oc results I am less than impressed biggrin.gif
The 680 is a strong card and yeah it is def faster on stock clocks, but when the 7970 and 680 are oc'd there is roughly 6% difference between the 2.
Def not worth selling my 7970's and then buying 680's.

On a different note, if AMD announces a price cut of $100 (Which I doubt they will) They'll undercut the 680 and that means the rest of the range will follow suit. Good news for gamers, especially guys not buying in the top tier cards.
    
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