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Gigabyte GTX 670 OC Version *HANDS ON* - Page 46

post #451 of 1506
I looked up some old 5850 vs 5870 clock for clock comps that people may find interesting ...

I think this gives a decent idea of what to expect with 670 vs 680, given that it's another case where the only difference between cards is the disabled cluster in the chip. In the case of the 5870, it has 11.1% more shaders active. In the case of the 680, it has 14.3% more shaders.

Note the results of the clock for clock tests between the 5850 and 5870 ... the green bar shows how far the 5850 is behind the 5870 at equal clocks. It's never more than 6.1%, and it's usually around 2-3% behind.

408
Quote:
The default Radeon HD 5850 is an average 12.7% slower than the Radeon HD 5870 in the low-quality modes and 14.1% slower in the high-quality modes. When the frequencies of the Radeon HD 5850 are increased to the level of the HD 5870 (850/4800MHz), the gap is smaller at 2% and 2.6%.

If the AMD example is illustrative of the Kepler scenario, some quick math suggests we're going to find that 680 is only going to be around 3%-4% faster CFC on average across a range of benchmarks ... an amount that could be easily overcome by a randomly chosen 670 card (that happens to have a very high boost clock ... like the OP's) on any one randomly chosen test.

I have to say ... although the 690 has really caught my fancy ... the idea of waiting for the inevitable 670 4GB model and throwing a couple of those in SLI for probably slightly < $$$ as the 690 is starting to sound really good thumb.gif
Edited by brettjv - 5/7/12 at 9:57am
    
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post #452 of 1506
Quote:
Originally Posted by brettjv View Post

Dunno why so many people keep talking about nVidia having explaining to do, execs getting fired, or whatever. This is GIGABYTE'S doing, this is a non-ref card they created. The TweakTown 670 review (presumably w/an actual nV reference card) shows no such results as what we see on this thread.
If anyone has 'explaining' to do, I'd think it'd be Gigabyte, having to explain to nV why they made this card have so bloody much boost that it undermines ALL their partners ability to sell 680's.
And guys, I can pretty much guarantee you that the driver for the 670 and 680 are one and the same, because there's no reason whatsoever for the driver to act any different depending on which of these two cards is running. They're identical cards aside from a cluster being disabled in the 670's core, so the driver should be the same for both of them. If perf on one goes up, it will also go up on the other, IOW.
This entire 'discrepancy' we see has come about because GB has made a non-reference 670 that boosts to a higher max clock than the reference 680's. It's not nVidia's 'doing'. In fact, I bet they're pissed.

Thank you.
post #453 of 1506
EWWWWWWW BLUE PCB sad-smiley-002.gif
post #454 of 1506
Quote:
Originally Posted by OverClocker55 View Post

EWWWWWWW BLUE PCB sad-smiley-002.gif

I'm a little about astethetics in my rig. Unless I had blue on the mother board I wouldn't be happy. The perfomance and price though if can be confirmed on launch day is a very attractive offer to look beyond it but would be hard to gaze at inside the rig.

I've been spoiled with EVGA back plates. wink.gif
     
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post #455 of 1506
Is there a rumored or confirmed TDP yet? Would love to squeeze SLI out of my HX650.
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post #456 of 1506
So the x70 wins the price/performance crown. Nothing new here. smile.gif

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post #457 of 1506
Chris85, I removed your post ... the answer is NO, there's nothing to worry about. Let's keep it on-topic for this thread, it's already moving fast enough as it is, thanks!
    
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post #458 of 1506
Quote:
Originally Posted by Jayjr1105 View Post

Is there a rumored or confirmed TDP yet? Would love to squeeze SLI out of my HX650.

One of the sites that listed the POV labeled them as 175w, it was a reference shorty.
But there's no way to know if that was real or not, lol. It does sound about right though.
post #459 of 1506
Well, Nvidia now gives us two core clocks. A base one and a AVERAGE boost one.
It doesn't means that the turbo are limited by this second clock !!!

Today Nvidia cards are limited by thermals. Let's think about thermals:
Less shaders -> core colder. Core colder -> you can achieve higher dynamic clocks.

IF, and only IF, the software are less optimized to VGA's multicores, you shall gain performance with a lower shader, but higher clocked card.
Looking at this GTX 670 card I could say this: depending on software GTX 670 will be faster than GTX 680. It's all about thermals.. all about.
post #460 of 1506
Quote:
Originally Posted by VeryNoob View Post

Well, Nvidia now gives us two core clocks. A base one and a AVERAGE boost one.
It doesn't means that the turbo are limited by this second clock !!!
Today Nvidia cards are limited by thermals. Let's think about thermals:
Less shaders -> core colder. Core colder -> you can achieve higher dynamic clocks.
IF, and only IF, the software are less optimized to VGA's multicores, you shall gain performance with a lower shader, but higher clocked card.
Looking at this GTX 670 card I could say this: depending on software GTX 670 will be faster than GTX 680. It's all about thermals.. all about.

No, our 680s are limited by voltage, not heat. Now if we could increase the core voltage, this would likely be a different story.
Edited by svthomas - 5/7/12 at 11:33am
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