Power, Temperature, & Noise

Last but certainly not least, we have our obligatory look at power, temperature, and noise. Next to price and performance of course, these are some of the most important aspects of a GPU, due in large part to the impact of noise. All things considered, a loud card is undesirable unless there’s a sufficiently good reason to ignore the noise.

It’s for that reason that GPU manufacturers also seek to keep power usage down, and under normal circumstances there’s a pretty clear relationship between power consumption, heat generated, and the amount of noise the fans will generate to remove that heat. At the same time however this is an area that NVIDIA is focusing on for Titan, as a premium product means they can use premium materials, going above and beyond what more traditional plastic cards can do for noise dampening.

GeForce GTX Titan Voltages
Titan Max Boost Titan Base Titan Idle
1.1625v 1.012v 0.875v

Stopping quickly to take a look at voltages, Titan’s peak stock voltage is at 1.162v, which correlates to its highest speed bin of 992MHz. As the clockspeeds go farther down these voltages drop, to a load low of 0.95v at 744MHz. This ends up being a bit less than the GTX 680 and most other desktop Kepler cards, which go up just a bit higher to 1.175v. Since NVIDIA is classifying 1.175v as an “overvoltage” on Titan, it looks like GK110 isn’t going to be quite as tolerant of voltages as GK104 was.

GeForce GTX Titan Average Clockspeeds
Max Boost Clock 992MHz
DiRT:S 992MHz
Shogun 2 966MHz
Hitman 992MHz
Sleeping Dogs 966MHz
Crysis 992MHz
Far Cry 3 979MHz
Battlefield 3 992MHz
Civilization V 979MHz

One thing we quickly notice about Titan is that thanks to GPU Boost 2 and the shift from what was primarily a power based boost system to a temperature based boost system is that Titan hits its maximum speed bin far more often and sustains it more often too, especially since there’s no longer a concept of a power target with Titan, and any power limits are based entirely by TDP.  Half of our games have an average clockspeed of 992MHz, or in other words never triggered a power or thermal condition that would require Titan to scale back its clockspeed. For the rest of our tests the worst clockspeed was all of 2 bins (26MHz) lower at 966MHz, with this being a mix of hitting both thermal and power limits.

On a side note, it’s worth pointing out that these are well in excess of NVIDIA’s official boost clock for Titan. With Titan boost bins being based almost entirely on temperature, the average boost speed for Titan is going to be more dependent on environment (intake) temperatures than GTX 680 was, so our numbers are almost certainly a bit higher than what one would see in a hotter environment.

Starting as always with a look at power, there’s nothing particularly out of the ordinary here. AMD and NVIDIA have become very good at managing idle power through power gating and other techniques, and as a result idle power has come down by leaps and bounds over the years. At this point we still typically see some correlation between die size and idle power, but that’s a few watts at best. So at 111W at the wall, Titan is up there with the best cards.

Moving on to our first load power measurement, as we’ve dropped Metro 2033 from our benchmark suite we’ve replaced it with Battlefield 3 as our game of choice for measuring peak gaming power consumption. BF3 is a difficult game to run, but overall it presents a rather typical power profile which of all the games in our benchmark suite makes it one of the best representatives.

In any case, as we can see Titan’s power consumption comes in below all of our multi-GPU configurations, but higher than any other single-GPU card. Titan’s 250W TDP is 55W higher than GTX 680’s 195W TDP, and with a 73W difference at the wall this isn’t too far off. A bit more surprising is that it’s drawing nearly 50W more than our 7970GE at the wall, given the fact that we know the 7970GE usually gets close to its TDP of 250W. At the same time since this is a live game benchmark, there are more factors than just the GPU in play. Generally speaking, the higher a card’s performance here, the harder the rest of the system will have to work to keep said card fed, which further increases power consumption at the wall.

Moving to Furmark our results keep the same order, but the gap between the GTX 680 and Titan widens, while the gap between Titan and the 7970GE narrows. Titan and the 7970GE shouldn’t be too far apart from each other in most situations due to their similar TDPs (even if NVIDIA and AMD TDPs aren’t calculated in quite the same way), so in a pure GPU power consumption scenario this is what we would expect to see.

Titan for its part is the traditional big NVIDIA GPU, and while NVIDIA does what they can to keep it in check, at the end of the day it’s still going to be among the more power hungry cards in our collection. Power consumption itself isn’t generally a problem with these high end cards so long as a system has the means to cool it and doesn’t generate much noise in doing so.

Moving on to temperatures, for a single card idle temperatures should be under 40C for anything with at least a decent cooler. Titan for its part is among the coolest at 30C; its large heatsink combined with its relatively low idle power consumption makes it easy to cool here.

Because Titan’s boost mechanisms are now temperature based, Titan’s temperatures are going to naturally gravitate towards its default temperature target of 80C as the card raises and lowers clockspeeds to maximize performance while keeping temperatures at or under that level. As a result just about any heavy load is going to see Titan within a couple of degrees of 80C, which makes for some very predictable results.

Looking at our other cards, while the various NVIDIA cards are still close in performance the 7970GE ends up being quite a bit cooler due to its open air cooler. This is typical of what we see with good open air coolers, though with NVIDIA’s temperature based boost system I’m left wondering if perhaps those days are numbered. So long as 80C is a safe temperature, there’s little reason not to gravitate towards it with a system like NVIDIA’s, regardless of the cooler used.

Load GPU Temperature - FurMark

With Furmark we see everything pull closer together as Titan holds fast at 80C while most of the other cards, especially the Radeons, rise in temperature. At this point Titan is clearly cooler than a GTX 680 SLI, 2C warmer than a single GTX 680, and still a good 10C warmer than our 7970GE.

Idle Noise Levels

Just as with the GTX 690, one of the things NVIDIA focused on was construction choices and materials to reduce noise generated. So long as you can keep noise down, then for the most part power consumption and temperatures don’t matter.

Simply looking at idle shows that NVIDIA is capable of delivering on their claims. 37.8dB is the quietest actively cooled high-end card we’ve measured yet, besting even the luxury GTX 690, and the also well-constructed GTX 680. Though really with the loudest setup being all of 40.5dB, none of these setups is anywhere near loud at idle.

It’s with load noise that we finally see the full payoff of Titan’s build quality. At 51dB it’s only marginally quieter than the GTX 680, but as we recall from our earlier power data, Titan is drawing nearly 70W more than GTX 680 at the wall. In other words, despite the fact that Titan is drawing significantly more power than GTX 680, it’s still as quiet as or quieter than the aforementioned card. This coupled with Titan’s already high performance is Titan’s true power in NVIDIA’s eyes; it’s not just fast, but despite its speed and despite its TDP it’s as quiet as any other blower based card out there, allowing them to get away with things such as Tiki and tri-SLI systems with reasonable noise levels.

Much like what we saw with temperatures under Furmark, noise under Furmark has our single-GPU cards bunching up. Titan goes up just enough to tie GTX 680 in our pathological scenario, meanwhile our multi-GPU cards start shooting up well past Titan, while the 7970GE jumps up to just shy of Titan. This is a worst case scenario, but it’s a good example of how GPU Boost 2.0’s temperature functionality means that Titan quite literally keeps its cool and thereby keeps its noise in check.

Of course we would be remiss to point out that in all these scenarios the open air cooled 7970GE is still quieter, and in our gaming scenario by actually by quite a bit. Not that Titan is loud, but it doesn’t compare to the 7970GE. Ultimately we get to the age old debate between blowers and open air coolers; open air coolers are generally quieter, but blowers allow for more flexibility with products, and are more lenient with cases with poor airflow.

Ultimately Titan is a blower so that NVIDIA can do concept PCs like Tiki, which is something an open air cooler would never be suitable for. For DIY builders the benefits may not be as pronounced, but this is also why NVIDIA is focusing so heavily on boutique systems where the space difference really matters. Whereas realistically speaking, AMD’s best blower-capable card is the vanilla 7970, a less power hungry but also much less powerful card.

Synthetics Final Thoughts
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  • chizow - Saturday, February 23, 2013 - link

    The usage is fine, as it's in reference to Nvidia's practice of overcharging it's customers with exorbitant price increases. That's usury.

    The "entitlement" comes from helping to build Nvidia from a rinky dink GPU company into the global factor it is today by spending a few thousand dollars every few years on their glorified gaming machines.

    The outrage comes from that company thinking it's OK to suddenly up the ante and charge you 2x as much for the same class and level of performance you'd expect from what you've paid every few years in an upgrade.

    It's obvious you've never bought into this market before, because you'd feel more invested in what has happened in the landscape of desktop GPUs since the 7970 launch and the rest of Kepler launch and understand what is happening here. I don't plan to buy it as most others I know who have bought in this range of GPU before, most of whom have similar sense of disappointment and disdain for Nvidia's Titan pricing strategy.

    As for the last bit...Nvidia has sold their 500+mm^2 ASIC GPUs for much less than even $500 in the past, hell the GTX 285 sold for as low as $330 and even the past GPUs with reported "terrible" yields like the GT200 and GF100 were sold for $500 in quarters where Nvidia still turned a profit. TSMC is charging slightly more per 300mm wafer at 28nm than previous nodes, but nothing close to the 100% premium being asked for with TITAN. So obviously they could sell it for less and still profit, they just chose not to.
    Reply
  • CeriseCogburn - Saturday, February 23, 2013 - link

    You're an IDIOT.

    nVidia sells these for THOUSANDS EACH, and production is LIMITED, you idiot gasbag fool.

    The fact that they spare a few dies for a grand shows they are being extremely generous with their profit potential and giving you sick ungrateful whining losers a big freaking break !

    But you're FAR TOO STUPID to know that. That's why nVidia has a REAL CEO and you're a crybaby whiner FOOL on the internet, who cannot think past his own insane $360 card budget, AND GETS IT 100% INCORRECT.

    When nVidia sells one of these limited production monsters to one of you whining ungrateful OWS crybaby losers for a $1000.00, they are LOSING A COUPLE GRAND IN PROFITS, YOU IDIOT !

    Have a nice, dumbed down, idiot crybaby loser day.
    Reply
  • chizow - Saturday, February 23, 2013 - link

    Production isn't limited, Nvidia and the article have shot that down from the outset, so please stop trying to use that as some "limited" production excuse.

    Nvidia will make as many of these as demand dictates, but they could've just as easily charged $300-400 less and sold untold magnitudes more GK110-based cards. That's the general impression I'm getting from all over the internet and from the circles of enthusiast I've encountered, anyways.

    Pricing these at $1K is like stealing candy from a retarded kid (you), but $600-$700 would be justified based on expected price and performance relative to previous generations and worth a look at 1 or even 2 for any enthusiast who purchased in the enthusiast range before and still allowed Nvidia to charge a premium for Kepler's overachieving performance numbers.
    Reply
  • CeriseCogburn - Sunday, February 24, 2013 - link

    No, they shot down the only 10,000 amd fanboy liar rumor, and claimed there will be "continuing availability".

    So you're a liar and a fool.
    Reply
  • chizow - Sunday, February 24, 2013 - link

    Exactly, you said these were "limited" when they are not, so you stand corrected.

    Looks like you're the liar and the fool, but why state the obvious?
    Reply
  • CeriseCogburn - Sunday, February 24, 2013 - link

    They are limited, production is NOT limitless, a gradeB skumbag fool who needs a clue from a real authority to use common sense (to paraphrase your prior stupid remark) would know that.

    nVidia CANNOT produce whatever demand is whenever demand goes over production capacity, and the price you want, you have implied it would.

    So go blow it out your tinfoil hat.
    Reply
  • chizow - Monday, February 25, 2013 - link

    Production is limited by demand with GK110, not some artificial "limited" production warranting the $1K price tag as you implied. But why state the obvious about the law of supply and demand?

    Please stop trying to cover your tracks with dishonesty, you were wrong to say Titan is limited when it was not, now move along.
    Reply
  • CeriseCogburn - Tuesday, February 26, 2013 - link

    Moving along would be you checking production capacity and the dates in question, of course instead you've gourd bolted reynolds wrap. Reply
  • CeriseCogburn - Saturday, February 23, 2013 - link

    Yes mlambert908, they are spoiled lying crybaby children.

    Thanks for being another sane voice in the wilderness.

    The crybabies need to become men and earn a living, so they stop embarrassing themselves. Not that they know or understand that, nor that they ever will, but it gets sickeningly redundant when they poo their diapers all over the place every time.

    How about they grow up, get to work, and buy a video card once without whining like spoiled brats for months on end over the evil overlords who just won't give them a huge break because... they demand it.

    Maybe the Illegal Usurper will start enforcing price controls for them in this crappy economic worldwide situation where ALL prices have been rising greatly for a number of years.

    Perhaps the fantasy world the brat fanboy crybabies live in is actually a sheltered virtual unreality absolutely separate from RL.

    Charlie D's slaves, with deranged fantasy brains, and like you said, one of the sickest cases of entitlement the world has ever seen.
    Reply
  • chizow - Saturday, February 23, 2013 - link

    It's funny that you keep mentioning Charlie D., your asinine rants make him look like a genius and a prophet. Reply

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