The NVIDIA GeForce GTX 780 Ti Review
by Ryan Smith on November 7, 2013 9:01 AM ESTOverclocking
Finally, let’s spend a bit of time looking at the overclocking prospects for the GTX 780 Ti. Although GTX 780 Ti is now the fastest GK110 part, based on what we've seen with GTX 780 and GTX Titan there should still be some headroom to play with. Meanwhile there will also be the matter of memory overclocking, as 7GHz GDDR5 on a 384-bit bus presents us with a new baseline that we haven't seen before.
| GeForce GTX 780 Ti Overclocking | ||||
| Stock | Overclocked | |||
| Core Clock | 876MHz | 1026MHz | ||
| Boost Clock | 928MHz | 1078MHz | ||
| Max Boost Clock | 1020MHz | 1169MHz | ||
| Memory Clock | 7GHz | 7.6GHz | ||
| Max Voltage | 1.187v | 1.187v | ||
Overall our overclock for the GTX 780 Ti is a bit on the low side compared to the other GTX 780 cards we’ve seen in the past, but not immensely so. With a GPU overclock of 150MHz, we’re able to push the base clock and maximum boost clocks ahead by 17% and 14% respectively, which should further extend NVIDIA’s performance lead by a similar amount.
Meanwhile the inability to unlock a higher boost bin through overvolting is somewhat disappointing, as this is the first time we’ve seen this happen. To be clear here GTX 780 Ti does support overvolting – our card offers up to another 75mV of voltage – however on closer examination our card doesn’t have a higher bin within reach; 75mV isn’t enough to reach the next validated bin. Apparently this is something that can happen with the way NVIDIA bins their chips and implements overvolting, though this the first time we’ve seen a card actually suffer from this. The end result is that it limits our ability to boost at the highest bins, as we’d normally have a bin or two unlocked to further increase the maximum boost clock.
As for memory overclocking, we were able to squeeze out a bit more out of our 7GHz GDDR5, pushing our memory clock 600MHz (9%) higher to 7.6GHz. Memory overclocking is always something of a roll of the dice, so it’s not clear here whether this is average or not for a GK110 setup with 7GHz GDDR5. Given the general drawbacks of a wider memory bus we wouldn’t be surprised if this was average, but at the same time in practice GK110 cards haven’t shown themselves to be as memory bandwidth limited as GK104 cards. So 9%, though a smaller gain than what we’ve seen on other cards, should still provide GTX 780 Ti with enough to keep the overclocked GPU well fed.
Starting as always with power, temperatures, and noise, we can see that overclocking GTX 780 Ti further increases its power consumption, and to roughly the same degree as what we’ve seen with GTX 780 and GTX Titan in the past. With a maximum TDP of just 106% (265W) the change isn’t so much that the card’s power limit has been significantly lifted – as indicated by FurMark – but rather raising the temperature limit virtually eliminates temperature throttling and as such allows the card to more frequently stay at its highest, most power hungry boost bins.
Despite the 95C temperature target we use for overclocking, the GTX 780 Ti finds its new equilibrium point at 85C. The fan will ramp up long before it allows us to get into the 90s.
Given the power jump we saw with Crysis 3 the noise ramp up is surprisingly decent. A 3dB rise in noise is going to be noticeable, but even in these overclocked conditions it will avoid being an ear splitting change. To that end overclocking means we’re getting off of GK110’s standard noise efficiency curve just as it does for power, so the cost will almost always outpace the payoff on a relative basis.
Finally, looking at gaming performance the the overall performance gains for overclocking are generally consistent. Between our 6 games we see a 10-14% performance increase, all in excess of the memory overclock and closely tracking the GPU overclock. GTX 780 Ti is already the fastest single-GPU card, so this only further improves its performance lead. But it does so while cutting into whatever is above it, be it the games where the stock 290X has a lead, or multi-GPU setups such as the 7990.
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beck2448 - Tuesday, November 12, 2013 - link
They live in a dream world. Pros buy Nvidia 80% plus. That says everything about quality and reliability.Mondozai - Friday, December 13, 2013 - link
EJS, the buttboy for Nvidia, most sane people are non-fanboys.This means most people, including myself, skipped AMD the last few generations because they did a shitty job. We bought Nvidia hardware instead. Now, the roles will be changed with aftermarket coolers.
Also, please don't talk about mouthbreathers when you're literally chewing cowshit in your mouth everytime you're trying to say something. It stinks.
xdesire - Saturday, November 9, 2013 - link
You really don't know what you are talking about. Obviously, R9 290 holds great price/performance value but GTX 780 Ti has great OC potential out of the box. I'm afraid AMD shot themselves on their own foot with this reference coolerGrugtuck - Friday, November 8, 2013 - link
Any reason why the 900000000 pound gorilla in the room isnt mentioned here? 290x spanks the living **** out of the 780i in CF vs SLI. It makes me think that driver issues are still not fully sorted out.Ryan you sound like an absolute idiot when you say that no one is going to need SLI or CF any more. I also think its interesting how these days suddenly 60FPS is the standard to live by when it comes to FPS. I started playing PC games competitively back around 2002 and 80FPS has always been what people shot for, not 60. 60 is the bar min for acceptable smooth play, its not the optimal for competitive or serious FPShooter gaming.
lostsanityreturned - Saturday, November 9, 2013 - link
Hmmm I figured I would run a quick bench... my OCed 780 gigabyte with stock cooling gets the same average fps as their OCed 780ti in metro... 67fps 1440p high preset.I imagine it would be even higher if I uninstall comodo (which seems to drop my average fps by 5-14 frames just by being installed even if everything is disabled and profiles are set up correctly to ignore games, goes right back up if uninstalled though)
I hit 77degrees after my third run and it dropped back down to 75 soon after when the fans ramped up again, keeping in mind this is Western Australia I am in currently at 34 degrees (that is 94.2 Fahrenheit), all the windows open and no air-conditioning with an aircooled case.
It isn't even a demanding overclock +161 to core and +189 to memory... which considering I usually run it at +181 and +201 with ease and stability (I turned it down to see what the results were for an easy overclock as they didn't push their 780ti much)
I was feeling like crap about them releasing a new card just 4=5months after I got the 780... now... not so
sf101 - Saturday, November 9, 2013 - link
I think obviously people are just irate with Nvidia thinking they can charge premiums on everything and not just small premiums but they seem really set on this +750$ area pricing refusing to cut their customer base a break on the overpricing.So they drop down the 780 GTX to 500$ and everyone cheers "ignorantly" !!! Really its just a smoke screen because they knew the 290 and 290x were out performing their card while running on poor performing cooling units and yet it still has a $100 premium over the 290 which also out runs it pretty much everywhere.
Now down come's the 780TI pooping all over early adopters of the 780 and more so the titan buyers who thought they were getting a flagship card and foolishly paid $1000+ for them.
But its not all bad because heck man performance is performance and the 780ti is obviously needed to keep Nvidia in this race so we all look past its release but can't look past its premium pricing which is just another rip off of the customers @ 150$ over the competitor's pricing which closely competes at lower resolutions and fails to out perform @ 4k and in SLI/crossfire configurations.
Now all that would be just business as usual if Reviewer's were Educating about AMD's crossfire and high resolution performance wins over even the new and improved 780TI.
Instead they are quiet as a mouse to All AMD's Wins aside from pricing because well that's obvious and hard to ignore right. and rip AMD a new one over the downsides aka heat and noise which is totally justified and expected.
While for the nvidia side of things its all Christmas and Win's on the review reading in such a way that the 780ti wins in every category. failing to mention the Wattage use is getting up there as well as heat and fan noise, perhaps not up to 290x height's but much further than the GTX780.
All of these things have been pointed out on other review sites the good and the bad.
FuriousPop - Sunday, November 10, 2013 - link
lol, at the end of the day its all about target marketing.... excluding the fanboys of course. Fanboys = omg its better, faster, cooler oh oh i gotta have it. where as most normal people will analyse the cost of the GPU in relation to its performance to which if applicable to them would do other little upgrades to it/their case if need be, if it all still fits into the equation of how much to spend. etc etcdo your research, read lots of reviews, ask questions(if any) then purchase and don't look back. pretty simple.....
most of you all come here to rage and fire shots to either side (great entertainment btw) reminds me of that Halo Red Vs Blue. more like "fanboys - Red Vs Green" oh hey hey - why Red first eh eh!?
SymphonyX7 - Saturday, November 9, 2013 - link
Why exactly would I buy a GTX 780 Ti, when for a $100 more I can get TWO Radeon R9 290s in SLI and get twice the performance? The heat issue is there, but it ain't nothing an aftermarket cooler can't handle like the Accelero Xtreme 3.AMD wouldn't have flinched from the GTX 780 Ti's launch had it not been for their utterly terrible reference coolers.
SymphonyX7 - Saturday, November 9, 2013 - link
I meant Crossfire, not SLI. But you get the point. Have you seen those CF 290x vs SLI 780 Ti numbers? That's a ridiculous beatdown.TheinsanegamerN - Saturday, November 9, 2013 - link
you know, what i see from this, is that the 290x in uber mode is just as fast as the 780ti in most senarios, and is often a little faster. which should mean that the third party coolers that get slapped on these things should allow the 290x to soundly beat the 780ti. lets get the windforce 3x version of both these cards when they come out, and bench those for a more equal review.