The NVIDIA GeForce GTX 780 Ti Reviewby Ryan Smith on November 7, 2013 9:01 AM EST
Meet The GeForce GTX 780 Ti
When it comes to the physical design and functionality of the GTX 780 Ti, to no surprise NVIDIA is sticking with what works. The design of the GTX Titan and its associated cooler have proven themselves twice over now between the GTX Titan and the GTX 780, so with only the slightest of changes this is what NVIDIA is going with for GTX 780 Ti, too. Consequently there’s very little new material to cover here, but we’ll quickly hit the high points before recapping the general design of what has now become the GTX 780 series.
The biggest change here is that GTX 780 Ti is the first NVIDIA launch product to feature the new B1 revision of their GK110 GPU. B1 has already been shipping for a couple of months now, so GTX 780 Ti isn’t the first card to get this new GPU. However while GTX Titan and GTX 780 products currently contain a mix of the old and new revisions as NVIDIA completes the change-over, GTX 780 Ti will be B1 (and only B1) right out the door.
As for what’s new for B1, NVIDIA is telling us that it’s a fairly tame revision of GK110. NVIDIA hasn’t made any significant changes to the GPU, rather they’ve merely gone in and fixed some errata that were in the earlier revision of GK110, and in the meantime tightened up the design and leakage just a bit to nudge power usage down, the latter of which is helpful for countering the greater power draw from lighting up the 15th and final SMX. Otherwise B1 doesn’t have any feature changes nor significant changes in its power characteristics relative to the previous revision, so it should be a fairly small footnote compared to GTX 780.
The other notable change coming with GTX 780 Ti is that NVIDIA has slightly adjusted the default temperature throttle point, increasing it from 80C to 83C. The difference in cooling efficiency itself will be trivial, but since NVIDIA is using the exact same fan curve on the GTX 780 Ti as they did the GTX 780, the higher temperature throttle effectively increases the card’s equilibrium point, and therefore the average fan speed under load. Or put another way, but letting it get a bit warmer the GTX 780 Ti will ramp up its fan a bit more and throttle a bit less, which should help offset the card’s increased power consumption while also keeping thermal throttling minimized.
|GeForce GTX 780 Series Temperature Targets|
|GTX 780 Ti Temp Target||GTX 780 Temp Target||GTX Titan Temp Target|
Moving on, since the design of the GTX 780 Ti is a near carbon copy of GTX 780, we’re essentially looking at GTX 780 with better specs and new trimmings. NVIDIA’s very effective (and still quite unique) metallic GTX Titan cooler is back, this time featuring black lettering and a black tinted window. As such GTX 780 Ti remains a 10.5” long card composed of a cast aluminum housing, a nickel-tipped heatsink, an aluminum baseplate, and a vapor chamber providing heat transfer between the GPU and the heatsink. The end result is the GTX 780 Ti is a quiet card despite the fact that it’s a 250W blower design, while still maintaining the solid feel and eye-catching design that NVIDIA has opted for with this generation of cards.
Drilling down, the PCB is also a re-use from GTX 780. It’s the same GK110 GPU mounted on the same PCB with the same 6+2 phase power design. This being despite the fact that GTX 780 Ti features faster 7GHz memory, indicating that NVIDIA was able to hit their higher memory speed targets without making any obvious changes to the PCB or memory trace layouts. Meanwhile the reuse of the power delivery subsystem is a reflection of the fact that GTX 780 Ti has the same 250W TDP limit as GTX 780 and GTX Titan, though unlike those two cards GTX 780 Ti will have the least headroom to spare and will come the closest to hitting it, due to the general uptick in power requirements from having 15 active SMXes. Finally, using the same PCB also means that GTX 780 has the same 6pin + 8pin power requirement and the same display I/O configuration of 2x DL-DVI, 1x HDMI, 1x DisplayPort 1.2.
On a final note, for custom cards NVIDIA won’t be allowing custom cards right off the bat – everything today will be a reference card – but with NVIDIA’s partners having already put together their custom GK110 designs for GTX 780, custom designs for GTX 780 Ti will come very quickly. Consequently, expect most (if not all of them) to be variants of their existing custom GTX 780 designs.
Post Your CommentPlease log in or sign up to comment.
View All Comments
TheJian - Thursday, November 7, 2013 - linkNot sure you're correct. If NV set 780TI at 95 degrees default how fast would it be going out of the box? 1200mhz-1300mhz (that's 30% free!) judging by Ocing with stock fans already as I noted in the previous post with all the site links and it never goes above 83 doing it. They overclock them and don't hit uber noise. So you can get all the perf from overclocking and SMASH the 290/290x but still be more quiet. I don't call that keeping up. AMD put out a good card, but it has lots of issues (heat/noise and blown away by stock overclocks from NV that won't drive you crazy with noise).
From the highest clock I saw so far (1304 at overclockers):
"On the GTX 780 Ti with the fan spinning at 100% locked in a chassis its not bad and will not wake your "neighbors" compared too the R9 290X."
So even at 100% nothing like 290x. :) I call that not competing too ;) How crappy is your fan/heatsink combo if you can't compare to a guy running 100%? Out of the box buyers for ref will be much happier with NV, not to mention all the features they have over AMD and 3 AAA games etc. You release a new card, while your competition just turns on some stuff they've disabled for a year waiting for you to catch them...LOL. On top, your card has "Variance" issues you are admitting you need to fix. You're running so close to crapout, they have been clocked at 669 in QUIET. That's UGLY right? Overclockers got 669 dips on quiet. How usable is that?
Da W - Thursday, November 7, 2013 - linkYou done masturbating yet?
DMCalloway - Thursday, November 7, 2013 - linkI think you under estimate just how 'happy' early gtx 780 adopters are with current pricing. For what they paid at launch they should've received a fully enabled chip. 7970ghz to r290x is a larger jump forward than gtx 780 to gtx 780Ti. We all remember what happened when AMD pushed their 7970 to the ghz. version in relation to the gtx 680. It's all relative except IMO Nvidia profits more for brand loyalty.
Galidou - Thursday, November 7, 2013 - linkIf nvidia would have enabled a full chip at 780 launch, imagine titan early adopter... We would have heard their anger far away in space...
Margalus - Friday, November 8, 2013 - linkpeople got exactly what they paid for when they bought it. There is no reason to be upset because a better card is no available.
Nevk - Thursday, November 7, 2013 - linkNvidia fanboyz erererer
grayson360 - Thursday, November 7, 2013 - linkIts so sad. I have a 780 and I basically only buy nvidia but that doesn't mean hate the competition. Any competition is good competition :D
OverclockedCeleron - Thursday, November 7, 2013 - linkTrolls be damned. 290X = Bulldozer? Really? I am growing sick of these PR reps who troll tech sites. And for the record, a properly-cooled "GHz" edition of the R290X will probably beat GTX 780 Ti in many scenarios and still be over $100 cheaper. Enjoy paying more for less :-).
1Angelreloaded - Thursday, November 7, 2013 - linkProbably not in this case, unless the 290x is fitted with a waterblock I don't see it happening. The problem is we will probably see triple slot vapor coolers like HOF galaxy which basically lends to the fact that multi GPU is a non possibility depending on your motherboard. Another thing is I would not put a 290x stock in a 350D or any other itx/matx solution case, between the thermals and the noise of the stock unit. I'm kinda excited for what Hawaii is, but also disappointed that this should have come out during the release of Nvidias 600 series not the end of 700 series cycle.
PsiAmp - Thursday, November 7, 2013 - linktomshardware tested Accelero Xtreme III with R9 290 and it made it nearly silent and very cool. Aslo had better performance.