NVIDIA GeForce GTX 780 Review: The New High End
by Ryan Smith on May 23, 2013 9:00 AM ESTFar Cry 3
The next game in our benchmark suite is Far Cry 3, Ubisoft’s island-jungle action game. A lot like our other jungle game Crysis, Far Cry 3 can be quite tough on GPUs, especially with MSAA and improved alpha-to-coverage checking thrown into the mix. On the other hand it’s still a bit of a pig on the CPU side, and seemingly inexplicably we’ve found that it doesn’t play well with HyperThreading on our testbed, making this the only game we’ve ever had to disable HT for to maximize our framerates.
Moving on to the back-half of our games, we’re starting to hit the games that traditionally favor NVIDIA’s architectures over AMD’s. Case in point, the GTX 780 has a very solid 23% lead over the 7970GE. Meanwhile the Titan gap is once more around 10%, and this is another Title where the GTX 780 does particularly well relative to the GTX 580, clearing the last generation frontrunner by 77%. Far Cry 3 ends up being an excellent example of where the GTX 780 becomes a filler card; it cleanly fills the gap between the GTX 680 and GTX Titan.
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aidivn - Thursday, May 23, 2013 - link
so, how many Double Precision units are there in each SMX unit of gtx780? titan had 64 dp units in each of their SMX units which totaled to 896 dp unitsAnd can u turn them on or off from the forcewre driver menu like “CUDA – Double Precision” for gtx780?
Ryan Smith - Thursday, May 23, 2013 - link
Hardware wise this is GK110, so the 64 DP units are there. But most of them would be disabled to get the 1/24 FP64 rate.aidivn - Friday, May 24, 2013 - link
so how many are disabled and how many are enabled (numbers please)?Ryan Smith - Friday, May 24, 2013 - link
You would have only 1/8th enabled. So 8 per SMX are enabled, while the other 56 are disabled.aidivn - Saturday, May 25, 2013 - link
so, the GTX780 only has 96 DP units enabled while the GTX TITAN has 896 DP units enabled...thats a huge cut on double precisionDanNeely - Sunday, May 26, 2013 - link
That surprised me too. Previously the cards based on the G*100/110 cards were 1/8; this is a major hit vs the 580/480/280 series cards.Old_Fogie_Late_Bloomer - Thursday, May 23, 2013 - link
"GTX 780 on the other hand is a pure gaming/consumer part like the rest of the GeForce lineup, meaning NVIDIA has stripped it of Titan’s marquee compute feature: uncapped double precision (FP64) performance. As a result GTX 780 can offer 90% of GTX Titan’s gaming performance, but it can only offer a fraction of GTX Titan’s FP64 compute performance, topping out at 1/24th FP32 performance rather than 1/3rd like Titan."Seriously, this is just...it's asinine. Utterly asinine.
tipoo - Thursday, May 23, 2013 - link
Market segmentation is nothing new. The Titan really is a steal if you need DP, the next card up is 2400 dollars.Old_Fogie_Late_Bloomer - Thursday, May 23, 2013 - link
I'm well aware of the existence of market segmentation, but this is just ridiculous. Putting ECC RAM on professional cards is segmentation. Disabling otherwise functional features of hardware, most likely in the software drivers...that's just...ugh.SymphonyX7 - Thursday, May 23, 2013 - link
I just noticed that the Radeon HD 7970 Ghz Edition has been trouncing the GTX 680 in most of the benchmarks and trailing the GTX 680 in those benchmarks that traditionally favored Kepler. What the heck just happened? Didn't the review of the Radeon HD 7970 Ghz Edition say that it was basically tied with the GTX 680?