I read a lot of reviews before purchasing this card...and was expecting only about a 20% or so performance boost over a GTX 1080.  I bought it...well...because I wanted it...not because I needed it! 
 
Using Folding @ Home as a platform benchmark, I'm seeing about a 60% performance boost over my 1080 FTW:
 
Titan X Pascal:
- Sustained Boost Clock: 1900 MHz (still has room to go)
- Folding PPD: 1.3 million
- Cooling: Stock cooler
 
EVGA 1080 FTW:
- Sustained Boost Clock: 2100 MHz (still has room to go)
- Folding PPD: 800 K
- Cooling: ACX 3.0
 
Using the Heaven Benchmark, I get about a 50% FPS performance increase in surround of 3 x 1920x1080 (5760 x 1080).
 
The 1080 if a great card, but the Titan X Pascal is fantastic. 
 
My 1080 is a good overclocker, and the Titan X is a great overclocker.  The card hits 1980 MHz as long as the temperature is under 60 C...and drops to 1900 MHz at it's final temperature of 79 C to 85 C.
 
Come on EVGA...give us the 1080 FTW and Titan X Pascal Hybrid Kits!!!!

I'm very impressed with the Titan X Pascal...is performing much better than I expected it to.
 
The only down side is the stock cooler is noisy and not good enough.
 
(It was Sajin that made me buy one!   ...you will buy one...they are more awesome than you know...you will buy one...)

How long did you fold with the Titan to get your - Folding PPD: 1.3 million
 
Was this a "snapshot" after a hour or two from the control panel (lower left corner) or sustained after several days ?
 
I do not see a link to your Folding

These are averages across a couple of days worth of production - work units completed...not the PPD estimates out of the Folding control app.  You probably already know that the PPD estimate is only good for the current work unit, against a given core, against a given project (different project numbers on the same core yield different PPD results...and core 0x18 are the worst.)
 
(i.e. looking through the log file and recording completed WUs...I wrote a program to automate this for me).
 
I increased the Titan X P overclock Wed evening...and this yielded a linear PPD increase with the overclock.
 
When I get home tonight, I can post some day-to-day results if interested (work units completed before or after the midnight crossover can skew the number up or down).
 
Folding Stats: 
http://folding.extremeoverclocking.com/user_summary.php?s=&u=693640
 
I'm currently folding with a Titan X P, 1080 FTW, 980 Ti Hybrid:
 
Averages over 2 days:
Titan X P: 1.2 million PPD
1080 FTW: 800 K PPD
980 Ti Hybrid: 675 K PPD
 
Recently replaced an EVGA 980 SC with the Titan X P.  Trading out the 980 SC for Titan X P gave an increase of about 900 K PPD...and the 980 SC averaged around 400 K PPD.
 
(It could be I just got a lucky batch of work units the past few days...shrug...I'm still happy!)

Cool GTX
Have you measured the Watts drawn between 980 SC and Titan upgrade ?

Yeah - it was an increase - but I don't remember how much.
 
Here's a data point I did record:
- Main rig is an i7-5820K (overclock of 4.3 GHz)
- For this data point, Titan XP was drawing 110% TDP, 980 Ti was 105% TDP, and processor was at 80 W
- This was pulling 775 W from the wall
- Power supply is gold rated 850 W EVGA G2...so figure 90% efficiency...
- This puts system power draw at about 697 W for this data point
 
Both the Titan XP and 980 Ti Hybrid are 250 W TDP cards.

Sajin
Gotta love that titan xp performance. 

 
Sitting with the purchase button waiting .....
 
Wish I could find a Discount "promo code" to use @ shop.nvidia.com   ---> or where Nvidia sells the open box returns for a discount.

Cool GTX

Sajin
Gotta love that titan xp performance. 

 
 
 
Sitting with the purchase button waiting .....
 
Wish I could find a Discount "promo code" to use @ shop.nvidia.com   ---> or where Nvidia sells the open box returns for a discount.

 
its about 70% faster than old titan x so it would be a good size upgrade. people say the ti may get skipped this series.

Nice
 
Thanks for the update

ksgnow2010
Do it man...hit the button...do it man...they are awesome you know...do it man...hit the button...

Nothing like some peer pressure

Cool GTX, let me be the devil on your other shoulder: don't do it!
 
You've got a great rig already, and we're only a few months from the next big thing. Hold on now, then splurge on the next big thing and you'll be all set!

AHowes
2 1080s will be awesome for either 1440 or 4k. A single Titan I hear is not enough for 60fps in 4k with everything maxed.

The Titan is only 20-30% faster then a 1080. If that's worth an extra $500+ then go for it.. but 2 1080s in sli will drag that Titan in any game that uses sli.

I think for now I'll grab a 1080 Hybrid(when I can find one in stock), as I really like the closed loop core cooler design, and play it safe with a single GPU for now, and hope if the 1080Ti comes out, it's within 3 months of now. (and not 91 days, as my luck would suggest)
I think the single 1080 will be beefy enough for single GPU 1440p gaming.. at least enough to keep framerates fluid. 
 
I would try and wait it out, but my frame rate in Elite on planetside in the SRV is terrible.. even at 60, the motion sickness is real. Hoping a HFR monitor will ease or alleviate that, coupled with a better GPU. 

sethleigh
Cool GTX, let me be the devil on your other shoulder: don't do it!
 
You've got a great rig already, and we're only a few months from the next big thing. Hold on now, then splurge on the next big thing and you'll be all set!

Exactly why my finger has yet to hit the buy it button
 
More of a want than a need ---> Hit 3M+ PPD Folding

What game doom?

ksgnow2010
Update to numbers...crunched 2 days worth of production...average production:
 
Titan X Pascal (1900 MHz GPU): 1,186,151 points (just shy of 1.2 million...not quite the 1.3 million of my original post)
1080 FTW (2100 MHz GPU): 799,598 points
 
So, the Titan X Pascal (overclocked) shows 48% more production than a 1080 FTW (overclocked).
 
Not too shabby!

( | V₁ - V₂ | / ((V₁ + V₂)/2) ) * 100 

= ( | 1186151 - 799598 | / ((1186151 + 799598)/2) ) * 100 
= ( | 386553 | / (1985749/2) ) * 100 
= ( 386553 / 992874.5 ) * 100 
= 0.389327 * 100 

= 38.9327% difference

Its strange how the titan xp is so much faster than the 1080 being 11 tflops vs 9 maybe its the memory bandwidth at 480 gb/s stock that add to the rest of the difference maker.