For what you want to achieve it's a no-brainer to go with the -new- Titan X over the two 1070s.
For what you want to achieve it's a no-brainer to go with the -new- Titan X over the two 1070s.
The GP100 is a mixed-precision Cuda core and that is how you get double the FP16 Tflops to the FP32.
The dedicated 2xFP16 cores are on the 1080.
Cheers
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The 2xFP16 cores are not on the 1080, since it is a GP104.
The 1080 does have the 4xInt8 cores that are not present on the GP100.
Orion
Regular
The 480 can't achieve that at stock clocks because it's limited by its cooler and power. AIBs are hitting 1400 easy, and there are rumors of 1500+ cards. Whatever issues are with the current manufacturing process will likely improve over time, and they could fab elsewhere probably if need be.
All amd needs is a larger chip, and nvidia won't be able to offer performance difference to justify 1200$. They'll only be able to compete by lowering prices, if amd prices things reasonably.
RX 480 can be up to 30% faster than a 980 in some circumstances at 1440p, basically 980ti level of performance, you ain't seeing that with a 1060. At 1080p it can be within 30% of a 1080 in some circumstances.
This is the non OC reference version, 8GB versions of which can be had for 200$. The AIB, have higher clocks and will perform better.
Just to be clear, GP104-style SMs have 1 FP16x2 core per SM.
So you think AMD woudl forego increasing their margins given that they can match performance? I doubt it. Just look at Fury X introduction last year.
And 200 Dollar being the 4 GiB price without taxes? Unfortunately, where I live, even the reference 8 GB cards start at 270 EUR which roughly equals 299 US-$ atm. But then, R9 Nano is very expensive here to compared to other countries. Maybe I'm just out of luck.
Another thing: In the end of your argument you're comparing the overclocked AIB models from both vendors, right? Because everything else would just not make sense.
The AIB cards released so far haven't been very impressive, average factory OC is 1330mhz, and after tweaking around 1370 is the highest I've seen.
https://www.techpowerup.com/reviews/ASUS/RX_480_STRIX_OC/26.html
The factory overclocked Pascal cards on the other hand, depending on how high they clock out the box (assuming ~2ghz) can get another 5-10% performance depending on how high you can go and how much you can push the memory to complement the increased clocks. Sure, 5% isn't much, but 2100mhz on a 1060 is 400 mhz above 'stock' (~1700). Problem is you'll never find a card that actually boosts as low as 1731
Ah so it's one FP16x2 and not 2xFP16. GP100, on the other hand, doesn't have *dedicated* fp16 units, correct?
Just curious.
I know Nvidia clarified the situation with you about the use of the FP16x2 cores for GP104, did they also clarify if it was the same mixed-precision FP32/FP16 Cuda core only seen so far on the P100 but fixed in operation as FP16x2 or was it another unique type Cuda core?
Also, has there been any die shots of the GP100 or even GP104 (if it can be confirmed this is the mixed-precision core)?
Would be interesting seeing the size comparison of the older and newer Cuda cores.
If I remember you showed a die shot with one of the Maxwell 2 reviews/articles, wondering if you/anyone managed to get one this time.
Thanks
ImSpartacus
Regular
The same thing happened with the original Titan for like 6 months. I think Pascal is going to shake out sorta like the Kepler generation.
The first titan is partially disabled to serve as a halo product.
Then 6ish months later, that same gpu becomes fully enabled with higher clocks as the X80 Ti.
Then a few months after that, a refreshed titan drops with everything enabled, slightly higher clocks, still, and perhaps some kind of clamshell setup to get a truly egregious amount of vram.
So we've got 2016's titan now. I wouldn't be terribly surprised to see a 1080 Ti show up in a couple months to ruin Vega's day and then gp102 gets one more showing with 2017's Titan just to ensure that there's always a titan halo card in the lineup.
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If it were that simple no one would ask, and there aren't any $600 1080s out there. SLI doesn't "just work" like a single card does. There are lots of games which don't support it currently and some that never will. Your $1300-1400 investment then ends up performing like a single card OR WORSE. That doesn't sit well with everyone. In my situation an SLI setup becomes even more expensive because I water cool, so tack on another $160 or so per card and we're talking about a $1600-1750 solution that may be no better than the $650+ solution.
It still remains a valid dilemma, in case you have the budget to spend, to buy either the new Titan or a 1080 SLI.
DX12 has some new features like SFR that will ensure more games will be making use of multi GPUs.
Best option probably is to wait until a 1080Ti comes along having more performance and lower price, like what was the 780Ti compared to the first Titan.
Sorry my way of writing and getting lazy in this heat that caused confusion.
When Nvidia talk about mixed-precision for Pascal GP100 it is a single Cuda core that is FP32/FP16 (so FP16x2), and so gives the doubling of Tflops,the only other Cuda core is the FP64.
In theory this could also be done for FP64 Cuda cores if they overcome other limitations I think comes back to register-bandwidth, and maybe this is a capability of Volta.
The mixed-precision FP32 Cuda core development-evolution can be seen going back to Tegra X1 and for functions such as image recognition/Deep learning, scroll down to Double Speed FP16 : http://www.anandtech.com/show/8811/nvidia-tegra-x1-preview/2.
So it is debatable whether this is the same mixed-precision FP32 Cuda core from GP100 but fixed as FP16x2 operation, or another unique kind of Cuda core.
As it is there for compatibility reasons it seems, I would assume same as GP100 but this is Nvidia.
As Ryan mentions there is one of these cores per SM, which gives FP16 the FLOP rate ratio 1/64 and matches up with tests done by others, absolutely useless apart from compatibility testing and tbh not sure how many Cuda developers will consider this card even for that.
Cheers
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No confusion at all actually, the way I had understood it is that GP100 contained only two types of FPUs per SM; FP16/32 + FP64.
The FP16 capability of GP100 is attributable to their ability to pack two data into each 32b register, and two operands into each 'FP32' instruction, thus achieving double throughput (in theory). Now where I am a little confused, is what goes on in GP104; is there a pair of standard FP16 units ? The way it's been mentioned as a single "FP16x2" unit is confusing
Orion
Regular
Fury would depend on the cost of HBM. But by reasonable I mean 600-700$ for single gpu cards. AMD needs to undercut to increase marketshare. Given identical performance and price, nvidia is likelier to be chosen given their very good market perception.
Some of the 200$ 4 GB are actually 8GB cards, just check if they've got an 8GB under the 4GB sticker and change bios.
As for AIB, some have reached over 1400Mhz, and I've read rumors some might come at over 1500Mhz.
5-10% won't be able to reach 980ti levels for the OC 1060 in any circumstance, or will it? The non OC 480 is 980ti performance in some circumstances, and the OC version if it reaches 1400 or 1500+ should be noticeably above 980ti in some circumstances.
It is also said that TVs might be getting freesync in the near future, if that does happen, you will have a reasonable latency 4k HDR premium display of 50+ inches, exclusively for amd cards as nvidia doesn't seem to be supporting free open standards. For those who game on htpcs, that's going to be a big deal imho[especially come vega].
D
Deleted member 2197
Guest
Do you have a link? All reviews so far of custom 480 cards have not broken 1400Mhz for a stable benchmark. It's possible in the future under water but have not seen any on air.
DavidGraham
Veteran
Please define "some circumstances", you are actually saying R480 can be faster than FuryX/980Ti now? in what world? and in what benchmarks? the card can't even surapass 1060 in most benchmarks let alone above that!
