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Though rumors, these are realistic expectations. Remember they're going from 28nm to 16nm GPUs which is a monstrous leap. Final specs could change, but this should be ballpark anyway. The GDDR5 in the X80 and X80Ti may turn out to be GDDR5X. Remains to be seen.
The X80, X80Ti and X80 Titan are not official product names. Those are not yet known.
Last edited by John P. Myers; 03-18-16 at 03:54 PM.
Man, those look nice. First BIG upgrade in GPU tech I've seen in a while...will make my 7970 seem long in the tooth.Wonder what the price point will be, though....
Your first born.Originally Posted by DrPop
You'll never know what you're living for until you know what you're willing to die for.
This was on Collatz Conjecture Message boards
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Message 22125 - Posted: 21 Mar 2016, 11:29:21 UTC - in response to Message 22117.
How Accurate Are These Specs?
Now that we’ve gotten the specs out of the way there are a few red flags that I should direct your attention towards. The first being that the source of these specs is claiming that the GTX 1080 Ti will feature 8GB of GDDR5 and a 512bit memory interface. All the while the Pascal based Titan, which is based on the very same GP100 GPU, will feature an entirely different memory interface and an entirely different memory standard.
Any person with basic knowledge of chip design will tell you that this will NOT happen. Each GPU will only feature one memory standard, either GDDR5/X or HBM/2, not both. You will not see a GPU with two completely different memory interfaces supporting two completely different memory technologies. It will only support one or the other.
The “Alleged” Memory Specs For The GTX 1080 Don’t Make A Whole Lot Of Sense Either
There’s another red flag here and that this source is claiming that Nvidia will be using GDDR5, rather than GDDR5X for its GP104 powered GTX 1080. Not only that but that it’s also allegedly configured with a 384bit memory interface and 6GB of memory.
For starts it’s unlikely that we’ll see Nvidia use GDDR5 rather than GDDR5X – which offers double the bandwidth – in its high end graphics cards. Secondly, benchlife, a source which we hold in a much higher regard for its impeccable accuracy over the years claims that the GTX 1080 will be configured with 8GB of memory rather than six. Which, credibility aside, is a much more believable figure to begin with.
Considering that GDDR5X will not only offer twice the bandwidth of GDDR5 but also twice the capacity. Eight gigabytes of GDDR5X would require a 256bit memory interface and would deliver 448 GB/s of memory bandwidth. That amount of bandwidth is enough to keep a GPU with 33% more performance than the GTX TItan X happily fed. Even if benchlife had never leaked these memory specs, 8GB of memory is 100% what we would’ve bet on. It simply makes perfect sense for this type of chip and its time to market.
Both of these redflags will prompt us to label the “confidential” table above as very questionable at best.
Those are good points, however not entirely true. First let me say that i did state this was a rumor and Crunch3r could be half or entirely right. Or entirely wrong.
His first point about not using more than 1 memory standard on the same GPU is false. For example, the GK107, GK208, GM107, GF116, etc. were made to use either DDR3 or GDDR5, and could be purchased in either configuration, with different bus widths as well. It's also entirely possible HBM2's supply won't be abundant enough and all new GPUs end up with GDDR5X instead (AMD was going to use HBM2 as well).
I already mentioned GDDR5X would possibly be used instead of GDDR5, as he mentioned as well. The amount of VRAM on the 1080 is something i somewhat agree with him about. 8GB just makes alot more sense, but at the same time i don't have any info verifying it one way or the other. Also it must be remembered that the GP104 is of the same class as the GTX 770 and GTX 680.
Edit: Another thing to point out are his quotes on the projected bandwidth of GDDR5X of 448GB/s. This is true after the process matures, but is not true at all today. Today, at best, you'd get 384GB/s @ 256bit bus width.
Last edited by John P. Myers; 03-21-16 at 09:55 PM.
Thanks for your info, looks like this is going to be a work in progress.
Nvidia 1080, available May 2016, is going to run about $259, from what I can find on newegg and other sources.Your first born.
More info today and this is all 100% confirmed from Nvidia themselves.
In the Tesla GPUs, the GP100 chip has the following specs:
3584 cores (full ungimped chip has 3840 - these specs are for the gimped chip))
21.216 TFLOPS FP16 (FP16 in the past has been exactly equal to FP32)
10.608 TFLOPS FP32
5.304 TFLOPS FP64 (In the past, Nvidia's FP64 rate (when ungimped) has been equal to 1/3 the FP32 rate. Now improved to 1/2)
1328 MHz core clock/1480MHz boost
16GB HBM2 @ 720GB/s bandwidth
Note these are specs for the Tesla version. Consumer GPUs usually have a higher FP32 rating than the Teslas due to higher base clocks so we'll see. This is the same chip that would be used in the 1080Ti and/or Pascal Titan.
How do the server/data center models stay cool with passive cooling?
I think a GTX 1080 would more likely start in the $600-650 range, at least until AMD launches their 14nm Polaris lineup. Both are exciting to me... more GFLOPS with lower power usage
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