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Message 22117 - Posted: 20 Mar 2016, 0:36:40 UTC



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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.


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