Possible Radeon 390X / 390 and 380X Spec / Benchmark (do not hotlink images!!!!!!)

[Orangey]

would have preferred to see a HBM1 comparison as that's what the upcoming cards will be using?

...eh?

I've circled the pertinent area

Spoiler

It seems they've doubled the density since the original slides

Of course this leaves open the possibility of 16GB mammoths using 8 stacks or some fancy engineering, possibly only FirePro.

 

[Bonjour]

Amazing, if true.

 

[SiDeards73]

that would mean a single chip would be 4gb, so an 8gb stack would be relatively small in height etc?

Imagine a scenario AMD suprise everyone by releasing a 16gb HBM1 390X monster..... holy hell....

That would definitely make for some 4k goodness, in reality though 4 or 8gb should be definitely doable

 

[humbug]

This is huge? 8GB confirmed (16Gb=2GB per stack * 4 stacks = 8GB):

Just goes to show how slides get outdated and you can't trust them after a certain amount of time.

Also Fudo is running a paid FUD piece about Fiji being dual GPU, his "proof" is a mention of multi GPU on a Liquid VR slide... I won't waste your time linking it.

You think the 390X has 8GB HBM2? That will be epic if true, 8GB+ is the sweet spot for new cards imho. If I was buying later on this year would much rather have 390X 8GB over the 6GB 980 Ti rumoured.

FUDO is indeed claiming that the 8GB Fiji card is 2x4GB dual GPU. Here's the link below for anyone interested. (I hope this isn't right).

http://www.fudzilla.com/news/graphics/37373-amd-fiji-has-two-gpus

@ Fudzilla, your speculating and its based on old slides which state HBM1 is limited to 4GB, because of that the only way for the 390X to have 8GB would be to have 2 interposers.

Well i thought that too, i even suggested it around here somewhere.

however, we were wrong. HMB1 is infact limited (with current density) to 16GB.
Thats what you and i failed to take into account, die density.

Oh and stop stealing my ideas!!!!!!!

 

[elmuzzy66.]

that would mean a single chip would be 4gb, so an 8gb stack would be relatively small in height etc?

Imagine a scenario AMD suprise everyone by releasing a 16gb HMB1 390X monster..... holy hell

I think the surprise will be that amd actually releases anything

 

[Orangey]

I actually suggested shrinking the dies

 

[humbug]

I actually suggested shrinking the dies

Smart ass

 

[JediFragger]

that would mean a single chip would be 4gb, so an 8gb stack would be relatively small in height etc?

Imagine a scenario AMD suprise everyone by releasing a 16gb HMB1 390X monster..... holy hell

If the Crossfire profiling is still lacklustre (at best!!) it really wouldn't matter to me.

Their's a reason a lot of us 295x2 owners are switching to the Green team lately...

 

[Ayahuasca]

...eh?

I've circled the pertinent area

I know that I wasn't having a go at you, I just meant the performance comparison I would have preferred to have seen HBM1 vs GDDR5 as we won't see HBM2 for a while yet.

 

[SiDeards73]

If the Crossfire profiling is still lacklustre (at best!!) it really wouldn't matter to me.

Their's a reason a lot of us 295x2 owners are switching to the Green team lately...

Fully understandable mate, right now most people with Xfire setups will be thinking "why would i bother with a pair of 3XX cards when AMD cant even support the 2XX and older series"

Anyhow until we see official specs its all just speculation

 

[D.P.]

...eh?

I've circled the pertinent area

Spoiler

It seems they've doubled the density since the original slides

Of course this leaves open the possibility of 16GB mammoths using 8 stacks or some fancy engineering, possibly only FirePro.

That is a small b, as in bits, not a big B, as in bytes.

That image shows 16Gb which is 2GB., why is that so impressive?

 

[Mauller]

From those slides, it looks like they interleaved two stacks in parallel within a single memory module, so doubling memory capacity per chip, so doubling capacity when only 4 dies can be used on the interposed.

 

[Orangey]

That is a small b, as in bits, not a big B, as in bytes.

That image shows 16Gb which is 2GB., why is that so impressive?

 

[D.P.]

Why the completely ignorant roll eyes, truth hurts?

HBM1 in a 4-Hi stack gives 2GB of memory, AMD will use 4 HBM1 chips to get 8GB of memory on the 390X, that is widely known.

Only HBM2 allows 32Gb per chip, or 8GB. You seem to be confsed between HBM1 and HBM2, it is HBM2 that has double the memory density of HBM1.

 

[humbug]

That is a small b, as in bits, not a big B, as in bytes.

That image shows 16Gb which is 2GB., why is that so impressive?

So i got caught out by the small b thing again

 

[Orangey]

Why the completely ignorant roll eyes, truth hurts?

HBM1 in a 4-Hi stack gives 2GB of memory, AMD will use 4 HBM1 chips to get 8GB of memory on the 390X, that is widely known.

No it's bloody not.

It was supposed to be 1GB per stack * 4

Now it's 2GB * 4

Dunno why this has to be so complicated.

So i got caught out by the small b thing again

Don't worry, he's waffling.

 

[humbug]

I'm confused.

 

[D.P.]

It was supposed to be 4GB per stack

Now it's 8GB

Dunno why this has to be so complicated.

It is not 8GB per stack. The specifications for HB1 were finalized long ago, don't get confused with HBM2 which is known to have twice the memory density.

That picture is exactly the same as the earliest pictures, 16Gbits, i.e. 2GB.

 

[D.P.]

So i got caught out by the small b thing again

In the memory world everything is done in bits.The small b is bits not Bytes.
Nothing has changed on HBM1 because it is too late to make changes to the specifications.

 

[Orangey]

It is not 8GB per stack. The specifications for HB1 were finalized long ago, don't get confused with HBM2 which is known to have twice the memory density.

That picture is exactly the same as the earliest pictures, 16Gbits, i.e. 2GB.

I mangled the post, you replied too quick.

Well done for wrecking the good news.

To anyone reading, just ignore the last few posts. It clearly says 16Gbit per stack = 2GBytes and 4 stacks = 8GB.