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

[rtho782]

shared memory seems the way to go, AMD is always looking far ahead but the software is never ready for them lol

Shared memory?

So, yay HBM, tons of bandwidth but 4GB limit. While we're at it, let's slate the 970 for only accessing 3.5GB at full speed and the last 512MB at 1/8th speed.

Then, 390X comes out with "shared memory", meaning that 390X crossfire has a total of 8GB, fast access to 4GB of it, and then access to the other 4GB limited to PCIe speed, potentially 2.0 x8 or x4 for a massive 4GB or 2GB/sec vs 512GB/sec for the first 4GB.

Would be far more of a joke than the 970 that AMD fans thought was a travesty.

 

[humbug]

Somehow I can't see the 390X having 10x times the bandwidth of the TX with half the power consumption, Gotta be realistic, Based on current info it will be a 250w GPU with around 600GB/s bandwidth.

Yeah, i think about the same power consumption as the 290X but with a #### load more performance, thats realistic.

 

[Mal X]

IF the 390X is 15% faster than the TX, What is the point in releasing the 980 Ti as it's a TX with less memory, Doesn't make sense to me TBH.

well no, i'm just giving an example to explain how bloody useless 4gb of RAM will be at 4K...............dont forget the gimped 970 as a perfect example of this.

the 980TI will be close to the 390X but with 8gb.....so this 8gb looks like the sweet spot nowadays, with 4gb being way too low.

there is a huge switch to 4K UHDTV, it's a tidal wave, 1080p looks dead and buried

 

[Dicehunter]

well no, i'm just giving an example to explain how bloody useless 4gb of RAM will be at 4K...............dont forget the gimped 970 as a perfect example of this.

the 980TI will be close to the 390X but with 8gb.....so this 8gb looks like the sweet spot nowadays, with 4gb being way too low.

there is a huge switch to 4K UHDTV, it's a tidal wave, 1080p looks dead and buried

Ahh gotcha.

Personally I'm not into 4K, I have 3 x 1080P thin bezel monitors in surround and still a lot easier to drive than 4K, Great experience for me

 

[Mal X]

Nothing wrong with using a single 4gb card for 2160p.

maybe, but nobody is interested in the Maths, they just want to buy the best gear they can, so a 8gb card is better than a 4gb card, simply because it has more more more ...it's all about marketing Hype with regards to buying tech nowadays.

 

[mmj_uk]

IF the 390X is 15% faster than the TX, What is the point in releasing the 980 Ti as it's a TX with less memory, Doesn't make sense to me TBH especially if the 390X is the same price and/or cheaper than the 980 Ti.

There'll probably be a major price restructuring with GTX970 and GTX980 etc, cards over £400 aren't going to sell in any great number in the grand scheme of things anyway.

I assumed 390X would be <£400 but AMD could just as well charge sky high prices and use it as a willy waving exercise, it's the more affordable lower end where they need to succeed.

 

[Kaapstad]

well no, i'm just giving an example to explain how bloody useless 4gb of RAM will be at 4K...............dont forget the gimped 970 as a perfect example of this.

the 980TI will be close to the 390X but with 8gb.....so this 8gb looks like the sweet spot nowadays, with 4gb being way too low.

there is a huge switch to 4K UHDTV, it's a tidal wave, 1080p looks dead and buried

The 980ti will have 6gb not 8gb.

As I said earlier there is nothing wrong with using a single 4gb card at 2160p.

If you think differently perhaps you can demonstrate why, as for me I often use a single 4gb card @2160p.

 

[CAT-THE-FIFTH]

4GB would be disappointing for high end peeps,but there should be the texture compression tech first seen in the R9 285.

Would still be funny in the VRAM wars as the previous situation is now in reverse.

 

[_Alatar_]

PCPer have a video up with someone who i don't recognise but is apparently someone and someone who has had one, he is quite adamant it will be 8GB, the next day the 4GB brigade refresh their rhetoric, predictable....

David Kanter has held one, doesn't own one, but said that he had no way of knowing what the specs of the core or the memory were from just holding the thing.

And he said that HBM1 as a tech is more than capable of 8GB of memory, which is true since HBM1 allows for 2-8 stacks each with 1GB of memory.

Problem is that:

-All of AMD's promotional material shows 4 stacks

-Now pretty much all sites that were given the presentation are saying AMD is staying with 4 stacks / 4GB

-AMD is using a 4096bit memory controller which is a natural fit for 4 stacks. While that 4096bit memory controller could maybe theoretically accept 8 stacks with some switch technology like we see in use with motherboard memory channels and GDDR5 GPUs with 2 mem chips per 64bit controller this hasn't actually been proven and the only indication that this would be the case are those slides that leaked in March (and may have been faked or the situation might have changed since then).

So the evidence against 8GB is piling up while 8GB proof pretty much sits at 1 stack of leaked poor quality slides.

Could still be 8GB as far as I know but right now I'm not sure that the smart money would be on 8GB at launch.

 

[Kaapstad]

maybe, but nobody is interested in the Maths, they just want to buy the best gear they can, so a 8gb card is better than a 4gb card, simply because it has more more more ...it's all about marketing Hype with regards to buying tech nowadays.

Actually for gaming on a single card at high resolutions 4gb is better than 8gb as the card with less memory will often overclock higher giving more GPU grunt. This will be more use more often than the few times you can find something that will use more than 4gb and hold 60fps at high resolution on a single card.

 

[Mei]

that advert finally makes sense!
it was an advert for 1440p!

although i think 8gb is sweet spot right now, its not going to be that in a few years, something has to change in way we use ram or we going to have cards with 32gb...maybe we will i duno

 

[VincentHanna]

1440p does exceed 4GB though at times.

Much as I want AMD to do well, if you game at 1440p i'd advise the 980Ti

 

[humbug]

well no, i'm just giving an example to explain how bloody useless 4gb of RAM will be at 4K...............dont forget the gimped 970 as a perfect example of this.

the 980TI will be close to the 390X but with 8gb.....so this 8gb looks like the sweet spot nowadays, with 4gb being way too low.

there is a huge switch to 4K UHDTV, it's a tidal wave, 1080p looks dead and buried

It will only have a 256Bit Bus if the 980TI is 8GB, GK200 is 384Bit hence 12GB and not 8GB or 16GB, the bus restricts it to 6 - 12...

Or if they do want 8GB and a 384Bit Bus they would have to gimp the last GB

Something to do with the Shaders being locked to the bus, its why they had to gimp the last 500MB on the 970, to keep the 256Bit Bus.

 

[shankly1985]

Let's wait for benchmarks and facts.

 

[Mal X]

Ahh gotcha.

Personally I'm not into 4K, I have 3 x 1080P thin bezel monitors in surround and still a lot easier to drive than 4K, Great experience for me

i have no choice, because all the latest technology is going into 4K tvs only, because none of the big guns bother with 1080p any more, in fact, LG is switching to 4k OLED only they are dumping everything !!

there is good news though, because 1080p Gaming upscales really well to 4K ...................BUT IT DID NOT A YEAR AGO

 

[Mtom]

I'll just wait and see and not trying to predict anything.

If the 4Gb slows it down at higher resolutions then the 8gb will put this right.
If it gives the TX a tonking even with 4Gb then its all shiny.

 

[Boomstick777]

Even though I have said many times that I think it will be 4GB only at first, this doesn't make any sense.

We've had supposedly official leaked AMD slides talking about dual link interposers (which wouldn't be needed if it was only 4GB) and how HBM gen2 will remove the need for them.

If your flagship card only has 4GB then you don't launch your tier 2 cards with 8GB.

I know it is the nature of these card launches, but there are too many rumours that completely conflict with one another.

+1

It doesn't add up, I think at the very least the top flagship AMD card with ship with 8GB HBM, it might be priced high like Titan X but I'm positive these aren't just going to be 4GB.

The lower down cards could have less which is fair enough as 970 has 3.5GB+0.5GB / 980 has 4GB.

Let's wait for benchmarks and facts.

I think until we see them speculation will continue to run wild. Everyone is waiting to see what these can do, so speculation is part of the build up.

Hopefully we're only just over 2 weeks away from the facts, expect lot's of rumours / speculation until then lol.

 

[JediFragger]

A nice little article;

http://www.anandtech.com/show/9266/amd-hbm-deep-dive

 

[Kaapstad]

I'll just wait and see and not trying to predict anything.

If the 4Gb slows it down at higher resolutions then the 8gb will put this right.
If it gives the TX a tonking even with 4Gb then its all shiny.

Nothing much will really change with the arrival of the 390X

A rough guide,

1 card setup 4gb of memory

2 card setup 6gb/8gb of memory

3 card setup 8gb of memory

4 card setup 12gb of memory

What ever setup you use, you will probably have to compromise somewhere.

 

[Mal X]

put it this way, would you buy a 4gb card if you knew AMD will be re-releasing the same card at 8gb, in 6 weeks time !!!!!!!!!! dont you think AMD realise this

this thread is getting very stupid indeed