AMD Big Navi would see two product versions with different GDDR6 sizes (12- and 16 GB)
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Undying
16gb 512bit Big Navi sounds so nice. It will be an interesting end of the year.
Astyanax
JamesSneed
Cidious
Hmmm. This is getting interesting.
So we had some rumors of BIG Navi JUST being 15% faster than the 2080ti in AMDoptimised benchmarks.. Then there is a rumor now of it using less than 250Watts then there is the rumor of it not having 72 but 80 CUs... And there has also been a sample found with 56CU...
Here is what I think is going on.
56CU 7nm+ EUV 12GB 15% faster than 2080TI (mistaken for the top card)
72CU 7nm+ EUV 16GB 30-30% faster than 2080TI
80CU 7nm+ EUV 16GB 40% faster than 2080TI (HMB???? Beginning of next year when yields are up for full die usage????)
But I might be mistaken. Those 15% rumors sounded a lot like a 56CU die... and even though AMD has put through optimisations and 7nm+ EUV, I still think 250watts for the 80CU SKU is too low of an estimate.
But we will have to see. Might all be overhyped as usual...... But the simple math of doubling a 5700XT pans out... Navi2X... do the math yourself... Unless they have royally fucked up. (Again)
tunejunky
tunejunky
don't forget that the lesser sku is about 33% chance of being a new mobile... or that they use the same chip for mobile and cut-down model. at 7nm+ the power savings are significant vs. old school radeon. and the mobile section (ryzen) has been proven to be a very lucrative space in a very short time.
but maybe my wishes are getting ahead of their intent:p
Kaarme
Back in 2015 PCB manufacturers still knew how to make a 512-bit bus for GDDR, but now in 2020 it's a lost art.
wavetrex
It's not about the PCB, but about the ASIC itself.
More bits = More die area dedicated to memory controllers = Bigger die = More lithography failures = More expensive to make.
But, harvesting is an option here as well... the 12-GB 384-bit one might just as well be a 16-GB 512-bit one with some memory controllers disabled.
deksman2
Martin5000
well if AMD want me to purchase another GPU it better have HBM.
Not going backwards i hope they dont fail.
Maddness
RogeRR
At the same time rumors state that the competition (not Intel...) will have:
8/16GB (RTX3070/S) - 256bit
10/20GB (RTX3080/S) - 320bit
24GB (Ti) - 384bit
So i hope for AMD that it will be more competitive this time, and can deliver
performance not only in the mid-range, but for enthusiasts as well.
(Because i doubt that nVidia is just compensating something with more GDDR6,
but we will see in september 😛, and probably november from AMDs side)
k0vasz
Fediuld
Cidious
Point is. I'll hold on to my cash a bit. I got a $1000 budget this round... I'm not willing to pay $1200 for a 2080ti like scenario. So I'll wait a bit and see what AMD does.. I do feel awkward towards their lack of solid features like DLSS3.0 and their driver development issues... but yeahhhh I'd like to not have to include the GPU into the loop also.. or even a second loop for it... so below 300 watts would be nice...
devastator
can u have 10gb or 12gb on a 256bit bus by doing some ram chips at 2gb per chip and 1gb per chip like 4x2gb and 4x1gb giveing 12gb or 2x2gb then 6x1gb which give 10gb??????
barbacot
Astyanax
alanm
https://i.pinimg.com/originals/c0/07/92/c0079249f3264dfc26f1f7da7d2094d2.jpg [/spoiler]
Yep, would not be surprised if rumors big navi was only 10-15% better than 2080ti was to conceal the potential of a more powerful card. Each side is waiting to screw the other with surprises. Like what happened with the 5600xt when Nvidia rained down on AMDs parade with last minute price reduction of the 2060, thus forcing AMD to make up for it with frantic bios updates to boost performance. Initial reviews are important because they report perf/price comparisons of competition and recommend accordingly.
[spoiler]devastator