this post was submitted on 15 Nov 2023
1 points (100.0% liked)
Hardware
47 readers
1 users here now
A place for quality hardware news, reviews, and intelligent discussion.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
GDDR7 memory chips will be in production with either 2 or 3 GB sizes, which means 36GB of VRAM on 384-bit bus could be a possibility for next gen.
Can see 5090 30GB and 5090 Ti 36GB and then a 72GB Quadro.
32GB 5090 and 24GB 5080 is the most realistic configuration.
Also expect both of them to have ridiculous prices. $1500+ for the 5080 and $2500 FE MSRP for the 5090 wouldn't surprise me. AMD is skipping high-end for 1 generation so their competition will likely be a $1000 5070Ti. The 7900XTX or a refresh of it will be AMD's flahship until RDNA5. They have their valid reasons for that but it's very bad news for Nvidia customers, as much as they like to bash AMD.
Nvidia also wants to protect their way more expensive professional lineup so especially the 32GB 5090 will be priced to the moon.
A 32GB 5090 would mean 512bit bus, which this rumor is saying it will not have, contrary to the original rumor. So it'll either be 24GB or 36GB(48GB also, but that's probably not happening) as there will be 24Gb GDDR7 modules as well in addition to 16Gb ones(idk if mixing different capacity memory modules is a thing though to get like 30GB out of 384 bit bus, I'm just guessing no). Maybe they do both versions, or leave the 36GB as a potential 5090ti for later on, who knows.
Rumors have a 5090 with GDDR7 and a 384-bit bus. Micron has GDDR7 modules on their roadmap as 2GB and 3GB. This means that the memory configurations for 2GB modules will be 24 or 48GB, and with 3GB modules it will be 36GB or 72GB.
32GB would imply it's a 256 or 512-bit bus, neither of which are very likely for a xx90. I could see them maybe going as low as a 320-bit bus for 30GB. Even 33GB with a 352-bit bus is more likely.
The 5080 will be another thing, 24GB would imply a 256-bit bus with 3GB modules. Nvidia has been all over the map with the xx80 memory width, so it will be anyone's guess. If they prioritize memory bandwidth and use a 320-bit bus, a 20GB card is most likely.
GDDR prevents having arbitrary memory sizes.
A 20GB 5080, probably at an even higher MSRP than the 4080 due to a lack of competition, would be criminal.. There was supposed to be a 20GB 3080 for crying out loud. And games will def go over 16GB before next next gen so 4080 owners will face a VRAM bottleneck and then their upgrade option is a $1500 5080 omg.
I heard the 512-bit rumor and thought Nvidia was FINALLY fixing their VRAM issue across their entire product stack.. Sigh.
36gb of vram on the 384-bit bus would be fantastic, yet I'm somehow sceptical when Nvidia sells the 48gb A6000 for a $6800 MSRP. Even without benefits like nvlink, a 36gb card ought to cannibalise Nvidia's productivity cards quite a lot. I don't think Nvidia would actually be TOTALLY opposed to this if they could produce enough 5090's to not sell out of them since it would help entrench Nvidia's CUDA moat, but I don't think Nvidia is going to be capable of pulling that off.
It's not impossible we see 36gb 5090 and 72gb a7000 or whatever. I'm just not holding my breath especially when AMD doesn't seem to have much in the pipeline to even compete with a 24gb model.
I could see Nvidia releasing both 24GB and 36GB cards at the top, but charging a large premium for the extra VRAM similar to how Apple does for extra RAM above base.
The BOM difference on 24GB to 30GB, even for new product like GDDR7 should be less than $50 easy, but I can see Nvidia adding $300+ for the 36GB model for the extra profit.
It's practically guaranteed, there is no other realistic configuration.
I also expect the 32GB 5090 to launch at $2000-2500 MSRP and the 24GB 5080 at $1500+ because AMD is skipping a generation and the 5070Ti will likely match AMD's offering at $999. The 7900XTX or a refresh of it will remain their top card until RDNA5.
Next gen Nvidia prices are going to be absolutely bonkers, worse than now. And people will buy them anyway.. Especially because many have skipped the 4000 series hoping things would improve. With RDNA5 and more production capacity from new fabs prices will likely improve but that's at least 3 years in the future.
Why actually build the 36 GB one though? What gaming application will be able to take advantage of more than 24 for the lifetime of 5090? 5090 will be irrelevant by the time the next gen of consoles releases, and the current one has 16 GB for VRAM and system RAM combined. 24 is basically perfect for top end gaming card.
And 36 will be even more self-canibalizing for professional cards market.
So it's unnecessary, expensive, and canibalizing. Not happening.
Don't think so. Rtx Titan from 2018 much faster than ps 5 gpu from 2020. I suppose next gen console gpu will get rtx 4070 level perfomance or slightly above. Ps 4 had hd 7850 perfomance in 2013 so...
Gaming applications didn't take advantage of the 24GB when it debuted on the 3090 and they still don't do for the 4090 now. That's not what drives these decisions.
The bus width needed to be what it needed to be. That left 2 possibilities - 12 GB and 24 GB. The former was way low for 4090 to work in its target applications. 24 it became.
This is exactly what drives these decisions.
What do you think drives them?
Of course not, memory bandwidth matters much more. We always say this, and now people finally see proof with 4060ti
36GB is certainly a possibility. VRAM demand is high across multiple markets. Currently you can get a 24GB 4090 or 48GB A6000 Ada. There's certainly a possibility of seeing 36GB 5090 and 72GB A6000 Blackwell (B6000?)