Thursday, July 2nd 2020
NVIDIA GeForce "Ampere" GPUs Built on Samsung 8nm Instead of TSMC 7nm?
NVIDIA's upcoming GeForce "Ampere" family of GPUs will be built almost entirely on Samsung's 8 nanometer silicon fabrication process that's derived from its 10 nm node; rather than TSMC's 7 nm process, according to kopite7kimi, a source with a high hit-rate with NVIDIA rumors in the past. The 8LPP silicon fabrication node by Samsung is an extension of the company's 10LPP (10 nm) node. Both have the same fin pitch, but reductions are made in the areas of gate pitch (down by 6%) resulting in a transistor density of over 61 million/mm². Apparently NVIDIA's entire high-end product stack, including the GA102 silicon that powers at least three high-end consumer SKUs, are expected to be based on Samsung 8LPP.
Source:
kopite7kimi
65 Comments on NVIDIA GeForce "Ampere" GPUs Built on Samsung 8nm Instead of TSMC 7nm?
*yawn*
Of course, the real interest is in their electrical characteristics.
Also:
8LPP is not Samsung's most advanced 8nm, that would be 8LPU - Samsung is claiming the latter is their best 8nm for SoCs that required *both* high clocks and high density.
-and-
Are you sure rumormills aren't confusing this with Nvidia's roadmap for their Tegra/Xavier devices? Orin was slated for 8LPP (no direct sources from Nvidia or Samsung, merely "we heard"), and it is an arm A78 + Ampere product (also a few RISC-V data management cores inside).
Given 8LPU was a refinement of 8LPP - specifically for HPC applications - it would make more sense for 8LPU to be used over 8LPP in these rumors. Admittedly, 8LPP was available in 2017, whereas 8LPU took until 2018 to be launch.
Either way, fun to speculate.
EDIT: source of the rumor doesn't even state 8LPP, just Samsung 8nm.
However if that is really the case, I feel Nvidia may be underestimating competition. Its the story of the tortoise and the hare. While RDNA may not be as efficient as Turing at this point despite being on 7nm, they have been closing that gap moving from Vega 7 (also on 7nm) to RDNA. While there is nothing concrete about RDNA2, I presume there should be further improvements with efficiency (based on what they have been marketing). Interesting to see how the next gen graphic war heating up.
we'll see.
They might very well have masks ready for 7nm and 8nm, because what matters a lot is not only the performance/density of a node, for Nvidia yields and capacity are paramount, because they sell a lot of cards...
IMO, the efficiency of RDNA is not so bad, it's just that AMD decided to go with a cheap small die and overclock it as much as possible. in order to increase profit margins.
Smaller chip is likely because
1. 7nm is not cheap. This is the cutting edge fab slightly more than a year back
2. AMD is introducing a brand new product, RDNA.
They may be using RDNA as a test on 7nm (pipe clearing) before they introduce higher end parts on 7nm.
As for the cutting edge, AMD/ATI strategy historically was always to go to the most advanced node first, although many times it has penalized them because the process wasn't mature enough and they had to pay the price of additional work to tame the process.
RDNA is not bad but it is way of a stretch to say anything about RDNA2 at this point. Consoles is one thing but the discrete PC cards is other.
If you think a large company like Nvidia bases all their decisions only on proucts that have been launched ayear ago, you are utterly misled. Nvidia's marketing is very competent and extremely proactive, note how they managed to put AMD in trouble with the launch of the 5600XT by launching the EVGA 2060 KO, or how they launched the Super sku's when AMD launched the 5700XT. That's clever marketing and it's always based on having knowledge in advance about what the competition is doing. All significant companies have this, it's just that Nvidia's marketing seems way more competent than AMD's, so when they make a mistake it is much more remarkable. They're essentially the same thing, and an experienced engineer will be most probably capable of estimating the outcome of the translation from APU to a discrete graphic card in terms of TDP, frequencies and efficiency. Now I'm not that engineer, but Nvidia has loads of them.
I believe that Nvidia will release 7NM Ampere in this year but maybe they can release it on 8NM.
If we look up transistor densities,
References:
www.techcenturion.com/7nm-10nm-14nm-fabrication
www.ecdatasheet.com/industry-news/tsmc-12nm-grabbed-nvidia-turing-from-samsung-10nm/
www.anandtech.com/show/15217/intels-manufacturing-roadmap-from-2019-to-2029
www.notebookcheck.net/Nvidia-AMD-book-out-spare-TSMC-7nm-production-lines-for-next-gen-GPUs.462511.0.html
NV didnt put AMD in trouble by releasing 2060 KO but it was NV response to the 5600XT's performance after it had been released.
The Super skus on the other hand where released to counter AMD's products and then AMD has tweaked the BIOS for those by giving it to AIB's
All of this doesn't mean NV had known about AMD's products and vice versa.
Do you think AMD knows what NV new graphics are gonna be like? I doubt it. Consoles are not the same thing as PC's even though they share kinda same counterparts. These are dedicated for gaming while PC's are not just for gaming and that is the difference. Consoles don't need that much horse power. Consoles are dedicated for games and what NV can get out of those is that they will have the capability of ray tracing but it won't tell them much where the PC's discrete cards RDNA2 will end up. NV will prepare for various scenarios but it isn't like they know exactly what RDNA2 will bring in terms of performance. Unless they listen to AMD's keynotes about it but as you already know, we need to wait for the reviews and actual benchmarks to judge the performance.
Prediction may be correct but also may be way off.
AMD is well-known for being very "leaky" :
adoredtv.com/overvolted-9-amds-leaky-ship/ You're beating a dead strawman here, I agree with you consoles are different animals than PC, but I wasn't talking about that.
What I said is that a good engineer can extract a lot of information about how a hardware architecture will perform as a discrete graphics card, knowing what clock frequencies it can hit as an APU in a TDP constrained console. What matters here is not how many FPS will have Big Navi in Red Dean Redemption 2. What Nvidia needs to know is only how many TFlops and what memory bandwidth will it have, approximately. I hope it's clearer now.
But basically I think you idealize what is competition in a free market. Companies do not try to make the best product that they can make. Companies try to make the most money they can make. They do that usually by doing the cheapest product possible but which is still better than the competition, or at least competitive with the price of the competition.
Or, as they say, when you're chased by the bear, you don't have to be faster than the bear, you just have to be faster than your friend ;).
As for product stacking, they usually do their best within the limits they have and then, closer to launch they see what the competitor is cooking and try to outmatch it. In this case, nvidia thought a bog standard GA104 will do just fine with rdna2, but they found out that AMD has much better performance than anticipated. So they moved 3080 series from ga104 to ga102 which is made on 7nm and that was meant for titan card.