Back in the Nvidia Pascal days, the chipmaker boasted that its mobile GPUs have caught up to their desktop counterparts in terms of performance. Fast-forward to 2021 and that claim has all been thrown out the window.
https://www.notebookcheck.net/The-mobile-GeForce-RTX-3080-is-40-percent-slower-than-the-desktop-GeForce-RTX-3080-What-the-hell-happened.519743.0.html
You forgot to mention that the mobile 3080 is also a completely different GPU from the desktop 3080, it uses the same die as the 3070. As a result it has significantly less CUDA cores (and the everything else SM/RT/etc) as well as a smaller memory interface (256-bit) than the desktop 3080.
There is where eGPU and Thunderbolt become more important than ever if you want a laptop but the power of desktop gaming. AMD should prioritize on implementing USB 4.
Who cares about this 40%??It doesn't matter if the desktop RTX 3080 has 40% more speed than the mobile RTX 3080. There are amazing GPU's from new generation. If that the desktop version has 40% more speed than the mobile has really matter, compared with the newest video games that REALLY IT DOESN'T MATTER.
now I understand why Nvidia is telling laptops manufacturers to list his laptops TDP...
Just hope that in the next gen the power consumption of the graphics cards get lower.
Quote from: Viko6efa on February 11, 2021, 11:36:06
Who cares about this 40%??It doesn't matter if the desktop RTX 3080 has 40% more speed than the mobile RTX 3080. There are amazing GPU's from new generation. If that the desktop version has 40% more speed than the mobile has really matter, compared with the newest video games that REALLY IT DOESN'T MATTER.
Well, personally, it matters to me (and maybe it matters to people with deep pockets as well). I have a laptop with an RTX 2080 mobile @150-watts TDP and planning to upgrade to the latest 3080. And seeing all the recent benchmarks of the 3080 laptop versions, with minimal 5 to 12% game performance increase over the 2080 version, it's not worth the upgrade. Definitely.
Quote from: xpclient on February 11, 2021, 10:07:12
There is where eGPU and Thunderbolt become more important than ever if you want a laptop but the power of desktop gaming. AMD should prioritize on implementing USB 4.
I don't understand why graphics AIB OEMs haven't come out with a portable external GPU with it's own dedicated battery.
Putting powerful dedicated graphics into laptops brings lots of drawbacks, including extra weight and thickness, additional cost, additional power consumption => lower battery life, throttled CPU clocks, higher thermal emissions => louder noise emissions, more expensive cooling solutions => additional weight/thickness etc. with most drawbacks reinforcing each other.
It seems like such an obvious solution to offload these problems from the core platform of the laptop itself, almost the same way that computers do with AIBs... ::)
You cannot defy physics: power supply, cooling and space is limited on laptops, so it's ok.
What's more important: is the RTX 3080 (150W, 16GB) worth getting over the RTX 3070 (140W, 8GB) e.g. in the Tongfang Schenker XMG Neo 15 (AMD Ryzen 5800H)?
The primary reason the 30 Series made the jump that it did is because of the jacked up wattage. Take that away (like you have to in laptops) and it's obvious that there hasn't been some kind of massive leap in the technology. They're just feeding the desktop cards a lot of juice.
Happy with my 2070 Super. Especially since it, you know, exists.
Is that really so unexpected? Ampere's main performance advantages over Turing were massively increased power draw and faster RAM. The rest (like "doubling the CUDA cores") is mostly smart (or misleading, depending on your take) marketing. Architectural improvements are around 20% all things considered, which is not bad at all, but far from what Nvidia marketing department suggests.
Quote from: t4n0n on February 11, 2021, 13:17:07
Quote from: xpclient on February 11, 2021, 10:07:12
There is where eGPU and Thunderbolt become more important than ever if you want a laptop but the power of desktop gaming. AMD should prioritize on implementing USB 4.
I don't understand why graphics AIB OEMs haven't come out with a portable external GPU with it's own dedicated battery.
Putting powerful dedicated graphics into laptops brings lots of drawbacks, including extra weight and thickness, additional cost, additional power consumption => lower battery life, throttled CPU clocks, higher thermal emissions => louder noise emissions, more expensive cooling solutions => additional weight/thickness etc. with most drawbacks reinforcing each other.
It seems like such an obvious solution to offload these problems from the core platform of the laptop itself, almost the same way that computers do with AIBs... ::)
Well, can you put an egpu into a bag. And if your in an area where you can't take a egpu with you, your stuck with shitty hardware.
Quote from: Viko6efa on February 11, 2021, 11:36:06
Who cares about this 40%??It doesn't matter if the desktop RTX 3080 has 40% more speed than the mobile RTX 3080. There are amazing GPU's from new generation. If that the desktop version has 40% more speed than the mobile has really matter, compared with the newest video games that REALLY IT DOESN'T MATTER.
Sure, let's just base our choices on the bigger number in the name. Hail corporate!
Well, i for one have 2080 rtx in laptop (max-p) i always travel with my laptop
from one country to another (back and forth workrelated). Having
egpus would defeat the purpose. Upgrading to 3080 mobile doesnt make
much sense too. Good article.
Quote from: Viko6efa on February 11, 2021, 11:36:06
Who cares about this 40%??It doesn't matter if the desktop RTX 3080 has 40% more speed than the mobile RTX 3080. There are amazing GPU's from new generation. If that the desktop version has 40% more speed than the mobile has really matter, compared with the newest video games that REALLY IT DOESN'T MATTER.
It does if it has the same name and *costs you more money*. It also matters a lot if it's not an "amazing GPU" in comparison to its predecessor. But hey, I guess we know who Nvidia's target audience is 🙄
Why is everyone on notebook check a rocket scientist or overly qualified engineer? Have you guys not anybody from an IT and computer background?
How high up the list is thickness in people's priority when buying a gaming laptop?
It's all to do with power
In the Pascal era the mobile 1080 had similar performance because the power limits were similar to the desktop 1080. NVIDIA sandbagged and sold this as their 'high end' GPU as they didn't need a more powerful GPU to own the competition at the time, and they had the 1080ti waiting for when they did.
... Therefore Nvidia's laptop gaming GPU marketing.
With the 3xxx generation the desktop chips eat more than double the power, that's why mobile variant performance is lower.
The only reason anybody would think ZOMG mobile 3080 is slower!??' is because they haven't read and understood the specs and believe that NVIDIA naming it 3080 means something.
And this level of power - 300W plus - of GPU is not possible in anything thinner than a 5kg 2 inch thick DTR with 60dba fans like the Clevo P870.
And given the shift to thinner and lighter across all segments including gaming, the market has voted that it doesn't want full desktop performance in thick heavy expensive laptops, it wants reduced performance in reduced weight expensive laptops.
Quote from: Bennyg on February 15, 2021, 07:45:26
It's all to do with power
In the Pascal era the mobile 1080 had similar performance because the power limits were similar to the desktop 1080. NVIDIA sandbagged and sold this as their 'high end' GPU as they didn't need a more powerful GPU to own the competition at the time, and they had the 1080ti waiting for when they did.
... Therefore Nvidia's laptop gaming GPU marketing.
With the 3xxx generation the desktop chips eat more than double the power, that's why mobile variant performance is lower.
The only reason anybody would think ZOMG mobile 3080 is slower!??' is because they haven't read and understood the specs and believe that NVIDIA naming it 3080 means something.
And this level of power - 300W plus - of GPU is not possible in anything thinner than a 5kg 2 inch thick DTR with 60dba fans like the Clevo P870.
And given the shift to thinner and lighter across all segments including gaming, the market has voted that it doesn't want full desktop performance in full bodied thick and heavy expensive laptops, it wants reduced performance in lighter thinner expensive laptops.
THE HECK? why zero mention on the main reason it's so much slower - the fact that the 3080m is using an enitely different chip alltogether, with a fricken 42% difference in cuda core count? If they used exactly the same chip and memory the desktop 3080 uses, their performance would be much closer together even with a much lower TDP on laptops.
I thought you guys are experienced in this. Whereas 1000 and 2000 series used exactly the same GPU-s in laptops and desktops, now laptops have cut down versions of them EXACTLY like it was before Pascal - M GPU-s, which is THE MAIN reason why 3080m is so pathetic. Power contraints hurt performance, sure, and the gap would be bigger no matter what they did, but they could at least use the same chips. But I guess greed ruined the utopia of laptops being equal to desktops.
Quote from: ThinkPad X1E Ryzen9 on February 11, 2021, 13:21:59
You cannot defy physics: power supply, cooling and space is limited on laptops, so it's ok.
What's more important: is the RTX 3080 (150W, 16GB) worth getting over the RTX 3070 (140W, 8GB) e.g. in the Tongfang Schenker XMG Neo 15 (AMD Ryzen 5800H)?
apparently you can't break the laws of greed either. The main reason why 3080m is SO MUCH behind the desktop 3080 is not the power, but the fact that it uses a 3070 chip, NOT GA102 chip that the desktop version uses, hence a whapping 42% cuda core difference and crazy difference in performance. I am not saying power doesn't matter - it does of course, but the difference in chips matters even more. The more cuda cores and the better the memory - the more energy efficient a GPU becomes, even at lower clockspeeds. But Nvidia was way too greedy to use the desktop 3080 chip and here's the result.