Wednesday, December 30th 2020

Rumor: NVIDIA RTX 3080, 3070, 3060 Mobile Specifications Detailed

by
Raevenlord
 Discuss (33 Comments)
Apparently, specifications for NVIDIA's upcoming RTX 30-series mobile solutions have been made public. According to Videocardz via Notebookcheck, NVIDIA will introduce three mobile versions of their RTX 30-series graphics cards in the form of the RTX 3080, RTX 3070 and RTX 3060. Like past NVIDIA mobile solutions, these won't directly correspond, hardware-wise, to their desktop counterparts; NVIDIA has the habit of downgrading their mobile solutions' chips compared to their desktop counterparts. According to the leaked specifications, this means the mobile RTX 3080 will maker use of the company's GA-104 chip, instead of the GA-102 silicon found on desktop versions of the card.

The mobile RTX 3080 should thus feature a total of 6,144 CUDA cores, as present in the fully-enabled GA-104 chip (compare that to the 5,888 CUDA cores available on the desktop RTX 3070, and the 8,704 CUDA cores available on the RTX 3080). These CUDA cores would be clocked at up to 1.7 GHz. The memory bus should also see a cut down to 256-bit, which would allow NVIDIA to distribute as many as 4 versions of the RTX 3080 mobile: Max-Q (TGP 80-90 W), Max-P (TGP 115-150 W), with either 8 GB or 16 GB of GDDR6 memory. The RTX 3070 mobile keeps the GA-104 chip, 256-bit bus and GDDR6 memory subsystem (apparently with only 8 GB memory pool available), but further cuts down CUDA cores to 5,120 (Max-Q TGP 80-90 W, Max-P TGP 115-150 W). Finally, the RTX 3060 mobile should make use of the GA106 chip, set up with 3,072 available CUDA cores and a 192-bit memory bus across its 6 GB of GDDR6 VRAM pool (Max-Q TGP 60-70 W), Max-P (TGP 80-115 W). Expect these specs to be confirmed (or not) come January 12th.
Sources: Notebookcheck, via Videocardz

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33 Comments on Rumor: NVIDIA RTX 3080, 3070, 3060 Mobile Specifications Detailed

#26
yotano211
Chrispy_Yeah, At the moment - specifically this article - the only real info we have on the mobile 3000-series is CUDA core count and power target, so that's what matters. Looking at architectural efficiency is hard because across the range of SKUs for any architecture there is a huge range of different efficiencies, and the SKUs and power targets (which heavily influence the power efficiency) don't match up between Turing and Ampere either.

The point that's perhaps even more important than the relative 'per-core' efficiency of Ampere vs Turing is actually how they're going to squeeze a 320W card into a 115W laptop!

[INDENT]A desktop 2080 had 2944 cores @ 215W, a mobile 2080 had 2944 @ 115W[/INDENT]
[INDENT]Same core count, 44% TDP reduction[/INDENT]
[INDENT]Same silicon (binned for voltage efficiency) so the reduced TDP was good for 80-90% of the desktop performance.[/INDENT]
[INDENT][/INDENT]
[INDENT]A desktop 3080 has 8704 cores @ 320W, a mobile 3080 has 6144 @ 115W[/INDENT]
[INDENT]30% core count reduction, 65% TDP reduction.[/INDENT]
[INDENT]Lower tier silicon with reduced ROPs, TMUs, Tensor cores etc. If performance is even half of a desktop 3080 I'll be impressed.[/INDENT]

It's a huge cut, and so the comparison that people need to be careful to avoid is mobile Ampere vs mobile Turing - because that's no longer like for like, it's comparing a desktop-equivalent with something that absolutely isn't a desktop equivalent!
The 2080 mobile version is rated at 150w, not 115w, there is no 115w version. The 2070 mobile is the one rated at 115w.
Posted on Reply
#27
THANATOS
Chrispy_The point that's perhaps even more important than the relative 'per-core' efficiency of Ampere vs Turing is actually how they're going to squeeze a 320W card into a 115W laptop!

[INDENT]A desktop 2080 had 2944 cores @ 215W, a mobile 2080 had 2944 @ 115W[/INDENT]
[INDENT]Same core count, 44% TDP reduction[/INDENT]
[INDENT]Same silicon (binned for voltage efficiency) so the reduced TDP was good for 80-90% of the desktop performance.[/INDENT]
[INDENT][/INDENT]
[INDENT]A desktop 3080 has 8704 cores @ 320W, a mobile 3080 has 6144 @ 115W[/INDENT]
[INDENT]30% core count reduction, 65% TDP reduction.[/INDENT]
[INDENT]Lower tier silicon with reduced ROPs, TMUs, Tensor cores etc. If performance is even half of a desktop 3080 I'll be impressed.[/INDENT]

It's a huge cut, and so the comparison that people need to be careful to avoid is mobile Ampere vs mobile Turing - because that's no longer like for like, it's comparing a desktop-equivalent with something that absolutely isn't a desktop equivalent!
As far as I know mobile 3080 will be based on GA104 instead of GA102. That's why It has only 6144 Cuda cores, because that's the full configuration for GA104 and for example desktop RTX 3070 is a cutdown version of GA104 with 5888 cores @ 220W. So the model with highest TDP should be ~80-90% of RTX3070.
yotano211The 2080 version is rated at 150w, not 115w, there is no 115w version. The 2070 is the one rated at 115w.
Yes, you are right about 150W TDP for RTX 2080.
For example 2080 Super mobile has 9 versions with different TDP according to notebookcheck.
ModelTGPBaseBoost
RTX 2080 Super200W15601740
RTX 2080 Super190W15301710
RTX 2080 Super180W14851680
RTX 2080 Super170W14551635
RTX 2080 Super160W14101605
RTX 2080 Super150W13651560
RTX 2080 Super Max-Q90W9751230
RTX 2080 Super Max-Q85W8851155
RTX 2080 Super Max-Q80W7351080
Posted on Reply
#28
yotano211
THANATOSAs far as I know mobile 3080 will be based on GA104 instead of GA102. That's why It has only 6144 Cuda cores, because that's the full configuration for GA104 and for example desktop RTX 3070 is a cutdown version of GA104 with 5888 cores @ 220W. So the model with highest TDP should be ~80-90% of RTX3070.


Yes, you are right.
For example 2080 Super mobile has 9 versions. notebookcheck
Most 2080s came in the 150w version, very few used anything higher than 150w. The ones that did have 150W, mostly where in the 190w-200w range that I know of.
Posted on Reply
#29
THANATOS
yotano211Most 2080s came in the 150w version, very few used anything higher than 150w. The ones that did have 150W, mostly where in the 190w-200w range that I know of.
I thought 150W was the fastest version untill I found this on notebookcheck. :D
Posted on Reply
#30
yotano211
THANATOSI thought 150W was the fastest version untill today. :D
Anything higher than 150w wasnt advertised that much. The higher power ones where usually in the Clevo laptops with thicker case laptops.
Posted on Reply
#31
Chrispy_
THANATOSAs far as I know mobile 3080 will be based on GA104 instead of GA102.
No need to speculate; Raevenlord said it's GA104 right in the news post.
Posted on Reply
#32
yotano211
Chrispy_No need to speculate; Raevenlord said it's GA104 right in the news post.
Is that the person who calls himself/herself a TPU editor. He only cuts and paste from other news sources without posting any link to the story.
Posted on Reply
#33
Sunny and 75
RaevenlordRTX 3080 mobile: Max-Q (TGP 80-90 W), Max-P (TGP 115-150 W), with either 8 GB or 16 GB of GDDR6 memory.
16 GB finally. Took them long enough but better late than never I guess.
Posted on Reply
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