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Nvidia RTX 3000 Series/Ampere Discussion Megathread
It's time to find out what Nvidia has to show us for RTX 3000/Ampere. RTX 30-Series GPUs announced (3070, 3080, 3090)
LINK TO KEYNOTE: https://nvda.ws/32MTnHB
|Model ||CUDA Cores ||Boost ||Tensor Cores ||TGP* ||Bus ||Memory ||Price ||Release date |
|GeForce RTX 3090 ||10496 ||1700 MHz ||328 ||350W ||384bit ||24GB GDDR6X ||$1499 USD ||24 September |
|GeForce RTX 3080 ||8704 ||1710 MHz ||272 ||320W ||320bit ||10GB GDDR6X ||$699 USD ||17 September |
|GeForce RTX 3070 ||5888 ||1730 MHz ||184 ||220W ||256bit ||8GB GDDR6 ||$499 USD ||October |
|GeForce RTX 2080Ti ||4352 ||1635 MHz (FE OC) ||272 ||250W ||352bit ||11GB GDDR6 || || |
*TGP is a measure of maximum power draw over time for the entire graphics card. It does not represent the maximum peak power draw. Performance wise, Nvidia claims that:
RTX 3090 is up to 1.5x faster than the TITAN RTX (similar to RTX 2080 Ti), and a Titan level card.
RTX 3080 is up to 2x faster than RTX 2080 and is the flagship Ampere GPU, to be compared to 2080Ti, 2080 SUPER.
RTX 3070 is faster than the RTX 2080 Ti and 1.6x faster than the RTX 2070 The required PSU wattage:
3090 = 750W
3080 = 750W
3070 = 650W 12-pin
A 12-pin adaptor will be sent with all 30-series cards. In order to power on the GPU correctly, Nvidia says you need to make sure to use two separate cables from the PSU and NOT a splitter. Reference here: https://imgur.com/a/qNqXga8
Nvidia says: "For power connector adapters, Nvidia recommends you use the 12-pin dongle that already comes with the RTX 3080 GPU. However, there will also be excellent modular power cables that connect directly to the system power supply available from other vendors, including Corsair, EVGA, Seasonic, and CableMod. Please contact them for pricing and additional product details."
GeForce RTX 3080 Founders Edition reviews (and all related technologies and games) will be on September 16th at 6 a.m. Pacific Time. Other info from the keynote:
|Card ||Price ||Release Date |
|3070 ||$499 ||15 October |
|3080 ||$699 ||17 September |
|3090 ||$1499 ||24 September |
NVIDIA Reflex Optimize and Measure Latency in Competitive Games
NVIDIA Broadcast AI-Powered NVIDIA Broadcast App Noise Removal: remove background noise from microphone feed. AI network can be used on incoming audio feeds. Virtual Background: remove the background of your webcam feed and replace it with game footage, a replacement image, or blur. Auto Frame: Tracking head movements.
RTX IO GPU-Accelerated Storage Technology
Fortnite with RTX
Watch Dogs Legion
8K HDR Gaming
NVIDIA G-Sync 360 Hz Monitors
More info, and keynote presentations and announcements:
There are no preorders for the Founders edition cards.
Nvidia GeForce RTX 3080 Early Look: Ampere Architecture Performance - Hands-On! - Digital Foundry
NVIDIA RTX 3090, 3080, 3070 Founders edition first look - PCMR YT
NVIDIA. AMPERE. WOW. - Greg Salazar
NVIDIA just made EVERYTHING ELSE obsolete - Linus Tech Tips
NVIDIA RTX 3090, 3080, 3070 Specs, Cooler, Price, & Release Date - GamersNexus
Was the 3070, 3080 or 3090 worth the wait?? - JayZTwoCent
NVIDIA Ampere GeForce RTX 3090, RTX 3080 And 3070 Debut With Killer Gaming Performance
Q&A Nvidia ran Q&A thread on their subreddit: https://www.reddit.com/nvidia/comments/iko4u7/geforce_rtx_30series_community_qa_submit_you
Here is their collected assembly of questions from the users and replies from the engineers and PMs:
Why only 10 GB of memory for RTX 3080? How was that determined to be a sufficient number, when it is stagnant from the previous generation?
[Justin Walker] We’re constantly analyzing memory requirements of the latest games and regularly review with game developers to understand their memory needs for current and upcoming games. The goal of 3080 is to give you great performance at up to 4k resolution with all the settings maxed out at the best possible price. When the slide says RTX 3070 is equal or faster than 2080 Ti, are we talking about traditional rasterization or DLSS/RT workloads? Very important if you could clear it up, since no traditional rasterization benchmarks were shown, only RT/DLSS supporting games.
In order to do this, you need a very powerful GPU with high speed memory and enough memory to meet the needs of the games. A few examples - if you look at Shadow of the Tomb Raider, Assassin’s Creed Odyssey, Metro Exodus, Wolfenstein Youngblood, Gears of War 5, Borderlands 3 and Red Dead Redemption 2 running on a 3080 at 4k with Max settings (including any applicable high res texture packs) and RTX On, when the game supports it, you get in the range of 60-100fps and use anywhere from 4GB to 6GB of memory.
Extra memory is always nice to have but it would increase the price of the graphics card, so we need to find the right balance.
[Justin Walker] *We are talking about both. Games that only support traditional rasterization and games that support RTX (RT+DLSS). Does Ampere support HDMI 2.1 with the full 48Gbps bandwidth?
[Qi Lin] Yes. The NVIDIA Ampere Architecture supports the highest HDMI 2.1 link rate of 12Gbs/lane across all 4 lanes, and supports Display Stream Compression (DSC) to be able to power up to 8K, 60Hz in HDR. Could you elaborate a little on this doubling of CUDA cores? How does it affect the general architectures of the GPCs? How much of a challenge is it to keep all those FP32 units fed? What was done to ensure high occupancy?
[Tony Tamasi] One of the key design goals for the Ampere 30-series SM was to achieve twice the throughput for FP32 operations compared to the Turing SM. To accomplish this goal, the Ampere SM includes new datapath designs for FP32 and INT32 operations. One datapath in each partition consists of 16 FP32 CUDA Cores capable of executing 16 FP32 operations per clock. Another datapath consists of both 16 FP32 CUDA Cores and 16 INT32 Cores. As a result of this new design, each Ampere SM partition is capable of executing either 32 FP32 operations per clock, or 16 FP32 and 16 INT32 operations per clock. All four SM partitions combined can execute 128 FP32 operations per clock, which is double the FP32 rate of the Turing SM, or 64 FP32 and 64 INT32 operations per clock. Any idea if the dual airflow design is going to be messed up for inverted cases? More than previous designs? Seems like it would blow it down on the cpu. But the CPU cooler would still blow it out the case. Maybe it’s not so bad.
Doubling the processing speed for FP32 improves performance for a number of common graphics and compute operations and algorithms. Modern shader workloads typically have a mixture of FP32 arithmetic instructions such as FFMA, floating point additions (FADD), or floating point multiplications (FMUL), combined with simpler instructions such as integer adds for addressing and fetching data, floating point compare, or min/max for processing results, etc. Performance gains will vary at the shader and application level depending on the mix of instructions. Ray tracing denoising shaders are good examples that might benefit greatly from doubling FP32 throughput.
Doubling math throughput required doubling the data paths supporting it, which is why the Ampere SM also doubled the shared memory and L1 cache performance for the SM. (128 bytes/clock per Ampere SM versus 64 bytes/clock in Turing). Total L1 bandwidth for GeForce RTX 3080 is 219 GB/sec versus 116 GB/sec for GeForce RTX 2080 Super.
Like prior NVIDIA GPUs, Ampere is composed of Graphics Processing Clusters (GPCs), Texture Processing Clusters (TPCs), Streaming Multiprocessors (SMs), Raster Operators (ROPS), and memory controllers.
The GPC is the dominant high-level hardware block with all of the key graphics processing units residing inside the GPC. Each GPC includes a dedicated Raster Engine, and now also includes two ROP partitions (each partition containing eight ROP units), which is a new feature for NVIDIA Ampere Architecture GA10x GPUs. More details on the NVIDIA Ampere architecture can be found in NVIDIA’s Ampere Architecture White Paper, which will be published in the coming days.
Second question. 10x quieter than the Titan for the 3090 is more or less quieter than a 2080 Super (Evga ultra fx for example)?
[Qi Lin] The new flow through cooling design will work great as long as chassis fans are configured to bring fresh air to the GPU, and then move the air that flows through the GPU out of the chassis. It does not matter if the chassis is inverted. Will the 30 series cards be supporting 10bit 444 120fps ? Traditionally Nvidia consumer cards have only supported 8bit or 12bit output, and don’t do 10bit. The vast majority of hdr monitors/TVs on the market are 10bit.
The Founders Edition RTX 3090 is quieter than both the Titan RTX and the Founders Edition RTX 2080 Super. We haven’t tested it against specific partner designs, but I think you’ll be impressed with what you hear… or rather, don’t hear. :-)
[Qi Lin] The 30 series supports 10bit HDR. In fact, HDMI 2.1 can support up to [email protected] with 12bit HDR, and that covers 10bit HDR displays. What breakthrough in tech let you guys massively jump to the 3xxx line from the 2xxx line? I knew it would be scary, but it's insane to think about how much more efficient and powerful these cards are. Can these cards handle 4k 144hz?
[Justin Walker] There were major breakthroughs in GPU architecture, process technology and memory technology to name just a few. An RTX 3080 is powerful enough to run certain games maxed out at 4k 144fps - Doom Eternal, Forza 4, Wolfenstein Youngblood to name a few. But others - Red Dead Redemption 2, Control, Borderlands 3 for example are closer to 4k 60fps with maxed out settings. Will customers find a performance degradation on PCIE 3.0?
System performance is impacted by many factors and the impact varies between applications. The impact is typically less than a few percent going from a x16 PCIE 4.0 to x16 PCIE 3.0. CPU selection often has a larger impact on performance.We look forward to new platforms that can fully take advantage of Gen4 capabilities for potential performance increases. RTX IO
Could we see RTX IO coming to machine learning libraries such as Pytorch? This would be great for performance in real-time applications
[Tony Tamasi] NVIDIA delivered high-speed I/O solutions for a variety of data analytics platforms roughly a year ago with NVIDIA GPU DirectStorage. It provides for high-speed I/O between the GPU and storage, specifically for AI and HPC type applications and workloads. For more information please check out: https://developer.nvidia.com/blog/gpudirect-storage/ Does RTX IO allow use of SSD space as VRAM? Or am I completely misunderstanding?
[Tony Tamasi] RTX IO allows reading data from SSD’s at much higher speed than traditional methods, and allows the data to be stored and read in a compressed format by the GPU, for decompression and use by the GPU. It does not allow the SSD to replace frame buffer memory, but it allows the data from the SSD to get to the GPU, and GPU memory much faster, with much less CPU overhead. Will there be a certain ssd speed requirement for RTX I/O?
[Tony Tamasi] There is no SSD speed requirement for RTX IO, but obviously, faster SSD’s such as the latest generation of Gen4 NVMe SSD’s will produce better results, meaning faster load times, and the ability for games to stream more data into the world dynamically. Some games may have minimum requirements for SSD performance in the future, but those would be determined by the game developers. RTX IO will accelerate SSD performance regardless of how fast it is, by reducing the CPU load required for I/O, and by enabling GPU-based decompression, allowing game assets to be stored in a compressed format and offloading potentially dozens of CPU cores from doing that work. Compression ratios are typically 2:1, so that would effectively amplify the read performance of any SSD by 2x. Will the new GPUs and RTX IO work on Windows 7/8.1?
[Tony Tamasi] RTX 30-series GPUs are supported on Windows 7 and Windows 10, RTX IO is supported on Windows 10. I am excited for the RTX I/O feature but I partially don't get how exactly it works? Let's say I have a NVMe SSD, a 3070 and the latest Nvidia drivers, do I just now have to wait for the windows update with the DirectStorage API to drop at some point next year and then I am done or is there more?
[Tony Tamasi] RTX IO and DirectStorage will require applications to support those features by incorporating the new API’s. Microsoft is targeting a developer preview of DirectStorage for Windows for game developers next year, and NVIDIA RTX gamers will be able to take advantage of RTX IO enhanced games as soon as they become available. RTX Broadcast
What is the scope of the "Nvidia Broadcast" program? Is it intended to replace current GFE/Shadowplay for local recordings too?
[Gerardo Delgado] NVIDIA Broadcast is a universal plugin app that enhances your microphone, speakers and camera with AI features such as noise reduction, virtual background, and auto frame. You basically select your devices as input, decide what AI effect to apply to them, and then NVIDIA Broadcast exposes virtual devices in your system that you can use with popular livestream, video chat, or video conference apps. Jason, Will there be any improvements to the RTX encoder in the Ampere series cards, similar to what we saw for the Turing Release? I did see info on the Broadcast software, but I'm thinking more along the lines of improvements in overall image quality at same bitrate.
NVIDIA Broadcast does not record or stream video and is not a replacement for GFE/Shadowplay
[Jason Paul] Hi Carmen813, for RTX 30 Series, we decided to focus improvements on the video decode side of things and added AV1 decode support. On the encode side, RTX 30 Series has the same great encoder as our RTX 20 Series GPU. We have also recently updated our NVIDIA Encoder SDK. In the coming months, livestream applications will be updating to this new version of the SDK, unlocking new performance options for streamers. I would like to know more about the new NVENC -- were there any upgrades made to this technology in the 30 series? It seems to be the future of streaming, and for many it's the reason to buy nvidia card rather than any other.
[Gerardo Delgado] The GeForce RTX 30 Series leverages the same great hardware encoder as the GeForce RTX 20 Series. We have also recently updated our Video Codec SDK to version 10.0. In the coming months, applications will be updating to this new version of the SDK, unlocking new performance options. Regarding AV1 decode, is that supported on 3xxx series cards other than the 3090? In fact can this question and dylan522p question on support level be merged into: What are the encode/decode features of Ampere and do these change based on which 3000 series card is bought?
[Gerardo Delgado] All of the GeForce RTX 30 Series GPUs that we announced today have the same encoding and decoding capabilities: NVIDIA Machinima
They all feature the 7th Gen NVIDIA Encoder (the one that we released with the RTX 20 Series), which will use our newly released Video Codec SDK 10.0. This new SDK will be integrated in the coming months by the live streaming apps, unlocking new presets with more performance options.
They all have the new 5th Gen NVIDIA Decoder, which enables AV1 hardware accelerated decode on GPU. AV1 consumes 50% less bandwidth and unlocks up to 8K HDR video playback without a big performance hit on your CPU.
How active is the developer support for Machinima? As it's cloud based, I'm assuming that the developers/publishers have to be involved for it to really take off (at least indirectly through modding community support or directly with asset access). Alongside this, what is the benefit of having it cloud based, short of purely desktop?
[Richard Kerris] We are actively working with game developers on support for Omniverse Machinima and will have more details to share along with public beta in October. NVIDIA Studio
Omniverse Machinima can be run locally on a GeForce RTX desktop PC or in the cloud. The benefit of running Omniverse from the cloud is easier real-time collaboration across users.
Content creator here. Will these cards be compatible with GPU renderers like Octane/Arnold/Redshift/etc from launch? I know with previous generations, a new CUDA version coincided with the launch and made the cards inert for rendering until the 3rd-party software patched it in, but I'm wondering if I will be able to use these on launch day using existing CUDA software.
[Stanley Tack] A CUDA update will be needed for some renderers. We have been working closely with the major creative apps on these updates and expect the majority (hopefully all!) to be ready on the day these cards hit the shelves. NVIDIA Reflex
Will Nvidia Reflex be a piece of hardware in new monitors or will it be a software that other nvidia gpus can use?
[Seth Schneider] NVIDIA Reflex is both. The NVIDIA Reflex Latency Analyzer is a revolutionary new addition to the G-SYNC Processor that enables end to end system latency measurement. Additionally, NVIDIA Reflex SDK is integrated into games and enables a Low Latency mode that can be used by GeForce GTX 900 GPUs and up to reduce system latency. Each of these features can be used independently.
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