Nvidia RTX 40, the first information leaked: GDDR7 memories and up to 600W

Nvidia RTX 40, the first information leaked: GDDR7 memories and up to 600W

Nvidia RTX 40, the first information leaked

YouTube channel Moore's Law Is Dead (MLID) has released a video in which it reveals a lot of information regarding the new series of Nvidia GeForce RTX 4000 "Ada Lovelace" video cards. The amount of information released includes many details such as the possible launch window and the performance that the new GPUs will have.

According to leaked data the AD102 GPU (RTX 4090) should have a power between 500 and 600 W. Nvidia is also working on developing a new PCIe Gen 5 connector that can deliver up to 600W of input power. The new RTX 3090 Ti should also use this interface, so it is very likely that the RTX 4000 series will also adopt this new PCIe standard.

MLID also reports that the new range of Nvidia cards could make use of GDDR7 memory, but it is not clear whether these memories will be used immediately or only in a future update applied to the subsequent cards, such as the RTX 40 Super.

GDDR7 memories should offer speeds up to 32 Gbps and yes speaks of 1 TB / s of bandwidth on a 256-bit bus interface, which becomes 1.5 TB / s with a 384-bit bus and 2 TB / s on a 512-bit bus.

The AD103 GPU, on the other hand, will have 84 SMs about 40% more than the RTX 3080 while the AD104, 106 and 107 GPUs will have 60, 36 and 24 SM respectively, all with an increase between 20 and 25% compared to the 3000 series. A further improvement concerns the L2 cache memories, with 96 MB available for the AD102 GPU which becomes 64 MB on the AD103 GPU and 48 MB on the AD104. The AD106 and 107 GPUs will both have 32 MB of L2 cache.

These are obviously rumors that if confirmed would mean a truly significant increase in performance compared to the 3000 series. More precise and above all official information should arrive in the course of 2022 .

Nvidia RTX 4090 could be twice as powerful as the RTX 3090

Nvidia was recently hacked, and as a result, plenty of inside information has surfaced. A lot of the leaks are related to the upcoming next-generation RTX 4000 graphics cards, and today’s leaks point to a massive performance jump from the RTX 3000 family of GPUs — and when we say massive, we really do mean massive, in the ballpark of twice as powerful as the graphics cards we’re using today.

This performance boost, if proven to be true, will stem from huge hardware upgrades. According to the leaks, the flagship Ada GPU may have up to 75% more cores than the RTX 3090, and the entire lineup will have a massive L2 cache.

J'ai fait un petit graphique pic.twitter.com/zilwXgi0va

— La Frite David ๐Ÿ‡ซ๐Ÿ‡ท (@davideneco25320) March 1, 2022

There’s a lot to unpack in today’s round of leaks, so let’s start with the basics — Nvidia RTX 4000-series is looking at some huge performance jumps compared to the graphics cards we’re using today. Improvements are to be expected going from one gen to the next, but there’s a possibility of reaching previously unheard-of levels of performance, especially with the top Nvidia Ada Lovelace GPUs.

Perhaps the most important rumor stems from the chip used in the Ada GPUs. Purportedly, Nvidia is switching from Samsung to TSMC for its new process nodes and will utilize the latest N5 5nm node. This should translate to an improvement in both efficiency and performance.

Ada will have huge L2 @VideoCardz pic.twitter.com/sjMGXttX0Y

— XinoAssassin (@xinoassassin1) March 2, 2022

The leaked Nvidia files revealed the company’s naming convention for the upcoming GPUs, keeping the current Ampere nomenclature much the same. The flagship GPU will be called AD102 and will be found inside the top-tier graphics cards, probably named RTX 4090. It will be followed by AD103 as the next-best pick, AD104-106 as the mid-range options, and AD107 for the budget segment, likely the equivalent of the current-gen RTX 3050. Nvidia seems to be sticking to Ada for the codename of the new GPU family.

According to davidneco25320 on Twitter, a large leap is expected in terms of the number of streaming processors (SMs) found in Ada GPUs. The leaker shared a full list of GPU dies and their expected SM count. The flagship AD102 is said to feature up to 144 SMs in a single die, which is a massive increase over the current RTX 3090 flagship, which has 84 SMs. As Tom’s Hardware reports, this is a 71% increase between the RTX 3090 and the RTX 4090, potentially leading to huge performance gains. This also implies similar gains to GPU cores, ray-tracing cores, and other elements.

Tom’s Hardware also speculates that we may be seeing a huge upgrade in CUDA cores. Nvidia’s RTX 3090 currently has 10,752 CUDA cores, which is already enormous, but Ada’s top GPU could bring that number up to 18,432. There has been no information about the core count on the lower-tier Ada GPUs, but the list reveals that the AD103 will have 84 SMs, a 40% increase from the current-gen equivalent. Nvidia is also rumored to go up a generation in terms of tensor cores and ray-tracing cores, switching from 3rd and 2nd gen to 4th and 3rd respectively.

List of Nvidia Ada Lovelace cards.Image source: VideoCardz

VideoCardz has also shared some fascinating leaks about the GPUs, all coming from Twitter users harukaze5719, kopite7kimi, and xinoassassin1. According to these leaks, the Nvidia RTX 4000-series GPUs will have a huge L2 cache, much larger than the one found in the current generation.The Ampere cards that currently top the list of the best GPUs for Nvidia feature 512KB of cache per 32-bit memory bus. However, the new data confirm that Ada GPUs will have 16MB of cache per 64-bit memory bus, adding up to 96MB of L2 cache in the top graphics card.

The leaks come from various Twitter sources, and some of these users are known for accurate hardware leaks. However, we can’t confirm the validity of these claims until Nvidia itself talks about the Ada GPU architecture, so take it with a healthy dose of skepticism. On the other hand, given the number of different voices that all claim various huge improvements in the RTX 4000 lineup, it’s becoming clear that we’re looking at a huge performance boost compared to current-gen cards.

Whether every single piece of information shared by the leakers is correct or not is irrelevant at this point — it’s pretty safe to assume that the generational gap between the RTX 3000 and the RTX 4000 GPUs will be large. Of course, this will vary based on the model, and we won’t really know more for a while yet.

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