May 16, 2022

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Nvidia RTX 40 video cards have much more L2 cache on board

Nvidia RTX 40 video cards have much more L2 cache on board

The hacked Nvidia data appears to contain a great deal of information about the next generation of video cards, which is expected to be called Ada (Lovelace). For example, earlier today we wrote about the number of SMS and cuda kernels associated with this. It now appears that RTX 4000 cards will also have a large amount of L2 cache on board.

For example, Twitterer XinoAssassin with a screenshot of Nvidia’s alleged code shows Ada GPUs serving 16MB of L2 cache per 64-bit memory bus, compared to 512KB per 32-bit in the Ampere case. Memory buses for various AD GPUs have also been leaked, allowing the calculation of the amount of L2 cache.

Ada Lovelace (‘RTX 4000)
GPU Cuda nuclei bus L2- Cache
M 102 18,432 384 bit 96 MB
M 103 10,752 256 bit 64 MB
M 104 7.680 192 bit 48 megabytes
M 106 4.608 128 bit 32 MB
M 107 3.072 128 bit 32 MB
Ampere (RTX 3000)
GPU Cuda nuclei bus L2- Cache
GA102 10,752 384 bit 6 megabytes
GA103 7.680 256 bit 4 megabytes
GA104 6.144 256 bit 4 megabytes
GA106 3.840 192 bit 3 megabytes
GA107 2560 128 bit 2 megabytes

Key specifications of Ada and Ampere.

The AD102 flagship model is said to have 96MB of L2 cache, which is 16 times more than the 6MB of Ampere’s flagship model GA102. The AD106 and AD107 bottom chipset will also provide a much larger L2 cache than the Ampere at 32MB. How Nvidia realizes this leap is not clear, but technology like AMD’s Infinity Cache is likely to be used. Combined with a greater amount of cuda cores, it appears that Ada at least offers a solid performance compared to its predecessor.

Zeno Killer (Twitter)video cardKopite7kimi (Twitter)

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