The AMD Radeon RX 7900 XT graphics card will have 20 GB of GDDR6 memory

The AMD Radeon RX 7900 XT graphics card will have 20 GB of GDDR6 memory

In a few weeks, AMD will introduce its Radeon RX 7000 graphics cards equipped with the RDNA 3 GPU and we got some new information about one of the flagship models, the Radeon RX 7900 XT.

The RX 7900 XT comes with 20 GB of memory

AMD’s RDNA 3 GPU lineup will start with high-end offerings based on the MCM Navi 31 chip. This chip will be used in Radeon RX 7000 graphics cards, including the RX 7900 XT, about which we have received new information. According to the details, the AMD Radeon RX 7900 XT graphics card will not be the high-end model, but will feature 20GB of GDDR6 VRAM.

The source reports that AMD’s Radeon RX 7000 “RDNA 3” GPUs may exceed expectations. it seems that the end result could be a much better product than expected.

We also learned that the AMD Radeon RX 7900 XT originally had a memory capacity of 24GB before being downgraded to 20GB.

AMD seems very confident that with 20GB and a slightly downsized MCM chip they will be in a comfortable position against the RTX 4090 and might even outperform it in pure raster performance while offering a huge jump in RT performance compared to the RTX 4090. with existing RDNA 2 GPUs.

With the Radeon RX 7900 XT using 20 GB of memory, this would indicate that the rumors of a higher-end SKU appear to be true. AMD has already started using the *950 XT convention in its latest generation of RDNA 2 GPUs, so an RX 7950 XT is sure to be on the way.

Navi 31 chip for the RX 7900 XT

The AMD Navi 31 GPU, RDNA 3’s flagship chip, will power next-gen cards like the Radeon RX 7900 XT graphics card. We have heard that AMD will be ditching CUs (compute units) in favor of WGPs (workgroup processors) in its next generation RDNA 3 GPUs. Each WGP will host two CUs (compute units), but with double the number of SIMD32 clusters, compared to just two in each CU in RDNA 2. Rumors say AMD has a choice between Samsung and TSMC for the 6 array. m.

  • AMD Navi 31: 12288 cores, 384-bit bus, 192MB infinite cache, 308mm2 5nm GPU die.
  • AMD Navi 21: 5120 cores, 384-bit bus, 128MB Infinity Cache, 520mm2 7nm GPU

Based on the latest information, the AMD Navi 31 GPU with RDNA 3 architecture is expected to offer a single GCD with 48 WGP, 12 SA and 6 SE. This will give a total of 12,288 SP or Stream Processors. This represents a 2.4x increase in the core count of the Navi 21 GPU’s 5120 SP. The Navi 31 GCD or GPU would measure 308mm2 and be integrated into TSMC’s 5nm process node.

Infinity Cache and Navi 31

The Navi 31 GPU will also feature 6 MCDs with 16 MB of Infinity cache per chip, as well as 64-bit memory controllers (32-bit x 2) that will provide the chip with a 384-bit bus interface.

Although this equates to 96MB infinite cachewhich is less than the 128 MB of current Navi 21 GPUs, there is also a 3D stacked solution in development, which was recently reported and would double the Infinity Cache with capacities of 32 MB (16 MB 0-hi + 16 MB 1-hi) for a total of 192MB cache.

This is a 50% increase over the current Navi 21 design and also makes Navi 31 the first GPU with 3D stack and chiplet designs. These chiplets or MCDs will be manufactured in TSMC’s 6nm process node and will measure 37.5mm2 each.

AMD cuts the price of its GPUs at the right time to get ahead of Nvidia

Consumption increase

This will translate to higher power consumption and AMD seems to have confirmed that its next-gen lineup of graphics cards will have higher power consumption, but will still be a more efficient option than what NVIDIA offers. The AMD Radeon RX 6950 XT already has a TBP of 335 W for a >2x performance gain. The cards are expected to retain their dual 8-pin input for power and feature a new three-fan cooling design, slightly taller than the one currently in use.

#AMD #Radeon #graphics #card #GDDR6 #memory

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