AMD just released its latest flagship desktop graphics cards, the Radeon RX 7900 XTX and RX 7900 XT.

The new AMD Radeon RX 7900 XTX and 7900 XT are based on the new RDNA 3 architecture. But more impressively, these new cards are the first in the world to use a chiplet-based design.

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Their GPU die consists of two main parts: the Graphics Compute Die (GCD) and the Memory Cache Die (MCD). The former was built on a 5nm manufacturing process while the latter has the older 6nm.

So why go with chiplet design? AMD said that it allowed them to mix and match parts for carrying configurations. Plus, giving them the ability to put different manufacturing processes for every component. Having smaller parts also makes for better yields for cheaper and more efficient manufacturing.

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The said GCD has 1.5x VGPR (Vector General Purpose Register) for each compute unit, 64 dual issue stream processors with 2x instruction issue rate, dual AI accelerators with 2.7x performance, and the new 2nd-gen ray-tracing accelerator with 50% better performance per compute units.

Meanwhile, the new MCD uses a 64-bit memory controller and 2nd-gen Infinity Cache that can do 2.7x peak memory bandwidth.

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Now for their differences. The Radeon RX 7900 XTX boasts 96 compute units, 2.3GHz clock speeds on games, 96MB Infinity Cache, a whopping 24GB of GDDR6 384-bit memory, and 355W power via two 8-pin connectors.

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The cheaper of the two, the RX 7900 XT, has 84 compute units, 2GHz clock speeds, 20GB GDDR6 RAM, 320-bit memory, 80MB Infinity Cache, and a 300W power limit.

Related

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Both GPUs have support for DisplayPort 2.1 at UHBR 13.5 bandwidth of 54GBps.

The AMD Radeon RX 7900 XTX has a price of USD999 (around Php58,400) while the RX 7900 XT comes in at USD899 (around Php52,600). They will be available starting December 13.



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  1. By the way, don’t you think there’s a surprisingly small difference of only $100 between the XTX and XT, for a performance difference that will almost certainly be larger, probably in the 20-25% range (just my guess)?