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AMD Radeon RX 6600 XT and RX 6600 Specs Appear in GPU-Z Screenshots

Specifications of AMD's upcoming mid-range Radeon RX 6600 XT and Radeon RX 6600 recently surfaced, and now we see screenshots of TechPowerUp GPU-Z confirming the two. The RX 6700 XT is shown featuring 2,048 stream processors, 128 TMUs, 32 ROPs, and a 128-bit wide GDDR6 memory interface with 8 GB of memory. The RX 6600 (non-XT), on the other hand, is shown featuring 1,792 stream processors, 112 TMUs, 32 ROPs, and the same 8 GB of GDDR6 memory. Both chips feature PCI-Express Gen 4 support, but much like the RX 5500 XT, the "Navi 23" only has 8 PCIe lanes. GPU-Z also seems to detect raytracing.

AMD Radeon RX 6600 XT, 6600 to Feature Navi 23 Chip With up to 2048 Stream Processors

AMD is preparing to round-out its RX 6000 series lineup with the upcoming RX 6600 XT and RX 6600, introducing true midrange GPUs to their latest generation RDNA2 architecture. According to recent leaks, both graphics cards should feature AMD's Navi 23 chip, another full chip design, instead of making do with a cut-down Navi 22 (even though that chip still only powers one graphics card in the AMD lineup, the RX 6700 XT).

According to the leak, the RX 6600 XT should feature 2048 stream processors and 8 GB of GDDR6 memory over a 128-bit memory bus. The RX 6600, on the other hand, is said to feature a cut-down Navi 23, with only 1796 stream processors enabled out of the original silicon design, whilst offering the same 8 GB GDDR6 over a 128-bit memory bus. There are even some benchmark scores to go with these leaks: supposedly, the RX 6600 XT scores 9,439 points in 3DMark Time Spy (Graphics), while the RX 6600 card scores 7,805 points. Those scores place these cards in the same ballpark as the RDNA-based RX 5700 XT and RX 5700. It's expected that these cards feature a further cut-down 32 MB of Infinity cache - half that of the RX 6700 XT's 64 MB. With die-size being an estimated 236 mm², AMD is essentially introducing the same performance with 15 mm² less area, whilst shaving some 45 W from that cards' TDP (225 W for the RX 5700 XT, and an estimated 180 W for the RX 6600 XT).

AMD Radeon RX 6600 XT and RX 6600 Surface in Regulatory Filing

Even as the desktop Radeon RX 6700 (non-XT) is nowhere in sight, AMD is planning to scale its RDNA2 graphics architecture further down, with the RX 6600 XT and RX 6600. Regulatory filings by board partner ASRock with the Eurasian Economic Commission (EEC), for the unreleased RX 6600 XT and RX 6600, hit the web, courtesy Komachi Ensaka. The filings list out internal SKU numbers. An interesting thing to note here is that both the RX 6600 XT and RX 6600 could have 8 GB of memory as standard. Given that the RX 6700 series is already pulling up to 12 GB over a 192-bit wide memory bus, it's likely that the RX 6600 series could use a narrower 128-bit bus for its 8 GB, use the fastest 16 Gbps memory chips (at least on the XT variant), and attempt to shore up memory bandwidth using Infinity Cache. A market launch typically follows EEC filings by 3 months, so the RX 6600 series could see a late-Summer launch.
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Jul 6th, 2025 17:54 CDT change timezone

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