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AMD's Radeon RX 6600 XT Will Land With Just 32MB of Infinity Cache

RX 6700 XT
(Image credit: AMD)

AMD (via Kepler_L2) released a new Linux patch that exposes the cache configuration for its Navi 21, Navi 22 and Navi 23 silicon. The last is rumored to power the chipmaker's upcoming Radeon RX 6600 series (or maybe RX 6500 series).

The description for the patch reads: "The L1 cache information has been updated and the L2/L3 information has been added. The changes have been made for Vega10 and newer ASICs. There are no changes for the older ASICs before Vega10." Therefore, it holds a ton of valuable information on both existing and future AMD products.

Introduced with RDNA 2, Infinity Cache basically acts as a big L3 cache that's accessible by the GPU. It's there to help improve performance since AMD's RDNA 2 graphics cards employ relatively narrow memory interfaces. The Radeon RX 6800 XT for example uses a 256-bit bus, but manages to mostly keep pace with the GeForce RTX 3080's 320-bit bus that also includes higher clocked GDDR6X memory.

Navi 21 (Sienna Cichlid) and Navi 22 (Navy Flounder) sport 128MB and 96MB of Infinity Cache, respectively. According to the new information, Navi 23 will wield 32MB of Infinity Cache. In comparison to Navi 22, we're looking at a 66.7% reduction on Navi 23. That should also help cut down the die size, though at the cost of performance.

AMD Navi 23 (Image credit: Freedesktop)

The jury is still out on whether AMD will use Navi 23 for the Radeon RX 6600 series, though. Some think that Navi 23 could find its way into the Radeon RX 6500 series instead. Regardless, AIDA64, a popular monitoring and diagnostics tool, recently received support for Radeon RX 6600 series. Assuming that the software's release notes are accurate, the Radeon RX 6600 XT and RX 6600 will indeed be based around the Navi 23 die.

ASRock registered a couple of Radeon RX 6600 XT models with the Eurasian Economic Commission (EEC) not so long ago. It's important to highlight that not every product makes it to the market, but if what ASRock submitted is true, the Radeon RX 6600 XT may feature 12GB of GDDR6 memory. Realistically, it makes more sense for the Radeon RX 6600 XT to have 8GB of GDDR6 memory across a 128-bit memory interface.

The fact that AIDA64 already supports the Radeon RX 6600 series hints that a potential launch may not be too far around the corner. We're still waiting for a trimmed down Radeon RX 6700 using Navi 22, which we expect to see some time in April.

  • husker
    But it will unfortunately take infinite cash to buy it as well.
    Reply
  • spongiemaster
    AMD still make video cards?
    Reply
  • InvalidError
    spongiemaster said:
    AMD still make video cards?
    Yes, they just need to finish raising ETH difficulty under the guise of factory QA burn-in testing before selling them as new :)
    Reply
  • cryoburner
    I like how the article's title definitively announces "AMD's Radeon RX 6600 XT Will Land With Just 32MB of Infinity Cache" before admitting in the actual article that this could very well be the chip used for the 6500 cards instead. >_>

    spongiemaster said:
    AMD still make video cards?
    Does Nvidia? Last I checked, neither are available in the usual stores, or at anywhere near their MSRPs. I haven't bothered caring much about recent GPU releases, seeing as they are all terrible options for the money compared to what was available some months ago.

    InvalidError said:
    Yes, they just need to finish raising ETH difficulty under the guise of factory QA burn-in testing before selling them as new :)
    That's actually a good point. What's keeping the manufacturers from doing that to make some extra profit on the side? Aside from someone inevitably leaking details about it, of course. : P
    Reply
  • spongiemaster
    cryoburner said:
    Does Nvidia? Last I checked, neither are available in the usual stores, or at anywhere near their MSRPs. I haven't bothered caring much about recent GPU releases, seeing as they are all terrible options for the money compared to what was available some months ago.
    I own a 3070 and a 3090. Both purchased at MSRP, before discounts were applied. So, yes Nvidia is selling video cards. If you keep track of Newegg shuffles that happen multiple times a week, the gpus that are offered are overwhelming Nvidia based.
    Reply